Engine Misfiring?

[Transbird3.4v6]

I'm havin some problems with my car...It rained here recently, and I hit a pretty good size puddle of water...but I dunno if that had anything to do with this, didn't start till after that. But it use to have a real rough idle, that has quit..oil pressure and etc dropped w/ the rpms..but that seems to have a cleared up...the car vibrates real bad at idle though, and around 12-1500 rpms..then randomly (usually at highway speeds) the car will begin to pulse in vibration. It also has a real bad unburned gas smell...No SES light on either. What can I do to fix this?

[ October 31, 2002: Message edited by: Transbird3.4v6 ]

[ October 31, 2002: Message edited by: Transbird3.4v6 ]

[ October 31, 2002: Message edited by: Transbird3.4v6 ]</p>

[Transbird3.4v6]

Well crap, no one lookin at my post :( ...I'm takin my car in to my HS auto tech shop, they'll let me hook it up on an Engine Analyser...guess ill find out whats goin on tomorrow, really hate to bother the instructer, real busy man [img]tongue.gif[/img]

[MEAN 98]

you might have cracked a plug when you hit that water

[pvtschultz]

This has happened a lot to us F-Body owners. The plugs on the 3.8 are not routed very effectively and have a habbit of getting burnt or dried out. When mine did it, no SES light was set except for the EGR coge that I am too poor/lazy to fix. I would start by replacing your plus and wires. Wires I have found are around $60 and the plugs vary. Try to do them yourself, or have a buddy help you. I was too lazy and wasn't sure what the problem was and had it done by a Pontiac Dealership....well $400 later it was fixed, but for a minor tune-up that is rediculous.

[Transbird3.4v6]

Well, mines a 3.4, but I'm sure there isn't much difference. I've changed my plugs and wires before..they are just a pain. Course thats cause I did them all from the top prolly...and like 4 are suppose to be taken out from underneath [img]tongue.gif[/img] anyway, thanks...Ill check that out...but first Im gonna see which hole(s) are missing, on the Engine Analyser...that way I dont have to pull all the plugs [img]tongue.gif[/img] hehe..Guess I'm lazy too [img]tongue.gif[/img]

[Transbird3.4v6]

Well my old instructer not in today, so no engine analyser for me, anyone know another method of testing which hole may not be firing, w/o pullin the plugs out and check each individual plug? [img]tongue.gif[/img]

[MEAN 98]

i hate to say it you might as well bite the bullet and go ahead and change plugs and wires.. maybe your instuctor will let you put it on a lift this will help out a lot... check out my new fire bird page in the sig .....later

[Transbird3.4v6]

no money for that, besides, they are new plugs and wires :( ..but I may have to resort to it :\

[ October 31, 2002: Message edited by: Transbird3.4v6 ]</p>

[NSolano]

make sure they are plugged in right then, go for the coils,w hich would suck if they were bad cause that is like 40 bucks for each.

[MEAN 98]

JEEEEZ

[Transbird3.4v6]

Well I fixed it, I had 2 wires that had holes shrug...they were arching