Car shaking under WOT
05-13-2008, 09:45 PM
#1
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Car shaking under WOT
I did a few hours of tuning last night and I was getting very close to nailing my AFR...then it happened. During a 2-3 pull, after i shifted into 3rd, at 5 thousand rpms my front end started shaking, almost like my engine was moving back and forth. So I tried it again and same thing over 4 thousand rpms the car shakes. I checked all of my mounts (including the driver side tranny mount) and they all seem intact. I torqued down my lug nuts and tried again. Same result. During normal driving the bumping is non-existant even up to 100mph. Once I go WOT it happens. The rpm and speed climb like normal it just shakes like hell. WTF?
Recent mods: Larger throttle body, coilovers.
Recent mods: Larger throttle body, coilovers.
05-13-2008, 09:48 PM
#2
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Id have to say it might have something to do w/ the coil overs. As far as what I have no idea, but its definately not normal. Maybe you need to tighten your engine mounts, as at WOT your stressing too much, and messing something up.
Im only guessing, Im sure someone else probably knows better
Im only guessing, Im sure someone else probably knows better
05-14-2008, 12:07 AM
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The coilovers have been in for about two weeks now, this is all of a sudden. Any other suggestions?
Bump
Bump
Last edited by cobaltBlackss; 05-14-2008 at 12:07 AM. Reason: Automerged Doublepost
05-14-2008, 08:33 AM
#7
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Heres a few guesses for you.
clutch chattering.
Slipping under load slightly and grabbing again.
Bad cv joint(axel)
You wouldnt be getting wheel hop would you ?
clutch chattering.
Slipping under load slightly and grabbing again.
Bad cv joint(axel)
You wouldnt be getting wheel hop would you ?
Problem not solved, even after a new transmission. Has anyone's wheel speed sensor gone out before?
05-18-2008, 11:23 PM
#10
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One plus
A new tranny !
Im still going with a bad Cv joint.
When mine went on my other car, I could accelerate slowly but any harder and the car felt like someone was using a jackhammer on it.
A new tranny !
Im still going with a bad Cv joint.
When mine went on my other car, I could accelerate slowly but any harder and the car felt like someone was using a jackhammer on it.
Last edited by Coblasts; 05-18-2008 at 11:24 PM. Reason: Automerged Doublepost
05-18-2008, 11:27 PM
#11
i would also say cv joint. you'll only notice it on hard acceleration, it will go away when you're coasting, and won't be noticeable on slow acceleration. if those are the symptoms, i can almost guarantee that's what it is. a good test for this is get rolling, put the car into 4th or 5th (at a low speed, maybe like 30mph) and hit the gas. this will put alot of load on the car, and if it shakes like a **** that's a good sign that the cv joint is shot.
05-19-2008, 01:21 PM
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^^^ thanks for the input guys, those are my exact symptoms. The shity part is that I have the upgraded half shafts so I'll have to get it sent off once they figure out which cv joint it is.
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