Owner reviews for ignition coil

They will fail eventually, always replace them with Motorcraft parts.

I read up some online and decided to order new ignition coils. Took a few days, but I got four new coils and threw them in. Again, problem solved it seemed. No more EPC light, misfire codes didn't come back and no more rough starts.

Be sure to use a genuine Bosch from a reputable source, or OE from the dealer. DO NOT use a Chinese one from a big-box auto parts store.

I was having hesitation problems a few months ago while accelerating. No CEL, and no codes with VAG-COM. I read here that a lot of other people had had identical problems; the CEL and codes didn't start appearing until well after the symptoms started. Changing the coils solved their problems. So I took the risk and changed all four coils (at about 65,000 miles). That completely solved the problem for me. By the way, the new OEM coils had a completely different part number than the original ones.

And, since the GM LS2 coils use a +5v sequencer trigger and they work perfect with an ME7 ecu, it seems like running a scope test is a bit redundant.

many thanks to this diy i just successfully replaced my unbranded made in italy POS coil with a brand new one from beru. gosh, as soon as i put that in and started the car it didnt start so rough. what a small but significant change, kudos and thanks!

after you check the dwell and all wiring looks good, it may help to switch to a different coil like the MSD Blaster 3.

Everyone swears the stock coils are great for 800hp because force fed did it. I don't care, the coils suck and always have. I always had random misfires here of there even when new, and I could never run the plug gap I run now with push downs or bolt downs on a stock car even without serious hesitation and enough to increment the misfire counter. This 190k mile Jetta did this also and I thought maybe carbon fouled plugs or a dying coil. Now it pulls 20 inches of vacuum with a rock solid needle at idle no bouncing, no hesitation. The car sounds absolutely different at idle, fresh plugs and a .040 gap, no other change but the coils and fersh plugs. It sounds throatier and crisper with the larger gap too.

Yep. The codes don't lie, the coil pack is bad. I swapped it into my wifes 04' and the CEL/ misfire was right there with it. The guy bought it somewhere local but doesn't have the receipt/ record, so he's out $175.

I ended up with this MSD when I bought Tim's motor and the MSD finally crapped out after about a year of me driving with it. In running a coilpack, I notice no tangible difference between the two. Yes, the MSD looks really, really cool...but if you ain't worried about looking pretty, spend your money elsewhere.