Code 54, 1986
Thread Starter
Drifting
Joined: Oct 2001
Posts: 1,770
Likes: 33
From: Cohasset MN
2017 Corvette of the Year Finalist
2016 C1 of Year Finalist
Code 54, 1986
This may not be anything new for some of you. I had a code 54 that resulted in a difficult starting situation and a "service engine soon light." It started out intermittant and then did it all the time.
It turns out that both the fuel pump relay and the ECM were bad. After the fuel pump relay was replaced, it ran fine for about a week and then the trouble came back. I went through the troubleshooting procedure per the shop manual for the fault code and this time the relay was OK but the ECM was bad. I replaced it today and everything is fine. I hope it stays that way.
Have any of you had a similar experience? At any rate, I hope this helps some of you if you do.
It turns out that both the fuel pump relay and the ECM were bad. After the fuel pump relay was replaced, it ran fine for about a week and then the trouble came back. I went through the troubleshooting procedure per the shop manual for the fault code and this time the relay was OK but the ECM was bad. I replaced it today and everything is fine. I hope it stays that way.
Have any of you had a similar experience? At any rate, I hope this helps some of you if you do.
