2003 Ram 2500 Engine Coolant Sensor
From : frank warner
Q: got a check engine light on my 2003 ram 2500 with 5.7l hemi over the weekend. i checked the ecm and got the code p0116 engine coolant temperature circuit range/performance problem. no other codes came up. after a couple of hours on the internets ive determined that ive got a faulty or shorting coolant temperature sensor. they are relatively cheap and it looks like easy to replace but i cannot find any info about where it is located on the 5.7l hemi engine or replacement procedures/warnings. id be much obliged if one of you kind souls can point me to any online diagrams and procedures for this job. what i was able to find did not seem to apply to this engine. pictures would be helpful. behind and below the alternator doesnt help because there seems to be a whole lot of other stuff packed in there. also is the truck safe to drive for a couple of days while i get the part and the time to replace it many thanks -frank -- heres some of my work http//www.franksknives.com/ .
Replies:
From : damnnickname
i wouldnt worry about the sensor. the code you have is a rationality faultand more then likely the engine thermostat is causing this code to set. itis a common fault and the fix has always been the thermostat. glenn beasley chrysler tech .
From : peterd
on mon 17 nov 2008 110724 -0800 frank warner warnerf@verizondotnet.net wrote got a check engine light on my 2003 ram 2500 with 5.7l hemi over the weekend. i checked the ecm and got the code p0116 engine coolant temperature circuit range/performance problem. no other codes came up. after a couple of hours on the internets ive determined that ive got a faulty or shorting coolant temperature sensor. oh and no chance of a stuck thermostat not allowing the truck to properly heat up they are relatively cheap and it looks like easy to replace but i cannot find any info about where it is located on the 5.7l hemi engine or replacement procedures/warnings. 5.7l v-8 the engine coolant temperature ect sensor on the 5.7l engine is located under the air conditioning compressor fig. 12. it is installed into a water jacket at the front of the cylinder block. warning hot pressurized coolant can cause injury by scalding. cooling system must be partially drained before removing the coolant temperature sensor. you must unbolt the a/c compressor and carefully move it out of the way to replace the sensor. but check again that the sensor is defective or not as there are other problems which will cause this code. id be much obliged if one of you kind souls can point me to any online diagrams and procedures for this job. what i was able to find did not seem to apply to this engine. pictures would be helpful. behind and below the alternator doesnt help because there seems to be a whole lot of other stuff packed in there. also is the truck safe to drive for a couple of days while i get the part and the time to replace it probably ok to drive. most commonly if the check engine light is steady on it is ok to drive but wont be effieient. if the check engine light is blinking do not drive! many thanks -frank .
From : frank warner
peter2@hipson.net wrote on mon 17 nov 2008 110724 -0800 frank warner warnerf@verizondotnet.net wrote got a check engine light on my 2003 ram 2500 with 5.7l hemi over the weekend. i checked the ecm and got the code p0116 engine coolant temperature circuit range/performance problem. no other codes came up. after a couple of hours on the internets ive determined that ive got a faulty or shorting coolant temperature sensor. oh and no chance of a stuck thermostat not allowing the truck to properly heat up they are relatively cheap and it looks like easy to replace but i cannot find any info about where it is located on the 5.7l hemi engine or replacement procedures/warnings. 5.7l v-8 the engine coolant temperature ect sensor on the 5.7l engine is located under the air conditioning compressor fig. 12. it is installed into a water jacket at the front of the cylinder block. warning hot pressurized coolant can cause injury by scalding. cooling system must be partially drained before removing the coolant temperature sensor. you must unbolt the a/c compressor and carefully move it out of the way to replace the sensor. but check again that the sensor is defective or not as there are other problems which will cause this code. id be much obliged if one of you kind souls can point me to any online diagrams and procedures for this job. what i was able to find did not seem to apply to this engine. pictures would be helpful. behind and below the alternator doesnt help because there seems to be a whole lot of other stuff packed in there. also is the truck safe to drive for a couple of days while i get the part and the time to replace it probably ok to drive. most commonly if the check engine light is steady on it is ok to drive but wont be effieient. if the check engine light is blinking do not drive! thanks peter. do you have a link for the above information im interested in seeing fig. 12. -frank -- heres some of my work http//www.franksknives.com/ .
From : peterd
on mon 17 nov 2008 130650 -0800 frank warner warnerf@verizondotnet.net wrote peter2@hipson.net wrote on mon 17 nov 2008 110724 -0800 frank warner warnerf@verizondotnet.net wrote got a check engine light on my 2003 ram 2500 with 5.7l hemi over the weekend. i checked the ecm and got the code p0116 engine coolant temperature circuit range/performance problem. no other codes came up. after a couple of hours on the internets ive determined that ive got a faulty or shorting coolant temperature sensor. oh and no chance of a stuck thermostat not allowing the truck to properly heat up they are relatively cheap and it looks like easy to replace but i cannot find any info about where it is located on the 5.7l hemi engine or replacement procedures/warnings. 5.7l v-8 the engine coolant temperature ect sensor on the 5.7l engine is located under the air conditioning compressor fig. 12. it is installed into a water jacket at the front of the cylinder block. warning hot pressurized coolant can cause injury by scalding. cooling system must be partially drained before removing the coolant temperature sensor. you must unbolt the a/c compressor and carefully move it out of the way to replace the sensor. but check again that the sensor is defective or not as there are other problems which will cause this code. id be much obliged if one of you kind souls can point me to any online diagrams and procedures for this job. what i was able to find did not seem to apply to this engine. pictures would be helpful. behind and below the alternator doesnt help because there seems to be a whole lot of other stuff packed in there. also is the truck safe to drive for a couple of days while i get the part and the time to replace it probably ok to drive. most commonly if the check engine light is steady on it is ok to drive but wont be effieient. if the check engine light is blinking do not drive! thanks peter. do you have a link for the above information im interested in seeing fig. 12. -frank sorry no link. figure 12 shows the compressor. as best i can tell from the image the sensor is easy to spot. consider a good light and a mirror and peer under the compressor and see what is there. if need be i can look at an 04 hemi and see if there is something to reference to in finding it. .