check engine light on and miss firing in coil set. we must change total coil set

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Hi, in my car(1999 chevy malibu,4 cylinder) check engine light is on, and it is shaking when car is started & drive with lower than 20Mph. when i shown to some of known mechanics they said problem in coil set & i must reply the hole set because in my car have total 4 coil in one set. Can you please help to solve the problem it's great help to me. Thanks in advance regards Vijay 5103632852

vijuureddy in Fremont CA

Oct 15, 2014

3 Replies

Popular Answer

pushrodon Oct 15, 2014

The coil 'cover' is what carries voltage from the coils to the spark plugs... I have had a lot of problems with this part!... It can be removed and visually inspected for any burnt spots or discoloration along the voltage grids... This is not always the case but I have more trouble out of this part than the coils themselves... **This is just another area to check into!** Below is the NAPA part; Ignition Coil Housing Cover $ 46.99 /ea Part Number: ICA101SB Product Line: Mileage Plus Electrical IMPORTANT INFO: Cover

vijuureddyon Oct 15, 2014

Thanks for your valuable reply, if i change only Part Number: ICA101SB is it ok & shacking will stop?? i don't need to change part: ACDelco D1975F GM. Can you please suggest me any good mechanic. Thanks a lot.

pushrodon Oct 15, 2014

I cannot help you here!!... As stated, that part is not always the cause of a misfire! It was a suggestion as to another possibility for your trouble and one I see quite frequently!!!... I can not say if it is the trouble or not!... BTW.... There are (2) coil 'packs' on this engine, not (4) coils! Good luck with the fix!

vijuureddyon Oct 15, 2014

Can please send me the suggestions & guidance to my personal mail id vijuureddy@gmail.com Thanks

pushrodon Oct 15, 2014

Find someone that can check this out for you... It is easily tested to find out what the problem is!!.. The complete coil assembly does NOT have to be purchased, it is made up of different componets... Anyone can tell you just to replace this or that and may do so.. Without testing it usually leads to unnecessary parts installation!.. Ask around for a reputable local shop!

Reply in Thread

Hal Dortonon Oct 15, 2014

Search out RepairPal for some good shops in your area. These coil packs go bad and need to be replaced but we need more info before we just replace a part. A misfire can be caused from spark, fuel and compression and you need all three for the engine to run correctly.

Matt Grossoon Nov 18, 2014

just a test (this will be deleted)

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