I just purchased a 1991 Gramd Am LE with the 2.5 L 4cyl. It ran fine for a few days when I first purchased it last weekend, but the check enine light was on. The seller told me that the mechanic had disconneced the Oxygen sensor, something to do with the emissions test I beleive he said. The car ran fine for a few days. Then i took it in to get a safety check done, and my mechanic hooked the Oxygen Sensor back up for me. The car seemed to run fine for another day or so, then it stalled on me and I had to have it towed in for repair. My mechanic found the Crank Position Sensor was broken, and he replaced it. I took the car home, and it seemed to run fine, but the check engine light was now on again. When i got home, I checked it out, and sure enough, the Oxygen Sensor was disconnected again. I had to still get an emissions test done in order to get it on the road legally, so I hooked it back up, and tried to take it back to get the E test. It stalled again, on the way there. So I disconnected the Oxygen sensor yet again, and it started and ran fine. I took it for it's E test, and it failed misserably. The test showed that I was burning way too much fuel in the car, and the guy gave me a few ideas to look at. I drove it home from the test facility, and put in a new Oxygen sensor, new air cleaner, PCV filter, and plugs. I thought that this would help it pass the E test once i return with it, but the car stalled again on me this morning, and this time the Oxygen Sensor was disconnected. It seemed to run OK the other times while the Oxygen sensor was disconnected, now it does not.
Questions:
- What else could cause it to burn too much fuel?
- Is this the cause of all of the stalling or could it be something else?
- Does the EGR system have anything to do with the car stalling?
Any other help would be greatly appreciated.
TIA Duane