PontiacBonnevilleClub.com

Hello,

2001 Bonneville SE.

At 112K miles I had the trans rebuilt.

I'm at 214K miles now and I feel it slipping when I'm in high gear when I want to accelerate.

Nothing from a standstill.....only in high when, for example entering freeway...cruise set and creeping up a hill etc.

I just put 3 new coils and an ignition control module in thinking it was a miss-fire.

Is there anything I can do other than a full teardown?

Is it slipping or do you have erratic RPMs going up and down and bucking a little bit?

I guess more like bucking.....

nos4blood70 wrote:Is it slipping or do you have erratic RPMs going up and down and bucking a little bit?

So yes..it's bucking and the RPM's are erratic.

What are your thoughts?

Thanks

99% of the time, your symptoms are ignition issues under load. I know you've replaced the coil and ICM already. Do you have a way to watch live data with a scan-tool to determine which cylinder is misfiring? It wouldn't hurt to change the plugs and wires also.

I would change plugs and wires as stated above. I've also had a dirty MAF cause similar situations.

Regarding dirty MAF......I assume there is a special cleaner for this.

Can I spray it on the vehicle or do I need to remove it?

Thanks

Yes, there is a special MAF cleaner and, yes, it's kinda pricey. I think it might be easier to clean with the MAF removed.

You can get the MAF cleaner at any auto parts store. Remove the MAF and spray it down.

It was my plug wires!

Or my MAF...I cleaned it to.

Thanks for your help as always....