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Pontiac Bonneville Engine Surging Problems

22 messages,  Last post on Nov 20, 2009 at 7:30 PM

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#11 of 22 Re: car bucks like a mule [imidazol97] by gmonly4me Jan 25, 2008 (10:31 am)
Replying to: imidazol97 (Jan 24, 2008 5:03 pm) Hi again,I changed the coil packs and runs fine( 11.00 dollars) and yes it does do it in 3rd gear, but not in 1st or 2nd, so I'm thinking TCC is culprit. Would new trans filter and fluid with a Lucas tranny adative help this or should I think of installing the crank and cam sensors which is not that big of a deal for me.Oh yes, it seems that when I unlock the convertor via brake switch or adding throttle it doesn't seem to have these symtoms of surging or bucking. It certainly is intermittent so is not a major problem but would be nice to have car run like it should. By the way, I did a road trip last week of approx. 1800 miles and averaged 28 miles per gallon Canadian so the tune seems good. Thanks again for your help. Best regards Replies to this message: azu (Jan 25, 2008 1:18 pm)
#12 of 22 Re: car bucks like a mule [gmonly4me] by azu Jan 25, 2008 (1:18 pm)
Replying to: gmonly4me (Jan 25, 2008 10:31 am) Sounds like it could be as simple as a loose or broken vacuum hose going to the TCC Solenoid. If the hose is fine then perhaps it's time for a new TCC Solenoid. Good luck, these types of problems can be tricky to solve.
#14 of 22 tps voltage by gmonly4me Feb 09, 2008 (3:54 pm)
what are the voltage readings for 1992 SSEi, I,m checking the readings to determine if the tps is no good.thanks
#15 of 22 weird problem need help! by doyle64 May 04, 2008 (6:30 pm)
Here it is..I have an 03' Bonneville SE and when I put it in reverse (only when it is not hot) it surges a lot. It doesn't surge in RPM's but you can really feel it surging in the engine. It will also do it when i am driving around 40ish and keep it at 1500. I was told that it probably wasn't tranny failure per se because once the car is warm it doesn't do this. I'm just looking for some answers.
#16 of 22 Surging while in Drive but stopped by asosocargirl Dec 30, 2008 (9:02 am)
I have a 98 bonneville, I just replaced the upper intake over the weekend, But now while at a stop light my car surges, If i shift to N, the surging stops somewhat, Is there something I missed while changing this out. Has anyone had this problem. Replies to this message: imidazol97 (Dec 31, 2008 7:15 am)
#17 of 22 Re: Surging while in Drive but stopped [asosocargirl] by imidazol97 Dec 31, 2008 (7:15 am)
Replying to: asosocargirl (Dec 30, 2008 9:02 am) You might have a vacuum leak somewhere. Check your hoses and connections involved with the UIM replacement. Look for rotted areas in hoses near the ends that might have cracked from moving them or stretching them.   You may have to clean your MAF or IAC if you didn't do that while the throttle body was off.   Check your screws holding down the UIM but don't overtighten them. They're supposed to be some low amount of inch-pounds--I'm thinking near 90 but don't trust my number.   Did you put both o-rings on the PCV valve. One at the top and one on the bottom. If not it sucks a lot of air from the crankcase. With the motor running take off the oil filler cap and see if you're getting a noticeable large volume of air flow.
#18 of 22 Re: Engine Surging Issues [brumby] by cvs20 May 25, 2009 (6:06 pm)
Replying to: brumby (Mar 21, 2007 7:22 am) I have a 2003 SSEi with similar problem, but not quite so severe. I also noticed that downshifting to 3rd seemed to alleviate the problem. This does two things; 1) increases engine rpm and power curve usage, and 2) decreases supercharger boost (usually eliminates boost, ending up somewhere slightly on the vacuum side of zero).   I found out it had a leaking lower intake manifold gasket. When boost was positive, oil, water and air could leak out slightly, due to the pressure, confusing the engine control module.   Fixed the gasket and the surge went away !
#19 of 22 very quick surge by kyle120 Jul 01, 2009 (4:12 pm)
I have a 2000 Bonneville with 130k miles the last couple of months it started this surging thing when on the highway at speeds of 75 mph it feels like I have ran over something in the road but there is nothing there. The problem comes and goes with no apparent pattern I'm not sure if i would call it a surge or a drop in rpm but it is very fast, fast enough I dont loose any speed sometimes it will do it a couple times in a row and is getting progressively more frequent. I put about 60 miles on this car a day. There is no code coming up in the computer, but the service engine light has come on a couple of times but of course goes off by the time I get to the shop. I have heard that it may the the mass air flow sensor or possible the fuel pump the techs i have talked to think that it is the transmittion but sometimes the car will do this at idle as well it comes really close to dying but revs right back up. I have looked at the mass air flow sensor and there doesn't seem to be any dust or anything on it any ideas? A new mass air flow sensor is $150 . As to any more clues I can provide the only other thing i can think or is that most of my gauges seem to not work very well or be slow. The oil pressure gauge only moves a little bit when throttle is applied and is always above 40 and the fuel gauge doesn't work very well ether I put $10 of fuel in the other day at empty and it said i had over half a tank which i know to be wrong. Any feed back would be helpful THX Replies to this message: danthemandawg (Nov 18, 2009 3:55 pm)
#20 of 22 2001 Bonneville Surging/Backfire by jhardy3 Sep 15, 2009 (11:50 am)
I have a 2001 Bonneville and I have been having a tough time trying to figure it out. In the mornings when I start it when it is 50 -55 deg, by the time I get 1/2 mile away from home, it starts to surge and backfire with no acceleration. If I park it and let it warm up, it runs fine the rest of the day including when I go home in the afternoon. It has done this 5 or 6 times already and all have been in the morning when it hasn't been run in 10-12 hours. My local shop hasn't been able to figure it out, they have replace the crank & cam sensors along with the ignition module with no luck. A couple of times it has gotten so bad it had quit and I haven't been able to re-start the car for a couple of hours, but when it does restart it runs fine. Any help would be appreciated. Replies to this message: danthemandawg (Nov 20, 2009 7:30 pm)

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