Mild bucking problem on '01 SSEi - Page 2 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


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Old 03-10-2011, 11:54 AM   #11
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whens the last time you changed plugs
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Old 03-10-2011, 01:19 PM   #12
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I have not since I got the car about 6k miles ago, car has 131k on it. I looked at the plugs when I changed wires, they were all gray, clean and gaped at .060". Probably should have changed them anyway, they could be very old, not sure.
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Old 03-10-2011, 01:29 PM   #13
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i would say if your not sure, thats usually the problem or wires but you did those. also look for corrosion on the coil terminals if someone didnt put dielectric grease on there it builds corrosion fast and has those same symptoms.
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Old 03-11-2011, 03:55 AM   #14
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Heads-up: Goatmaster'* problem didn't seem similar to you guys', so if you're looking for it, I moved it into its own thread.
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Old 03-13-2011, 09:46 PM   #15
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Well I changed the plugs, no help. I didn't mention it before, but I have not gotten any error codes. There was no sign of any corrosion on the coils top or bottom when I tested them. Any more ideas would be appreciated. Thanks
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Old 03-30-2011, 04:21 PM   #16
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Update on my buck/hiccup/shudder etc. finally took it to my favorite mechanic, he drove home for a couple of days and got it to shudder. He checked the stored codes right after it did it. Turned out to be a Mass Air Flow sensor. I tapped and banged on it in my garage before took it to him and could not get it to shudder. But he changed it and 'Ive driven it for about 150 miles with out any more problems yet.

Hope this will help someone else in the future.
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Old 03-30-2011, 06:14 PM   #17
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Good to hear.
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Old 04-11-2011, 02:07 PM   #18
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Got it fixed!!! Bottle of Trans X an no problem since. I wanted to test it out for a while before I repolsted. I think maybe the TC is going in and out of lock up. Thanks alot!!!!
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Old 04-11-2011, 10:45 PM   #19
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Quote:
Originally Posted by SpringCitySSEi View Post
Got it fixed!!! Bottle of Trans X an no problem since. I wanted to test it out for a while before I repolsted. I think maybe the TC is going in and out of lock up. Thanks alot!!!!
I figured I should back up a little bit and explain what all has happened since the last time I posted. After the testing of plugs, wires, coils, injectors, vacuum lines, TCC switch, brake switch, and so on....I was running low on options. I consulted several different transmission shops, my old man (who has had 4 L67 powered cars in the past), and...other sites. I came to the conclusion (along with all the suggestions) that what I had were symtoms of "converter shudder". I was advised to try some Trans X and I figured I would give it a try. After adding, I ran the car at idle in park for about 15 minutes and then took it out for several overpasses and inclines at highways speeds. I am happy to report that there was ABSOLUTELY no shudder or bucking whatsoever after the Trans X.

I am not saying this will help averyone with the same problem, but it did help me out.
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Old 04-19-2011, 10:29 PM   #20
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My '01 SSEi did the same thing at about 120K miles. It was a weak fuel pump. No more problems after installing a new unit.
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