Cat c15 coolant temp sensor location

4. Remove the Coolant Sensor. A coolant sensor will be held in place by one of two methods. The first is a typical threaded housing which you will be able to remove using a large 22mm or 24mm deep well socket or wrench. In the example below the sensor is being held in by a large C clip. Use a pick to pull the clip upward and away from the …

The coolant temperature sensor (CTS) on a 2015 Jeep Grand Cherokee 3.6 is located in the cylinder head, near the thermostat. The CTS measures the temperature of the coolant in the engine and sends this information to the engine control module (ECM). The ECM uses this information to control the cooling system and to prevent…learn more 217-5793: Switch-Water Temperature Cat® Water Temperature Switch (Engine Coolant) : Cat 217-5793: Switch-Water Temperature 439-0945: Gasket 249-5541: …Engine Coolant Temperature Sensor (234-5012) A-S3 G833 -A47 18 PK 1 2 Intake Manifold Air Temperature Sensor (234-5013) 1 2 Fuel Temperature Sensor (234-5013) Timing Calibration (TC) Probe Connector 1 2 Harness (243-2321 & 248-4233) Only 120 PIN ECM Connector 13 ENGINE COOLANT TEMPERATURE 30 TEMPERATURE SENSOR COMMON 56 INTAKE MANIFOLD AIR ... The coolant temperature sensor is located on the thermostat housing an all of these year models. It is very hard to see. You have to go in from the front of the …(09-30-2012, 05:32 AM) ashu01 Wrote: Hi All, I am going through a big trouble i did a head on one cat c 15 6NZ series after changing the head this engine work fine since it run without load as soon as it haule the load it buzzer and red temp sign come on at 185F.i have changed all the cooolent temp sensor installed new water pump cleand the radiator …1. Your check engine light is on: If the engine’s computer detects a problem with the coolant temperature sensor, or its circuit, it will turn on the check engine light. 2. Your engine stalls: When the engine is first started, it will require more fuel in order to idle smoothly until it’s warmed up. The signal from the coolant temperature ...

The correct Evans ResistorPac to raise the fan-on temperature to 2300F is part no. RPS-C12-CA2-1730. The ResistorPac is placed in series with the coolant temperature sensor, raising the fan-on and derating temperatures by making the ECM “think” the coolant temperature is cooler than it really is. Had my terminal manager pull up the reading from our elog system, it also reads the ecm. Ecm was showing the engine at 177° but gauge still under 150. Swapped the sensor on top of the thermostat housing which is supposed to be the peterbilt gauge sensor, still not reading above 150.Jan 31, 2009 · Cat coolant temp sensor.located on fron.t side of the thermastat housing.35 bucks or so for sensor.it could also be the high pressure ac fan switch.find high pressure ac fan switch bypass the switch.unplug and put paperclip inside.and drive around and see if problems continues.the coolant temp switch will show erratic voltage when you put it on the computer. Feb 20, 2011 · Subject: CATGUY - C15 problems. Northeast Nebraska. Catguy, we've got a 2005 379 Pete. Yesterday drove it 280 miles one way to pick up a sprayer. On the way there, empty, the water temp light came on randomly 3 times, and stayed on for various times, less than a minute each time it came on. The check engine light came on with the water temp ... Caterpillar Engine Expert. Vocational, Technical or Tra... 10,345 satisfied customers. An 2001 FL-70 with a 3126 w/ allison auto 643 trans..rpm..coolant temp. I have an 2001 FL-70 with a 3126 w/ allison auto 643 trans. and the fan engages and won't drop out properly. It usually comes on during or … read more.E. Remove the jumper wire. Connect the harness connector for the coolant level sensor. The voltage is within ±5 VDC of battery voltage: Result: The status changes from "LOW" to "OK" when the jumper wire is installed. The ECM and the wiring harness to the coolant level sensor are OK.Replace the coolant level sensor.

