Recently my 1995 geo was totalled when a dumb person pulled out in front of me on a steep hill. So as a replacement I bought a 1988 fiero 2.5L, was $900 and 100,000 miles on the clock so it was a good deal in my opinion.
Problem I'm having is that when the car gets near 1/2 a tank it starts stuttering, and stalls occasionally while driving. When it gets to 1/2 a tank the car will start, but stalls almost immediately. I've diagnosed it as fuel related, but I have a hard time trying to get any sort of tee in to check fuel pressure.
It has throttle body injection so it just has the single injector. I added 5 gallons to it today, drove it around the block, bled the brakes and drove it about 1/2 a mile. It had a stumble on the first trip, but cleared out immediately. The car does seem low on power, but otherwise runs fine.
My question is, there is a fuel pressure regulator diaphragm that tends to go bad on these engines, would this seem to be the problem, or could it potentially be a bad fuel filter/pump?
EDIT: And before anyone says I could potentially have a problem with my fuel level gauge/sender. The tank reads 1/2 and with the air cleaner off I do in fact smell and see the fuel being injected.
