Once my car is up to normal engine tempature sometimes the engine makes a thumping sound/Vibration when I am stopped and at an idle. It seems like the engine almost wants to stall but it doesn't. Anyone have any ideas or similar things happen. Thanks!

 

Clean your TB, are your RPM's jumping around too?

 

I cleaned my TB and it didnt seem to make a difference, I am planning on cleaning it again to be sure i cleaned all the way around but I am pretty sure i did a good job. although I havent seen the rpm's really jumping around I will watch closely,but i have seen some threads on the rpm's jumping and i dont think i have the same issue. would rpm's varying 200 rpm be considered jumping?

 

Thumping sounds weird to me, not sure I udnerstand. Take the TB completely off and clean it thoroughly. Then spray the cleaner where the IACV sits, behind the right hand side (if your looking towards the IM fron the front of the car) of the intake manifold wall, behind where the TB was. This helped mine run smoother.

 

Coil packs

 

yes sir. that'd be it

 

jeez you guys with 99's sure have a hard time with those coil packs

 

lol yep, they suck soo much

 

yeah what's up w/ the 99's coil packs? bad design or something?

 

If I'm not mistaken they were made by a different manufacturer... and they came out pretty defective on most of them.. or atleast tend to have alot of problems.

 

funny '99 models have had problems w/ thier coil packs while '97s and some of us '98s had our alternators recalled

 

just curious whats to stop you from swapping to a say 95-96 coil pack or is that what you do?

 

I bought a used coil pack off of an org member a few months back, it was off of an earlier 4th gen (probably 95-97) and it worked perfectly.

 

Sounds like coil packs.

 

ya im getting that vibration too, its really annoying and when people are in your car there like "wtf is that noise", what are other symptoms of a bad coil pack? My engine doesnt misfire and everyhting is running fine