I have a mxs c15 acert catapillar engine and the oil temp gauge and the coolant gauge is fluctuating . one minute coolant and oil temp is at operating temps coolant 180 and oil temp 200-210. then they both fall to 150 or sometimes 100 2-5 minutes later its at normal temp or it will drop to 150 and so on.False readings. One way to know your oil temperature sensor is failing is if you get false readings due to the electrical signal output by the temperature sensor. These are indicated by the temperature gauge going from cool to hot in one minute. It takes a couple of minutes for the oil to heat up, so the temperature sensor should reflect that.Thanks for the help cat. I mention 30 seconds cause this troubleshooting guide I'm reading says 30 second cycle time over and over Troubleshooting 3114, 3116 and 3126 Engines Media Number -SENR6502-06 So, Yeah, according to this document the coolant temp, oil pressure switch, power relay, and control module are the factors to …CAT C15 MXS IVA warm-up control solenoid question Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by west_coaster, Mar 28, 2017. Page 1 ... 27 110-04 110-04 COOLANT TEMPERATURE SENSOR VOLTAGE LOW 28 91-13 91-13 ACCELERATOR PEDAL POSITION OUT OF CALIBRATION 29 30-08 644 ...On the Avengers, the engine is transverse (sideways) mounted placing the left head right in front. So the sensor will be all the way to the right and down a little on the head facing forward (towards you). Reply. Save. Darwinlop504 · #6 · Jul 31, 2018. Having trouble fininding this on my 2013 S/E. Reply. Save.Category: Medium and Heavy Trucks. 4,340. Experience: Repair CAT machines only. Hello, See item #2 in the attached image. Ask Your Own Medium and Heavy Trucks Question. Not the right engine my alternator is located on driver side. Technician: cat_engines_only. Ask Your Own Medium and Heavy Trucks Question.

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2. Coolant Temperature Sensor and/or the CircuitA. Check the reading of the coolant temperature on Cat ET. The temperature should rise steadily as the engine is warmed. Ensure that the temperature is reasonable. Coolant temperature sensor: Result: The temperature sensor is working properly.Proceed to Test Step 3. Result: The temperature sensor ...Frequently bought together. This item: ACDelco Professional 213-4514 Engine Coolant Temperature Sensor. $2084. +. ACDelco GM Original Equipment 213-354 Engine Crankshaft Position Sensor. $4736. Total price: Add both to Cart. One of these items ships sooner than the other.Jan 23, 2017 · kenworth 660 with an acert cat c15, has engine coolant and oil temp jump up intermintantly, followed by shutdown, engine does not have an actual oil temp sensor in it, the dash gauges are all multiple … read more 2. Coolant Temperature Sensor and/or the CircuitA. Check the reading of the coolant temperature on Cat ET. The temperature should rise steadily as the engine is warmed. Ensure that the temperature is reasonable. Coolant temperature sensor: Result: The temperature sensor is working properly.Proceed to Test Step 3. Result: The temperature sensor ...

2. For CAT C13 thermostat: Remove one of the two possible ¾-16” plugs located at the front of the thermostat housing behind the radiator fan (see Figure 1). 3. For CAT C15 thermostat: Remove one of the two possible ¾-16" plugs located at the top of the thermostat housing below the coolant inlet hose (see Figure 2). 4. Install thermostat ...9423 posts · Joined 2004. #4 · Jun 27, 2021. If I recall correctly, the 3 prong sensor is Engine Temperature and reflects on the Instrument Cluster. The 2 prong sensor turns on/off the electric fan in front of the Radiator. There are 50C and 70C metal temperature sensors under the Air Cleaner. 2.The boost pressure sensor in the Caterpillar C13 engine plays a significant role in monitoring the pressure of the intake air, especially in turbocharged engines. It helps regulate the air-fuel mixture and optimize engine performance. The boost pressure sensor is commonly located on the intake manifold or near the turbocharger.9423 posts · Joined 2004. #4 · Jun 27, 2021. If I recall correctly, the 3 prong sensor is Engine Temperature and reflects on the Instrument Cluster. The 2 prong sensor turns on/off the electric fan in front of the Radiator. There are 50C and 70C metal temperature sensors under the Air Cleaner. 2.Cat C15 Coolant Temp Sensor Location. The Cat C15 engines coolant temperature sensor is located in the cylinder head, near the thermostat housing. It is typically mounted on the rear of the cylinder head just beneath the exhaust manifold. This sensor monitors the temperature of the coolant as it flows through the engine, and …361-6576: Coolant Temperature-Sensor Group. 