Questions & Answers for: replace temp sensor 2003 trailblazer

...temp). The engine appears to idle and run fine; however, the service engine soon light continues to alternate on and off. I have an inline 6 engine on a 2003 Trailblazer LT 4WD. The engine has just ...

replace the colant temp sensor on 03 trailblazer 6 cyl 4.2 2wd? what parts need to be removed? Too lengthy an explanation needed...Go to AutoZone or NAPA and buy a Chiltons repair book ($20) Good Luck

...temp sensor replace from the sound of it. if bad it will think it is cold and dump more gas to keep it running. it also runs the fans YOUR FAN CLUTCH IS A ELECTRO VISCOUS PCM CONTROLLED FAN ...

sensor is not responding,it is below normal temperature.It needs to be replaced. I vote with solution #2. This code sets when thermostat does not cycle properly. I had the same issue on my 2002 Blazer

...temp sensor will be done tomorrow . No DTC - diagnostic trouble code say's to replace a part , with each factory DTC a diagnostic flow chart or trouble shooting chart is supplied . Checking the ...

may indicate the malfunctioning sensor.The fan overspeed is a computer generated safety backup for electric fan clutch engagement so the engine don't overheat when the coolant temp sensor malfunctions

...temp sensors (meaning fairly easy to replace), once you know the offending item. If multiple codes, do more research, there will be a most common failure item, like a TPI sensor. Do the statistically ...

...Replace with new one in reverse order. While you're in there, you can change out your coolant temperature sensor too if you want, it's about $37 and is about 2" above the thermostat. Just inplug the ...

...and temp is normal Although temp here is 50 Celsius these days. Its the sensor that is behind the alternator on the right hand side of the engine take the alternator off and the sensors right ...

...better. Running to cold,,Thermostat or tempeture sensor, that was what mine was doing... it was out of the computers temp. range and was causing the comp. to run the motor as cold when it was