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Pontiac Bonneville General Maintenance and Repair

2241 messages,  Last post on Mar 11, 2010 at 10:18 AM

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What is this discussion about? Pontiac Bonneville, Sedan

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#51 of 2241 close but no cigar by pontihell2 Sep 25, 2000 (5:58 pm)
I had a friend look at my 94 Bonnevile and we decided to go for a drive so that he could feel the problem. As soon as it started he said I had an ingition problem, so we went to his shop and he tested the coil pack. Sure enough one of the three coil packs were bad. The car ran a little better but was still not like it should have been. Next we replaced the computer with one from a wrecked 95 bonneville and it ran great for three days and now the jerking and convulsing motor is acting up again at 2000 rpms,especially in OD. I am totally clueless at to what may be causing these problems.It has new plugs, wires, fuel pump, computer, coil pack, injectors, and fuel filter. Help..........
#52 of 2241 Stuck ABS motor by roma007 Sep 26, 2000 (2:38 pm)
Hey guys, I have a '97SSE with 78K, and recently my ABS and Traction Control lights came on when I started the car and stayed on. It didn't happen all the time. I took it to the mechanic, and he says the computer shows a "Stuck ABS motor." He is not sure if it is the traction controle module or the whole ABS system needs to be replaced. Apparently there is a whole procedure he has to go through to determine that. Anybody have a similar situation, and what would case this? ...by the way my transmission was behaving very similar to what you guys are describing and putting a little fluid in fixed it. Replies to this message: rbullock440 (Mar 12, 2009 11:38 am)
#53 of 2241 Tranny problems STILL GONE! by bigbaboo Oct 02, 2000 (5:22 am)
Just an update... My 92 is still running fine. A few comments & answers for some posts... First to "ssei"... I actually had the problem a few months ago and did a complete tune up (including wires, & coil pack) that seemed to fix the problem. It came back, Then I had a shop test it. Apparently there was also a prob. with the control module under the pack. I had to replace it. Problem fixed? Only for about 1 month. The bad controller must have messed up the new coil pack? I don't know, they are electrical parts... That was the last thing I replaced on 9/11. So far so good... In response to "hodgie1"... Sorry I haven't looked back in a while... The car did seem a bit under powered when I was having problems. This would be VERY consistent with missing sparks. A few times I noticed a little backfire when aggressively accelerating. This kinda led me to the "tune up" I spoke about. I would suggest a tune-up if your car is due. And definitely include wires... Let us know how you fared.
#54 of 2241 2000 head-up display by mrjava Oct 02, 2000 (11:45 pm)
I have a 2000 SSEi and the "head-up" display shows a different speed than the speedometer. Is this normal? How does one get them to be the same?
#55 of 2241 SSEi heads up by dmckeown Oct 03, 2000 (3:35 pm)
How much is it off ? My 2000 SSEi is about 1 mph different with the analog reading faster then hud . I just figured is was normal tolerances in the two systems . Doug
#56 of 2241 Convulsions by reino4 Oct 04, 2000 (3:39 pm)
I've read all the topics about the bonnies jerking and convulsing while driving. My problem is that it's happening when I go to accelerate, it sounds and feels like the front wheels are jerking and convulsing, shaking the whole front end, it's never happened while driving, only while accelerating from a stop. I then release the accelerator and re-accelerate a little slower and it's fine. Any help? 1999 Bonneville 20,000 miles.
#57 of 2241 To number 3 coil problem by jkk6 Oct 04, 2000 (4:46 pm)
I have a friend who has a 94 Bonneville and he has had to replace coil packs 3 different times (after warrrenty expired of course). The last 2 times he purchases the coil packs and did the labor himself.
#58 of 2241 SSEi Heads up by jkk6 Oct 04, 2000 (4:46 pm)
Our heads up display reads 4-5 miles less than the actual speedometer, and only seems to do it when we're on the freeway. Maybe above a certain speed or when cruise is on.
#59 of 2241 Transmission by edmund17 Oct 05, 2000 (8:40 pm)
I have a 92 SE that had to have a transmission rebuilt after some kind of internal seal broke down. The transmission was rebuilt at about 100,000 miles and AFTER it was rebuilt it immediately had the same kind of problems as many people are describing here (shudder in O/D on accelerating while driving at highway speeds, more noticeably when going uphill & accelerating lightly). It's interesting to read about the "coil packs" (on various posts) maybe being the problem; in my case, though, the rebuilder ended up making some kind of "adjustments" to the valve body and this took care of the problem (car now has about 140,000 miles on it). In city driving I now stay in "D", which seems to deliver more precise shifting generally. My last car was an 81 Buick Regal with a Turbo-Hydramatic transmission (3spd.), and I just wish all transmissions were that smooth & reliable.
#60 of 2241 gas mileage by dmckeown Oct 06, 2000 (12:44 pm)
My 93 sle pulls 26 to 27 mpg mixed driving , about two thirds or so highway and the rest town driving . On a complete highway trip at 70 -75 mph she gets about 30 mpg . Car has 110 k miles on it and is just starting a slight shudder when lightly accelerating on highway without down shifting out of overdrive , oh well , I will watch and wait on this one to see if it gets worse . Tranny fluid changed at 50 and 100 k so that should not be a factor .

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