153-6412: Washer. 249-5541: Regulator-Temperature. 439-0945: Gasket. Description: Cat low temperature sensors use thermocouples and thermistors to sense temperature. Low temperature sensors are available as passive resistive output, thermocouple output or active PWM and analog outputs. Oct 20, 2009 · C15 (6nz/9nz) fan will cutting at 105c for water temp. If you need more info just reply. I dont have my info at home but can look most stuff up as I fix C15 in OZ for a job. Temperature range is typically (87 to 98 degrees C) 189 to 208 degrees F. Maximum allowable temperature is 216 degrees F. High Engine Coolant Temperature High - Moderate Severity (2) The engine coolant temperature has exceeded the trip point and the delay time has expired. The code is logged. E361(3) 110-0: Engine Coolant Temperature High - Most Severe (3) The engine coolant temperature has exceeded the trip point and the delay time has expired. Engine power ...361-6576: Coolant Temperature-Sensor Group. 153-6412: Washer. 249-5541: Regulator-Temperature. 439-0945: Gasket. Description: Cat low temperature sensors use thermocouples and thermistors to sense temperature. Low temperature sensors are available as passive resistive output, thermocouple output or active PWM and analog outputs.Where is the coolant temperature sensor located on a '96 4.3L? I checked AutoZone's diagram, and I'm not exactly sure what I'm looking at there ... Tuner Cat Speed Density tune, Vac modulated trans with shift kit and vette servo, Bolt on's Camshaft Tutorial-----My Truck and The Roots Blower Project----- My Tuning Tutorial. Save ...Jun 20, 2023 · The 6.7 Cummins Temp Sensor is located in the engine block of a Dodge Ram 2500 or 3500 truck. It is typically near the rear of the block, and will be mounted on an aluminum plate with two screws holding it in place. The sensor should have three wires coming from it: one red wire for power, one black wire for ground, and one yellow wire to send ... Caterpillar Machin Operator

The most common reason for a coolant temperature gauge not working is a problem with the coolant temperature sensor. Signs of a bad sensor include black smoke in the exhaust, a car using more gas than usual or a car overheating frequently.

27 110-03 110-03 coolant temperature sensor voltage high 27 110-04 110-04 coolant temperature sensor voltage low 28 91-13 91-13 accelerator pedal position out of calibration 29 30-08 644-08 pto throttle signal invalid 29 30-13 644-13 pto throttle signal calibrationDescription: Cat temperature sensors use thermocouples or thermistors to sense the temperature of oil, water, or air. Attributes: Coolant temperature sensors keep Cat …Had my terminal manager pull up the reading from our elog system, it also reads the ecm. Ecm was showing the engine at 177° but gauge still under 150. Swapped …learn more 217-5793: Switch-Water Temperature Cat® Water Temperature Switch (Engine Coolant) : Cat 217-5793: Switch-Water Temperature 439-0945: Gasket 249-5541: …Dec 26, 2011 · manasteel. 152 posts · Joined 2011. #9 · Dec 29, 2011. c15 has it. intake temp way to often over looked. fan a/c hi pressure. coolant temp. this is what turns the fan on. is the fan solinoid working? is the plug loose at the solinoid? makes it sound like the fan runs all the time? do you need power to turn the fan off or need power to turn ... Jun 16, 2023 · New Pressure Sensor 5PP4-3 fits for CAT Caterpillar C7 C9 C12 C13 C15 248-2169. $17.96. Free shipping. Check the item description to confirm this fits your vehicle. Hover to zoom. A coolant temperature sensor is located at the engine block’s front. Although the location may vary in cars that feature pulleys on their sides, the coolant temperature sensor is typically located in the pulley system of the car.

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High water temps and put a fuel temp wire on it and it would go up to 230°F in a pull quite quick. Fuel temp wire made the problem much more noticable! E model Cat man , Jul 6, 2016Oct 25, 2013 · ynot · #5 · Oct 27, 2013. Sendors are supposed to be based on averages. Thats why you wont find either in the oil cooler, water in the port next to the liner, temp switch in the pan but overheat switch in the gallery, yada yada. Interesting enuf, 90% of all manufacturers put the coolant behind the thermostats, and oil in the pan. Engine Coolant Temperature Sensor (234-5012) A-S3 G833 -A47 18 PK 1 2 Intake Manifold Air Temperature Sensor (234-5013) 1 2 Fuel Temperature Sensor (234-5013) Timing Calibration (TC) Probe Connector 1 2 Harness (243-2321 & 248-4233) Only 120 PIN ECM Connector 13 ENGINE COOLANT TEMPERATURE 30 TEMPERATURE SENSOR COMMON 56 INTAKE MANIFOLD AIR ... Select delivery location. Only 4 left in stock - order soon . ... 