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Originally Posted by Brokecelebrity
Okay, any ideas greatly appreciated. I have a 1987 Chevy Celebrity that I have used as my back up car for a rural mail route. A couple months back, in the middle of the route, it stalled on me twice. Like the fuel was cut off. I put the car in nuetral and turned the key and it started up and ran for another minute, then cut out for good. After playing around with it for a bit, I put some gas in throttle unit, and it ran until the gas burned off. As this was my back up car, I let it sit for a couple months, thinking it was the fuel pump and I'd replace it when I had time. I had another Celebrity a couple years back that had the fuel pump go out and it did the exact thing, once I replaced the pump, it ran great. So, last week I went and bought a new pump. Couple days ago, I decided I'd replace it and get the car going again. Once I had it jacked up and supported, I had the fuel line and the fuel filter exposed, figured, what the heck, might as well do an easy check. I took the fuel filter off, turned on the key, and viola, gas started pouring out. So, fuel pump is good, but, it still won't start. I have spark, and after disconecting the fuel line at both the firewall and the throttle body, I have determined that it has fuel pressure, but something isn't working right. I have narrowed it down to either the ECM, the fuel injector unit itself or the crank angle sensor. Anyone know the best way to check any of these possibilities to determine which it is? I can throw cash at a problem all day long, but I usually run out of cash before daylight, so I guess the first part of this sentance isn't true.  Any help appreciated. Thanks. |
I realize this is an old post, you probably have it fixed by now. You should have listed your engine size.
The way you tested the pump, is not a conclusive test. By the way, my info doesn't show a TBI 2.8L, it does for the 2.5. I've seen TBI injector spray patterns that looked ok, but when I checked the fuel pressure, it was half of what it should have been. On some models, I have removed the fuel pump, layed it on the ground, hooked up battery voltage to the pump, it took off like a bat, throwed gas everywhere, you'd be surprised how much gas that little pumpbody would hold. I guess I'm lucky, I didn't start a fire. That little test didn't make any difference, I knew the pump was faulty. Did you ever check fuel pressure?