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Sedans Buick Park Avenue '95 Buick Park Avenue - Rough Idle and Hesitation
3 messages, Last post on Sep 10, 2009 at 9:23 AM
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I've had my vehicle for 3 years with no problems. Before that my grandfather owned it for at least 5 years. It currently has 133,400 miles. I was out of town for a week and the car sat in the driveway. When I went to start it up for the first time last Thursday, it wouldn't start. It just clicked when I tried to turn the key. AAA came and started it and we took it straight to the mechanic who put in a new battery. He checked several other things and said everything seemed fine. It ran fine for a day and then I let it sit for 2 days over the weekend. On my way to work on Monday(yesterday), I experienced rough idling and hesitation while driving. On my way home, I experienced the same thing and the check engine light came on. However, since I turned the car off the check engine light hasn't come back on. (So I can't take it somewhere to read the computer codes.) The hesitation and rough idling appear to be getting worse (I drove it this morning and afternoon), but the check engine light isn't coming on. By the way, when I say hesitation - when I press the gas pedal the car shakes and runs really rough and as soon as I take my foot off, the roughness stops. It only happens randomly. I'm assuming it's something with the fuel ... any help would be appreciated!
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Replying to: artworks1 (Sep 01, 2009 9:16 am) Bad coils or coil... or the ESC plate underneath is going bad? Check connections to the plate and then take off each coil and inspect under it and inspect the leads on the high voltage side. Fuel pressure. You'd need a gauge to put on it and tape to windshield for a while. I believe someone said some of the autoparts stores loan fuel pressure gauges. There should be a code stored. It would be worth finding out what it is. How long since it's had spark plugs and ignition wires? The other thing that comes to mind is some Bonneville owners say there are more computer failures in 94 and 95 than in other years. One symptom of that is strange behavior like you're saying--still driveable but bad. Computers are relatively cheap.
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Replying to: imidazol97 (Sep 01, 2009 1:49 pm) The mechanic wasn't really sure what to do but said replacing the Ignition Control Module might work. If that didn't work then the only other option would be to replace the computer. He didn't seem too optimistic but once I told him about the problem occurring daily on my commute he seemed more confident it would fix the problem. It cost me $400 ... and the next day I drove it and the "check engine" light came on right after it ran really rough going up a small hill (almost like it wanted to just shut off). Of course as soon as I turn the car off, the "check engine" light goes off. Anyways, I traded vehicles with my grandfather and he's going to take a look at it for me. I printed out the previous response, so hopefully that will help him out. Any clue on what that code could mean in combination with my cars symptoms? |
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