2566453 | Coolant Temperature Sensor for Cat Caterpillar 3406E 3516B C18 C15 (INTERSTATE-McBEE)Oct 14, 2020SPN: 110. FMI: 3/3. Lamp: AMBER. SRT: REASON: Engine Coolant Temperature 1 Sensor Circuit - Voltage Above Normal or Shorted to High Source. High signal voltage or open circuit detected at engine coolant temperature circuit. EFFECT: Possible white smoke. Fan will stay ON if controlled by ECM. No engine protection for …Nov 5, 2015 · The engine info should be on a decal on the valve cover ( serial # , designation) The coolant temp sensor should not be the control for the intake heater ; there is a sensor for intake air temp, as in the pages 13-5>6 of this document. If the decal is missing , Freightliner can provide the serial number. learn more 217-5793: Switch-Water Temperature Cat® Water Temperature Switch (Engine Coolant) : Cat 217-5793: Switch-Water Temperature 439-0945: Gasket 249-5541: …Caterpillar Engine Expert. Vocational, Technical or Tra... 10,345 satisfied customers. An 2001 FL-70 with a 3126 w/ allison auto 643 trans..rpm..coolant temp. I have an 2001 FL-70 with a 3126 w/ allison auto 643 trans. and the fan engages and won't drop out properly. It usually comes on during or … read more.View with engine cover installed. 2007 Chrysler 300C 5.7L HEMI V8. Camshaft position sensors (CMP) (located at the front of each cylinder head) Knock sensors (KS) (rear of engine under exhaust manifolds) Crankshaft position sensor (CKP) (located at the pass side rear of engine by the transmission) Engine coolant temperature sensor (ECT ...Location for the oil temperature sensor on the caterpillar C15 ENGINE. Engine #NXS29786. ... Location for the oil temperature sensor on the caterpillar C15 ENGINE. ... 2005 Peterbilt 379 c15 acert cooling fan comes on at the correct temp. but noticed it will not stay on long enough to bring temp. down. shuts off fan prematurely. ...Dec 26, 2011 · manasteel. 152 posts · Joined 2011. #9 · Dec 29, 2011. c15 has it. intake temp way to often over looked. fan a/c hi pressure. coolant temp. this is what turns the fan on. is the fan solinoid working? is the plug loose at the solinoid? makes it sound like the fan runs all the time? do you need power to turn the fan off or need power to turn ... ….

Ask your own question now. Technician: Cat Man. Ask Your Own Medium and Heavy Trucks Question. OK then but there is 2 sensors in that same area. Technician: Cat Man. The coolant temp sensor for the engine ECM has three wires and reports to the ECM. The other sensor reports to the gauge on the dash. Ask Your Own Medium and Heavy …6nz catepillar where dies ecm read water temperature from what sensor readings are changing in cat et ... The ECM has a coolant temp sensor located in the front of the ... CATMAN PLEASE 2006 Pete CAT C15 ACERT the coolant temp gauge is acting up. seems like when the fan kicks on the guage starts acting up. it starts bouncing ...The correct Evans ResistorPac to raise the fan-on temperature to 2300F is part no. RPS-C12-CA2-1730. The ResistorPac is placed in series with the coolant temperature sensor, raising the fan-on and derating temperatures by making the ECM “think” the coolant temperature is cooler than it really is. Engine Coolant Temperature : Voltage Above Normal Engine Coolant Temperature Sensor : Voltage Above Normal 110-4 110-4 Engine Coolant Temperature : Voltage Below Normal Engine Coolant Temperature Sensor : Voltage Below Normal 157-3 1797-3 Engine Injector Metering Rail #1 Pressure : Voltage Above NormalWhere is the coolant temperature sensor located on a '96 4.3L? I checked AutoZone's diagram, and I'm not exactly sure what I'm looking at there ... Tuner Cat Speed Density tune, Vac modulated trans with shift kit and vette servo, Bolt on's Camshaft Tutorial-----My Truck and The Roots Blower Project----- My Tuning Tutorial. Save ...P0118 will set if the voltage measured by the engine computer (ECM/PCM) is higher due to high resistance (Low Voltage/High Temp [Warm Engine]) like a disconnected ECT sensor. The engine computer checks for a resistance corresponding to a very low engine coolant temperature. The check is enabled whenever the ECM is powered.Both temp sensors while be on thermostat housing on a C13. Cat one will be hooked to cat harness/mesh style covering that is tougher than steel to cut. ... fan will cut in at 103 deg C engine coolant temp 73 deg C inlet air …The chart lists the resistance values in ohms (Ω) for a given temperature range. For example, at 32°F, the resistance value for a typical GM coolant temp sensor is around 9,600 Ω. At 212°F, the resistance value drops to around 185 Ω. To use the chart, you need to measure the resistance of the coolant temp sensor using a multimeter. Cat c15 coolant temp