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Shaking and No Accleration!!!


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devinvogel09
New User

Mar 1, 2009, 9:30 AM

Post #1 of 3 (1234 views)
Shaking and No Accleration!!! Sign In

Hi, I have a 1990 Oldsmobile Cutlass Calais with a 2.3L 4 cyclinder and about 64,000 miles. about a month ago the car started shaking really bad and had no acceleration. And then i was driving and it started shaking really bad so i slowed down and then it just shut of. So i ran the codes and it said it was the OXYGEN SENSOR. So i replaced that and it still shakes. So then someone told be to replace all the spark plugs cause maybe it was miss firing so i did that . But today it started shaking and had no acceleration and shut off completly again. I have no idea what is the matter. PLEASE HELP!!!!!


Tom Greenleaf
Ultimate Carjunky / Moderator
Tom Greenleaf profile image

Mar 1, 2009, 9:48 AM

Post #2 of 3 (1232 views)
Re: Shaking and No Accleration!!! Sign In

Ok: A 4 cyl missing on one will feel like 1/2 and run like crap of course. It may be random or picking on one cylinder. Can you tell? Do you recall what the plugs looked like that came out and if one was different or all about the same?

If you think it's just one you'll feel it at the tailpipe as a single putt if it will stay idling long enough to check. Random feels random at the pipe also - simple low tech way to tell.

I will help a lot to be quick to diagnose and fix this asap to prevent damage or further damage to o2 sensors or converter.

If you think it's just one try cancelling plugs one at a time by pulling plug wire and grounding it. THE one if only one won't change the character so work on that.

You didn't mention wires (plug) which should be replaced by now also and could be the whole issue.

See what more you can nail down for a diag and let's go from there,


T



Loren Champlain Sr
Veteran / Moderator
Loren Champlain Sr profile image

Mar 1, 2009, 11:02 AM

Post #3 of 3 (1228 views)
Re: Shaking and No Accleration!!! Sign In

What code did you get when you scanned it? How did the spark plugs look when you replaced them? When you get a trouble code, all that tells you is that there is a problem in that particular area, not that the actual part is bad. Double check your firing order to make sure you don't have a couple of plug wires crossed. Doubt it, but worth a check. I know I'm jumping to conclusions here, but it sounds like it may be over fueling.
Loren
SW Washington






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