Been doing some work on my '94 auto and now that I'm done it runs like crap. Before I had a bad miss and it would stall occasionally while idling, it's run like that since I've had it. Now, it idles like garbage and stalls randomly when not under acceleration- sometimes while sitting still idling, sometimes while rolling up to a stop. Still misses occasionally, but not as bad as before, just idles rough with occasional surges. I start it up, idle goes to about 1200 for a second or two then dips to just under 500 before settling at 6/700. Runs for a minute or two then just shuts off. No stutter, no surge, just shuts off. It has no problems starting back up after it stalls, it is just doing it a lot and at inconvenient times. So here's what I've done to it:
- battery/alternator ( done just before I bought it)
-plugs/wires (a couple months ago)
- all aluminum radiator/ new t-stat (last week)
*and here's where the real problems started
- crank/cam sensors (this afternoon)
- fixed several broken vac lines
So my real problems started this afternoon. After we got the new sensors in we noticed some vac lines that needed replacing. The line from the pass side pcv valve that runs down the front pass side of the car was completely broken and disconnected. The other line coming from the pcv that looks like it should have run behind the engine was missing so the T had an uncapped end. We couldn't trace where it should have gone to on the other side so capped it for now. A few of the lines for the emissions stuff were broken so we replaced them. Couldn't get the plastic lines at the parts store so used appropriately sized rubber hose.
When we got it all back together and started it up is when it started running like crap. We had the battery disconnected the whole time we were working on it so the computer was reset. My brother seems to think that since the vac leaks we fixed had likely been there a long time and were substantial that it may take a little while for the computer to relearn what's going on. I drove it a little but not very far (under 10 miles) and the problems persist. Sometimes when I'm slowing down to a stop or to go around a corner it will lose power, the rpm dips below 500 and then it stalls. It's not throwing the engine light as of yet. Didn't have time to pull codes but I will tomorrow.
Sorry for such a long post but I need help. Driving it to work tomorrow will be an adventure. Does anyone have any ideas?
- battery/alternator ( done just before I bought it)
-plugs/wires (a couple months ago)
- all aluminum radiator/ new t-stat (last week)
*and here's where the real problems started
- crank/cam sensors (this afternoon)
- fixed several broken vac lines
So my real problems started this afternoon. After we got the new sensors in we noticed some vac lines that needed replacing. The line from the pass side pcv valve that runs down the front pass side of the car was completely broken and disconnected. The other line coming from the pcv that looks like it should have run behind the engine was missing so the T had an uncapped end. We couldn't trace where it should have gone to on the other side so capped it for now. A few of the lines for the emissions stuff were broken so we replaced them. Couldn't get the plastic lines at the parts store so used appropriately sized rubber hose.
When we got it all back together and started it up is when it started running like crap. We had the battery disconnected the whole time we were working on it so the computer was reset. My brother seems to think that since the vac leaks we fixed had likely been there a long time and were substantial that it may take a little while for the computer to relearn what's going on. I drove it a little but not very far (under 10 miles) and the problems persist. Sometimes when I'm slowing down to a stop or to go around a corner it will lose power, the rpm dips below 500 and then it stalls. It's not throwing the engine light as of yet. Didn't have time to pull codes but I will tomorrow.
Sorry for such a long post but I need help. Driving it to work tomorrow will be an adventure. Does anyone have any ideas?