sensor location, By Liam Plunket 1 July 2023. On to the point; The crankshaft position sensor on a Cat C15 engine is located on the front side of the engine block, near the crankshaft pulley or harmonic balancer. The Cat C15 engine is a powerful and widely used engine in heavy-duty applications. Among its many vital components is the crank sensor, which plays a ..., • Engine coolant temperature sensor • The sensor for the intake manifold air temperature • The sensor for the intake manifold pressure • Speed/timing sensors • Throttle position sensor At engine start-up, the ECM determines the top center position of the number 1 cylinder from the speed/timing sensors. The ECM determines when, Step 2: Check for leaks. Be sure to check for leaks from the radiator drain plug, petcock, or the coolant temperature sensor. Step 3: Check to see if the check engine or low coolant level light is illuminated. If it is, turn off the engine and check the coolant level inside the reservoir., About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright ..., 2. Coolant Temperature Sensor and/or the CircuitA. Check the reading of the coolant temperature on Cat ET. The temperature should rise steadily as the engine is warmed. Ensure that the temperature is reasonable. Coolant temperature sensor: Result: The temperature sensor is working properly.Proceed to Test Step 3. Result: The temperature sensor ..., Engine Coolant Temperature Sensor (234-5012) A-S3 G833 -A47 18 PK 1 2 Intake Manifold Air Temperature Sensor (234-5013) 1 2 Fuel Temperature Sensor (234-5013) Timing Calibration (TC) Probe Connector 1 2 Harness (243-2321 & 248-4233) Only 120 PIN ECM Connector 13 ENGINE COOLANT TEMPERATURE 30 TEMPERATURE SENSOR COMMON 56 INTAKE MANIFOLD AIR ..., High Engine Coolant Temperature High - Moderate Severity (2) The engine coolant temperature has exceeded the trip point and the delay time has expired. The code is logged. E361(3) 110-0: Engine Coolant Temperature High - Most Severe (3) The engine coolant temperature has exceeded the trip point and the delay time has expired. Engine power ..., The fan should turn ON at 205F or temperatures greater than 205F, however the ECM sends the command to a relay. You should check the ECM to see if it is programmed for cooling fan because this is an option that can be disabled.The fan driver can be tested for functionality by using the CAT ET. Reply. Save., 4509 posts · Joined 2013. #2 · Jan 14, 2018. I believe it’s on the water crossover pipe under the intake. There are technically two coolant sensors. One is silverish with a single spade connector for the guage. The other should be brass with a plastic connector on it, that’s for the ECU. My other Subarus are Subarus., ZF Transmission CAT Adapter Plate SAE#3 for ZF 280A/IV; ... 6CTA 8.3 Coolant Temperature Sender Location. QSB 5.9. ... Unit Location. QSB 5.9 Coolant Temperature Sending Unit Location. QSB 6.7 #1 Oil Pressure, #2 Cam Position, #3 Crank Position. Coolant Temp Sensor. Common Rail Pressure Sensor. Intake Manifold Pressure/Temp …, Best Answer. The ambient air temperature sensor, on a Caterpillar see 13 diesel engine, is located between the air filter and the air intake on the engine. The sensor should be near the air filter., Category: Medium and Heavy Trucks. 4,340. Experience: Repair CAT machines only. Hello, See item #2 in the attached image. Ask Your Own Medium and Heavy Trucks Question. Not the right engine my alternator is located on driver side. Technician: cat_engines_only. Ask Your Own Medium and Heavy Trucks Question., The ECT sensor is a high-authority sensor whenever the engine is cold because ignition timing is tailored according to the engine coolant temperature. It also provides input for idle air control (IAC) position, oxygen sensor closed-loop status, on/off times for the canister purge, and idle speed., (27) Coolant temperature sensor (28) Boost pressure sensor (29) Boost pressure The injection pump, the fuel lines, and the nozzles that are used in the traditional Caterpillar diesel engines have been replaced with an electronically controlled, mechanically actuated electronic unit injector in each cylinder., Select delivery location. In Stock . Qty: Qty: 1 $ $35.00 35. 00 () Includes selected options. Includes initial monthly payment and selected options. Details . Price ($ 35. 00 x) $ 35. 00 ... Coolant Temperature Sensor …, im working on a c15 cat that has a code 110-3. we replaced the coolant temp sensor and fault is still active. engine serial number is ***** Submitted: 3 years ago. Category: Medium and Heavy Trucks, Sep 24, 2010 · (1) Engine coolant temperature sensor (2) Fuel pressure sensor (if equipped) (3) J500/P500 Injection actuation pressure control valve connector (4) Injection actuation pressure sensor (5) Boost pressure sensor (6) Air inlet temperature sensor (7) J300/P300 Injector valve cover entry connector (8) Atmospheric pressure sensor , 1). Test Step 1 - Inspect the Engine Coolant Level, and check the Cooling System for leaks. If OK, proceed to Test Step 2. 