Engine Missing out
11-13-2007, 10:20 PM
#1
Thread Starter
Join Date: Oct 2006
Location: Oklahoma
Posts: 27
Engine Missing out
Help! I have an 02 GT w/ 105k miles. Recently the engine has been missing out. At first I thought it might be water in the gas. But after 2 bottles of Heet, no difference. I also replaced the fuel filter with no difference. The spark plugs were replaced earlier this spring (about 10k miles ago). Also, it's intermittent. There's no check engine light either. Could this possibly be a vacuum leak? Or maybe an ignition coil? I'd like to avoid getting raped by the dealerbut I don't knowof anything else I could check without placing this on a diagnostic machine.
11-14-2007, 06:34 PM
#4
Thread Starter
Join Date: Oct 2006
Location: Oklahoma
Posts: 27
RE: Engine Missing out
Yeah, I have a coworker that hasa leftover set of coils from a Mark VIII. I'm not sure if they're the same though. I'll find out tomorrow and see if that's the problem. The real challenge will be diagnosing if that is in factthe problem, and if it is which coil is the culprit, since this occurs intermittently.
11-14-2007, 07:09 PM
#7
Thread Starter
Join Date: Oct 2006
Location: Oklahoma
Posts: 27
RE: Engine Missing out
ORIGINAL: dtkikols
MSD coil packs are about $390
MSD coil packs are about $390
Think I'll stick to the used set from the Mark VIII (provided they fit). I just hope I don't inherit another bad one from the used set.
11-14-2007, 07:25 PM
#8
3rd Gear Member
Join Date: Apr 2007
Location: Omaha
Posts: 640
RE: Engine Missing out
My engine had the same problem with 98,000 miles. I replaced the coil packs and the problem is gone. I'd stick with Motorcraft. My mechanic/tuner said he's seen cars lose power with Granitelli coils.