I have a '88 GT with a 3800 SC Series II engine & 4-speed A/T. When I purchased the car, it had a gauge cluster in it that was nearly identical to my girlfriend's 2003 Buick Century 3.1L. The only difference really is the gauge cluster in the '88 Fiero had a tachometer and my girlfriend's Century does not have a tach. I have only driven the Fiero around the yard and a little bit in the neighborhood since I have owned it. The Buick gauges looked so bad in it that I unplugged them a while ago and ran the car without gauges when I needed to move it. It ran fine without any gauges. Yesterday I started to repair the stock plugs for the stock gauges and today I finished up that task and installed a set of spare stock gauges I had.
Now the car starts, but will not stay running. It will start every time, but only run for 2 or 3 seconds before it stops running. It kind of acts like it is running out of fuel, but I added gas to the tank and that did not make any change.
The stock tach is not working, so I am thinking that may be a clue to the running issue, but not sure of that either.
Do you think I may have disturbed some input into the ECM, which is causing the car to kill after it starts?
Thank you for any help and ideas.
[This message has been edited by hdryder (edited 07-04-2015).]