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I been trying to figure out a problem with my 2.8 litre for a while now, replacing a couple sensors along the way unsuccessfully. It would sometimes stall at idle or upon deceleration and I kinda lived with it. It goes worse though, when it to started to stumble and hesitate real badly upon accelera...

My '88 Grand Prix 2.8litre hesitates and stumbles badly under load, and cranks but wont restart when its hot. When it wont restart, I tested for spark and fuel pressure is 42psi when cranking. I was thinking its the injectors, so I pulled the plenum on the car and measured them. On the front bank, t...

While testing the fuel pump pressure when the car wont start, pressure is at 42psi while cranking. While the car is running, pressure is at 38psi. When I turn the key to ON, but not cranking though, pressure is at 38psi for a few seconds while the fuel pump energizes, but then pressure drops down to...

I am working on a 1988 Pontiac Grand Prix 2.8 litre that hesitates and stumbles real bad upon acceleration between 20-30mph, stalls out when hot and is hard to restart. Fuel pressure looks good and the car was recently tuned. It looks like it may be a faulty MAF sensor since it comes up with a code ...

I have an '88 Pontiac Grand Prix with a 2.8litre V6 and auto trans. The car starts well, idles ok and runs ok when cold. Once it warms up and I try to accelerate normally from say 20MPH to 30MPH the car would stumlbe badly to the point that if I dont let off the accelerator it will stall out and die...