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View Full Version : Odd buck when pulling away from stop



kostaccio
09-18-2013, 04:18 PM
I have been recently experiencing this weird buck/dead spot whenever pulling away from a stop or when I am moving slowly and heading uphill and give it more throttle to get up to speed. The first time it did this today was when I just started the car and was pulling out of the work parking lot. It stalled completely and when I went to try and start it, it was cranking really slow like it had a dead battery. I took the key out completely, put it back in, and it started like nothing had happened. It had this weird buck/dead spot issue happen 3 more times on my drive home. And it only bucks once when it does it. My car is a 90 SC with 54k original miles and to my knowledge all of the sensors under the hood are still the original as well as the plugs and wires. Does anyone know where I can start to look for an issue seeing I don't have a check engine light on?

S_Mazza
09-18-2013, 04:39 PM
Your ignition switch may be falling apart. I would check that first. You only need to remove the 2-piece column cover to check.

kostaccio
09-18-2013, 05:18 PM
Your ignition switch may be falling apart. I would check that first. You only need to remove the 2-piece column cover to check.


What all should I be looking for? I should also note that the car occasionally has the hard to start issue and when it fires up puts a lot of black smoke out the tail pipes

S_Mazza
09-18-2013, 06:39 PM
What all should I be looking for? I should also note that the car occasionally has the hard to start issue and when it fires up puts a lot of black smoke out the tail pipes

If the white plastic part is coming apart from the gray metal part, you have a problem. Be careful, some of the wires are always "hot". Better to disconnect the battery before messing with it. But you may be able to tell by sight anyway.

kostaccio
09-18-2013, 07:51 PM
Checked inside the column and nothing is broken. Seeing the symptom after the car stalled it seemed like it had a dead battery and was cranking slowly it almost seemed like a sensor is messed up. I have a new cam sensor in my car (I've had it for months) and thought about trying the TPS next. I just don't want it dying while I'm driving a major highway

S_Mazza
09-18-2013, 10:38 PM
Checked inside the column and nothing is broken. Seeing the symptom after the car stalled it seemed like it had a dead battery and was cranking slowly it almost seemed like a sensor is messed up. I have a new cam sensor in my car (I've had it for months) and thought about trying the TPS next. I just don't want it dying while I'm driving a major highway

Cranking slowly seems unlikely to have to do with a sensor. Maybe a bad connection at the starter relay on the fender, or at the starter itself. Or the negative battery cable or ground, perhaps.

kostaccio
09-21-2013, 09:44 PM
I'll keep checking for the issue seeing it's been a few days since I have had any issues. I hate intermittent problems like this seeing it may be a while till it happens again