2). Test Step 2 - Check the Coolant Temperature Sensor and/or the circuit. (a). Check the reading of the Coolant Temperature on CAT ET. Read More: How to Connecting Caterpillar ET Software to the ECM ., 154-9999: Sensor-Coolant Temperature. Cat temperature sensors use thermocouples or thermistors to sense the temperature of oil, water, or air. Coolant temperature sensors keep Cat engines running smoothly, constantly monitoring coolant temperatures and allowing the ECM to make changes based on this information., CAT C15 MXS IVA warm-up control solenoid question Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by west_coaster, Mar 28, 2017. Page 1 ... 27 110-04 110-04 COOLANT TEMPERATURE SENSOR VOLTAGE LOW 28 91-13 91-13 ACCELERATOR PEDAL POSITION OUT OF CALIBRATION 29 30-08 644 ..., Mar 12, 2012 · The coolant temperature sensor is located on the thermostat housing an all of these year models. It is very hard to see. You have to go in from the front of the engine to find it. , On the Avengers, the engine is transverse (sideways) mounted placing the left head right in front. So the sensor will be all the way to the right and down a little on the head facing forward (towards you). Reply. Save. Darwinlop504 · #6 · Jul 31, 2018. Having trouble fininding this on my 2013 S/E. Reply. Save., The ECM monitors engine coolant temperature, intake manifold air temperature, and hydraulic oil temperature. The ECM monitors the sensors in order to determine the correct speed for the engine cooling fan. The ECM controls the speed of the fan by controlling the current to the engine fan control solenoid., Robust level switch for engine and tank applications to provide warning of low level. Capacitive principle provides robust design with no moving parts. Active sensor requires an external electrical power supply. Available as switch to ground or high side switch. Designed for engine mounted applications. Attributes: • Use in coolant or water., If a problem is still suspected with the coolant level sensor, proceed to Test Step 2. Test Step 2. Determine the type of Coolant Level Sensor. A. Check the coolant level sensor in order to determine the type of sensor that is installed on the vehicle. Expected Result: A “4-pin” or “2-wire Float Sensor” is installed., I have a mxs c15 acert catapillar engine and the oil temp gauge and the coolant gauge is fluctuating . one minute coolant and oil temp is at operating temps coolant 180 and oil temp 200-210. then they both fall to 150 or sometimes 100 2-5 minutes later its at normal temp or it will drop to 150 and so on., The engine coolant temperature sensor is located on the thermostat housing. Conditions for Running the Diagnostics: This diagnostic runs continuously when the keyswitch is in the ON position. Conditions for Setting the Fault Codes: The ECM detects that the coolant temperature signal voltage is greater than 5.13-VDC for more than 1 second., I have a mxs c15 acert catapillar engine and the oil temp gauge and the coolant gauge is fluctuating . one minute coolant and oil temp is at operating temps coolant 180 and oil temp 200-210. then they both fall to 150 or sometimes 100 2-5 minutes later its at normal temp or it will drop to 150 and so on., engine, only purchase Cat fluids and filters through your Cat dealer or Cat authorized outlets. For a list of authorized Cat parts outlets in your area, consult your Cat dealer. If you purchase what appear to be Cat fluids and/ or filters through other outlets/sources, you are at high risk of purchasing counterfeit products., Temperature sensors are prone to failure. I once visited a power plant and they were about to rebuild a big CAT engine because it was running hot and they ..., High water temps and put a fuel temp wire on it and it would go up to 230°F in a pull quite quick. Fuel temp wire made the problem much more noticable! E model Cat man , Jul 6, 2016, 27 110-03 110-03 coolant temperature sensor voltage high 27 110-04 110-04 coolant temperature sensor voltage low 28 91-13 91-13 accelerator pedal position out of calibration 29 30-08 644-08 pto throttle signal invalid 29 30-13 644-13 pto throttle signal calibration, The correct Evans ResistorPac to raise the fan-on temperature to 2300F is part no. RPS-C12-CA2-1730. The ResistorPac is placed in series with the coolant temperature sensor, raising the fan-on and derating temperatures by making the ECM “think” the coolant temperature is cooler than it really is.