Please Help!....Coil Pack Problem? Runs very rough! UPDATE
I have searched and searched through old threads to try and find an answer... but I can't find what I'm looking for, and I'm frankly tired of searching without finding out an answer to the same problem from other people...... they just don't post what the solution was once it's fixed for them... or they gave up.
To start things off, my '98 cobra was running pretty good last week.... or so I thought. I was driving down the road a few days ago, and check engine light came on and the car started running rough.
Could not accelerate normally, feels like its hesitating and does not want to accelerate for anything. Rough idle as well. The exhaust definitely smelled of gas before (and now) but I thought that was normal since I just purchased this car and had no idea that it's a sign of the fuel not completely burning due to most likely misfiring or not enough spark?.... I'm an avid sport atv rider, so smelling gas from exhaust is fairly normal for me. Also noticed that it looked like my a/f ratio gauge was reading pretty rich. Had my buddy hook up a scanner which stated a misfire.
Well, I replaced all the spark plugs..... still ran rough.
Replaced all the plug wires with new NAPA wires.... starts up quicker than before, but still runs rough.
I really thought that after the plugs and wires, I was going to be good to go. Unfortunately that wasn't the case. I was thinking my problem may lie with the coil packs, but I want to test them before I spend more money just to find out that it wasn't the problem.
Do you guys think that it is the coil packs?
If so, how do I test them with a voltmeter? I have never used a voltmeter but I have a family member coming over with one.... however, he doesn't know how to test the coil packs with it. Can someone elaborate on how to test them? Also, will testing them give me an answer, or is it something that needs to be tested under load?
I really want to get this thing running smooth again... I really appreciate any and all help! Thank you.
1998 Laser Red Cobra
1999 F-150 LARIAT
Last edited by laser red venom; 06-09-2009 at 01:12 PM.