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RX-7 2nd Gen Specific (1986-92) RX-7 1986-92 Discussion including performance modifications and technical support sections. |
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#1 |
RCC Loves Me Not You
Join Date: Jul 2008
Location: Influx.
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More Vibration Woes
Simple questions I need an answer to. I have a non-violent vibration that is concerning me. While accelerating there's really no vibration until I get around 50mph or so. Once there, if I cruise at 50 the vibration is usually constant and feels like it's coming from the rear. The rear end also feels a little vague, but I've had the bushings replaced recently (within a year). When engine braking I get a stronger vibration that is not constant. Usually has a strange vibration pattern to it on top of the normal vibration.
Would getting an alignment help this situation. The car doesn't really feel like it's pulling any direction, but maybe the toe or camber has come out of spec on the rear? I believe this is a development from the previous vibration issue I had which turned out to be a siezed drive shaft. I've since replaced it and this is what's left.
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#2 |
Rotary Fan in Training
Join Date: Jun 2009
Location: Northern NJ
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How about a shot in the dark? Was the driveshaft checked for straightness and balance? Under acceleration/torque it wouldn't be as apparent as when its not under stress, i.e. coasting/braking. Best of luck!
parrotfever Bob
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1989 RX-7 convertible 2000 F-350 4x4 crew cab 2002 Altima 3.5 wife's buggy - 2004 Titan 4x4 crew cab |
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#3 | |
FUCK the fucking fuckers
Join Date: Mar 2008
Location: THE only Bay Area, Northern California
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+1 get under there and check the u-joints.
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#4 |
RCC Loves Me Not You
Join Date: Jul 2008
Location: Influx.
Posts: 2,113
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It's brand new. IE: Direct from MazdaTrix
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#5 | |
FUCK the fucking fuckers
Join Date: Mar 2008
Location: THE only Bay Area, Northern California
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double check, just in case. HOw are the bearings?
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#6 |
RCC Loves Me Not You
Join Date: Jul 2008
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Last I checked they seemed fine. I'm debating on if it might be the transmission on its way out or not. I'd know more once I got it aligned and they said yay or nay on it. (Free alignments from firestone ftw!)
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#7 |
crash auto?fix auto
Join Date: Feb 2008
Posts: 816
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Wheel bearings?
Rear end bearings? Wheels and tires? (for some reason no one ever seems to check those ![]() What kind of engine and trans mounts are in the car? |
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#8 | |||
RCC Loves Me Not You
Join Date: Jul 2008
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Were good last checked (around the same time as the shaft was replaced.
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Engine mounts are the MS ones. So only 50% stiffer than stock.
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#9 | ||
crash auto?fix auto
Join Date: Feb 2008
Posts: 816
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Yep. There's several ways to check, the quick and dirty is the same as any bearing really - feel for play. Quote:
I see, was mostly curious if they were solid or not, solid trans mounts will shake your balls off.......in a bad way. |
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#10 | |
RCC Loves Me Not You
Join Date: Jul 2008
Location: Influx.
Posts: 2,113
Rep Power: 19 ![]() |
Quote:
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