My Galant has a CEL code P0181 - replace fuel temperature sensor, but no one sells the part or ever heard of it with no diagram that shows where it's located on the car, please help.
That's the best info I've heard since starting this search, thanks
It's integrated into the fuel pump.
@hillbilly
That's what I thought too, but I replaced the entire fuel pump assembly twice with no change, so I contacted the local dealership parts department and was tool that it was no such animal.
Service manual shows it integrated. So what did the dealer say about the code then....
I'll look at manual and see if I can determine what else could throw that code. My answer above was simply answering your question... didn't research code issue.
Can you hook up a code reader and see if it gives a temp value? (it should) and while your at it, get air temp (from sensor/code reader) and coolant temps. And do you have old pump (you can verify if a thermistor is in it or not...)
Yes, I've booked the reader and cleared and scanned several times but always comes back.
I'm sorry, I don't mean check /clear codes. Most (well decent) reader will allow you to "read" and acutual value.... what temperature reading does the reader say for that sensor?
I've delt with this same problem for a year now on my 2002. I've replaced the fuel pump 4 times, along with other things. Mitsubishi dealership says you have to replace with OEM pump and there is only one in the country for $500 +shipping + labor. Local shop said that's ridiculous because Delphi wouldn't sell parts that don't work. He thought it was a faulty fuel pump connector. Replaced that but it didn't help. I wonder if it's the computer. A friend mechanic says he doesn't believe it's a computer, that there could be a damaged wire underneath the carpet from friction of the seat moving forward and back after a while. He recommends tracing the wires and testing for resistance. I'm still stuck on it but thought this information might help
Yes, it could be that. Not at diagram atm , but the thermistor itself can be checked on the pump easily if you do a resistance check on the proper 2 pins.
SOLVED -
I purchased a used OEM Mitsubishi fuel pump online with no engine codes. I removed the OEM fuel temperature sensor from it and put it on the new existing fuel pump. It was not an exact fit but I got it on there. I used a scan tool and cleared the engine codes. Drive a mile down the street. And the scan tool says all codes are green and ready for emissions testing.
SOLVED -
I purchased a used OEM Mitsubishi fuel pump online with no engine codes. I removed the OEM fuel temperature sensor from it and put it on the new existing fuel pump. It was not an exact fit but I got it on there. I used a scan tool and cleared the engine codes. Drive a mile down the street. And the scan tool says all codes are green and ready for emissions testing.