I need some help here guys, my car has just had a built motor installed with APS TT. Its running uprev for the tune but keeps blowing coil packs when the car is just idling ??

The shop who built the car is working on it but if any here could throw up some ideas on this that would help me hugely!

 

A short in the harness is my initial guess, but we'll probably need more info to really help.

 

I dont really have any more info as yet but the car was ideling while they bleed the coolant and after about 1 hour it started to missfire and started blowing coil packs????

Thanks for any help.

 

The car idled for about 1 hour while the coolant was bleed and then it started to miss fire and started blowing coilpacks.

Any help is great.

 

mine did the same thing, i fixed it by parting it out and selling it. most who looked at the car, thought there was a short in the harness but no one knew for sure. have you see a U1000 code being thrown?

sorry to hear and best of luck

 

check your grounds around the motor and make sure they are tight

 

+1 on grounding. Pull and retighten and reseat the cable to/from ECU even?

 

Even if the grounds look tight, loosen and re-tighten anyway.

 

Thanks for the help guys.

so far problems could be:

Fault with the ground on the wire harness?
short circuit due to pinch on the harness?
faulty coil packs? Unlikely because these packs ran fine on the motor before.
problem with the ECU uprev system??

Any more ideas people? This is going to **** me off really badly because im not going to be able to pick my car on the 15th because of this!!

 

the coils only ground thru 1 wire. it would take a second to put a meter on that and see if it was open or not.

 

have you tried other engine management, like haltech?

 

Thanks for they responses guys. I know this is a far out question to try and diagnose with very limited info but the shop that is building the car just said there having some problems so i got off the phone and let them keep working.

Going through things in my head i cant see it being any thing other than a ground fault or short circuit due to the harness being pinched. (Could it be the main harness block that goes into the ECU too??)

One other thing to mention is Im running a boost controller with a built in turbo timer. Im not sure how this is wired into the car but the turbo timer side may be connected to the ignition system??

Any ideas??

Ill ring the shop tomorrow afternoon and let you guys know if we worked the problem out.

 

Just had an email from the shop saying the have fixed the problem! They think it was down to a poor connection on the ground clip.

Thanks for all the help guys! I hope that was all the problem was.

 

sorry to bring up old thread but im having similar issue, which ground clip?

 

its the small wire that grounds on top of the front timing cover