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Old 05-21-2012, 10:25 AM   #1
 
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Default 3.3 running rough

92 century. Saturday I did a complete TuneUp and brakes. Car ran perfect Saturday and Sunday. Today its running extremely rough at idle and when driving at lower rpms the car vibrates horribly. But if I raise the rpms it gets better and letting off completely it stops. Where the fuck should I even start?
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Old 05-21-2012, 10:30 AM   #2
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Detail exactly what you did in a "Complete Tune Up".

Coil pack/Dizzy/Cap/Rotor? O2s? Seafoam?
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Old 05-21-2012, 10:34 AM   #3
 
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All fluids and filters plugs wires 02s . Coil packs are only a few months old.
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Old 05-21-2012, 10:50 AM   #4
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All fluids and filters plugs wires 02s . Coil packs are only a few months old.
It was very nice the past few days, humidity spiked last night with the brief rain at least in my area.

Coil packs do have a high infancy death rate, and humidity will often bring out the worst in them if there is a crack etc, so that is a possibility.

Also check wires for burn marks/seperation
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Old 05-21-2012, 11:28 AM   #5
 
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OK thanks
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Old 05-21-2012, 11:42 AM   #6
 
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Sure you didn't crack the porcelain on one of the plugs?
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Old 05-21-2012, 11:44 AM   #7
 
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Will check that to. Way to tired right now though
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Old 05-21-2012, 01:12 PM   #8
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Cam position sensor. Get a reading go go go
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Old 05-21-2012, 06:25 PM   #9
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92 century? start by junking it

i'd check for vacuum leaks. all the vac lines are probably dry rotted, and you probably bumped one while doing your tune up.
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Old 05-21-2012, 06:30 PM   #10
 
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92 century? start by junking it

i'd check for vacuum leaks. all the vac lines are probably dry rotted, and you probably bumped one while doing your tune up.
And why the fuck should I junk it? I paid a grand for it and this is the first time its given me trouble. I've put over 20k miles on it. Driven to Iowa and back.
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Old 05-21-2012, 06:50 PM   #11
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you paid a G-note for a 92 century?
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Old 05-22-2012, 08:57 AM   #12
 
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you paid a G-note for a 92 century?
What's wrong with that? I got it with 54k miles



Finally went out and checked. Wire was resting on the o2 sensor. Archin like a mofo lol
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Old 05-22-2012, 09:01 AM   #13
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What's wrong with that? I got it with 54k miles



Finally went out and checked. Wire was resting on the o2 sensor. Archin like a mofo lol
anything that runs/drives is really worth a grand, so a 54K example of a buick is a pretty good pickup IMO...

Granted you couldn't pay me a grand to drive it

Glad you found your issue quickly!
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Old 05-22-2012, 10:31 AM   #14
 
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anything that runs/drives is really worth a grand, so a 54K example of a buick is a pretty good pickup IMO...

Granted you couldn't pay me a grand to drive it

Glad you found your issue quickly!
its ugly but i love it. seats are so damn comfy. and it has some good top end. ask your buddy s00ls my car walks him
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Old 05-22-2012, 03:07 PM   #15
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Old 05-22-2012, 04:08 PM   #16
 
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slowest race ever.
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Old 05-22-2012, 04:55 PM   #17
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this dude needs to calm down and make sure to double check his work.
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Old 05-22-2012, 09:26 PM   #18
 
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Really? Lol
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Old 05-23-2012, 07:23 PM   #19
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Did you fix it?
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Old 05-23-2012, 07:51 PM   #20
 
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Quote:
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Did you fix it?
Ya it was just a wire
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Old 05-23-2012, 10:52 PM   #21
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nice. I'm gonna have Tim swap out my front o2 sensor. I have no way to get under the car enough to get it and no real way to get at it from the top.
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Old 05-23-2012, 11:06 PM   #22
 
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Quote:
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nice. I'm gonna have Tim swap out my front o2 sensor. I have no way to get under the car enough to get it and no real way to get at it from the top.
Take off the upper dog bones, ratchet strap engine forward and watch your hands/wrists for the exhaust gasket between the downpipe and exhaust manifold. Should be enough room. Or atleast someone with smaller hands (no offense -don't know about yours) as mine are on the smaller side.
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Old 05-23-2012, 11:39 PM   #23
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Get that guy from Tale of the Crypt Keeper to wrench on your car. Could have all 3 rear plugs changed in 5 minutes without moving the engine.
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Old 05-24-2012, 12:09 AM   #24
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Quote:
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slowest race ever.
I thought that was a NA Sebring. HEYOOOOOOOOOOO!
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Old 05-24-2012, 01:23 AM   #25
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boom!
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