97 bonnaville surging with the torque convertor locked - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


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Old 05-07-2004, 01:10 AM   #1
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Default 97 bonnaville surging with the torque convertor locked

hey folks i am new here so bear with me love my bonnavile but it has had a surge since about 75,000 miles has 150,000 now and it gets worse with age you canonly fell it with light pressure on the throttle and the convertor locked it disapers after the convertor is unlocked i havehad to three dealers and its never fixed i thought it was a miss fire origanlly but i have replaced all of the ignition system also car has to be hot about 30 min of highway use before it starts any ideas thanksajax
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Old 05-10-2004, 01:12 AM   #2
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Describe the surging more in detail.
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Old 05-11-2004, 03:18 AM   #3
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The same is happening to my car too. I went to the tranmission shop today and they told me i had to replace the torque converter. Does it happen all the time while your driving ? My only does it when i'm on the thruway after the car is warmed up.
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Old 05-19-2004, 01:33 AM   #4
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Default Re: 97 bonnaville surging with the torque convertor locked

Quote:
Originally Posted by ajax
hey folks i am new here so bear with me love my bonnavile but it has had a surge since about 75,000 miles has 150,000 now and it gets worse with age you canonly fell it with light pressure on the throttle and the convertor locked it disapers after the convertor is unlocked i havehad to three dealers and its never fixed i thought it was a miss fire origanlly but i have replaced all of the ignition system also car has to be hot about 30 min of highway use before it starts any ideas thanksajax
You can fix this by putting a switch in line with the brake sensor to the computer.
This will fool the computer and TCC and the TCC will not be engaged.
This is good to use when you look at your boost and then deiced to engage the switch.
Otherwise just hit the switch when you want to hit the gas….
I have been doing this for over a year. Works Great.
As far is I know, talking to some mechanics it is the TCC solenoid.
Not easy to replace.
I have gone for VERY extended road trips up many mountain passes with the switch on for a long time...
Without any problems with my transmission.(even though there is a problem)
This realy works Great....
I hope this helps
You can look up my other posts to see more about this problem.

Oh! I did the same thing.
Replaced All most all of the electrical.
Then someone on this site told me to tap the brake.
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Old 05-21-2004, 07:27 PM   #5
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This seems to be a common problem, and so far no-one has a way to fix it.

Check out the following thread:

http://www.bonnevilleclub.com/forum/...asc&highlight=


My 92 has done this forever, and my 97 SSEi just started doing it occasionally when loading up in overdrive. NOOOOOOOOOOO.......
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Old 05-21-2004, 08:03 PM   #6
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My 97 SE started doing this on a road trip from Iowa to Vegas. After most of Nebraska had gone by in a 85mph blur , she started surging (both small ~100rpm bumps, and larger ~500rpm ones too). Started getting annoying on the uphill grades moving into the foothills in Colorado. Brought it to a dealer in someplace, whereeversville, and the tranny fluid was brown, so they flushed and new filtered it. Got better for awhile, then again on the way home (my girlfriend had toasted across western Nebraksa at 95+ while I was asleep ) it got pissy again.

Took it to the dealership where I'm from and they flushed it again. Then I got another ticket, went to driving school, got in trouble with my parents' insurance company-read drove slow for a year so I didn't lose my license and insurance. Anyway, with 70ish interstate speeds and no more 3500 mile trips the tranny has been fine for a year and the fluid was nice a pink, smelled yummy.

Then, about a week ago, I had to get back from Omaha real quick like, after about 30 minutes of 85-90 mph the surging came back . Gonna get another flush and add a tranny cooler soon.

From reading many posts similar, but older, than this thread I've decided that the problem is definitely tranny related not fuel or electrical, probably in the torque converter due to lack of problem when accelerating harder. Good, clean, cool tranny fluid helps as a bandaid, but the problem is probably in the TC or TCC solenoid whatever. Less monkey advice or tranny knowledge would be welcome here, I hope this thread continues for awhile as they have been several people with stock cars that need help with this, but not alot of advice from more experienced/knowledgable members as this doesn't seem to be a problem for already cooled and beefier trannies.
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Old 05-21-2004, 08:14 PM   #7
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well, my 97 SSEi just started doing the same thing, very mild though and only sometimes.

I had my 92 tranny flushed and it didnt do a thing for the surging. No mechanic I have been to knows what to do, and even the dealer just quoted me a new tranny.

Now I have been able to get it to happen in Drive as well. Lock it into 3, going up a hill and accelerate lightly without kicking down. So that would suggest that the TCC is not at fault here because thats only used for the OD. It seems like the TC is slipping and grabbing continiously, maybe thats it.

My 92 also makes a weird chirping noise as well. Almost like a plastic babies toy rattle.

one thing that is certain - when it does go out for good, that car is gone. No point spending $2K on a tranny when the car itself is only worth $1500

If I had a cheap fix, I would do it though. Any idea'* ?
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Old 05-21-2004, 09:16 PM   #8
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Quote:
Originally Posted by along
well, my 97 SSEi just started doing the same thing, very mild though and only sometimes.

I had my 92 tranny flushed and it didnt do a thing for the surging. No mechanic I have been to knows what to do, and even the dealer just quoted me a new tranny.

Now I have been able to get it to happen in Drive as well. Lock it into 3, going up a hill and accelerate lightly without kicking down. So that would suggest that the TCC is not at fault here because thats only used for the OD. It seems like the TC is slipping and grabbing continiously, maybe thats it.

My 92 also makes a weird chirping noise as well. Almost like a plastic babies toy rattle.

one thing that is certain - when it does go out for good, that car is gone. No point spending $2K on a tranny when the car itself is only worth $1500

If I had a cheap fix, I would do it though. Any idea'* ?

Ues the switch!
The price fot the TCC sol not including labor is to much.
And yes 3 gear has TCC LOCK!!
Not just in O.D.
Surprise!
That one stumped me for awhile too.
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Old 05-23-2004, 12:24 AM   #9
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my 97 riviera does this as well. On light acceleration you can feel a surge to it, and when the TCC locks up when accelerating it is a rough activation, doesn't feel good at all..
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Old 05-30-2004, 09:25 PM   #10
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my 97 ssei was surging just like you. On highway or uphills it would surge from 2100 to 2500 rpm'*. I fixed it by taking out my MAF sensor and spraying the two (black) wires inside it that measure airflow with CRC QD ELECTRONICS CLEANER. By the way the two black wires turned out to be two silver or chrome wires after the black **** dripped off . Then let it dry and put back in. While it was out I sprayed a bunch of throttle body cleaner into the opening towards the intake. Just be carefull not to get any throttle body cleaner on the MAF sensor it will ruin it , so Im told. GOOD LUCK
Let me know if it works.
P.*. My gas mileage went up to 26 MPG from 22 also.

total cost of fix about 5 bucks.
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