North American Turbocoupe Organization



Are my U joints are going out??
JONESER Offline
Senior Member
#1
I noticed this Friday night.
It starts to vibrate at 50 MPH and up.
It feels like it's in the rear.
It's ONLY doing it when I'm on the gas, I let off going down a hill and it drives as smooth as it always did.
Could it be the U joints?
What about the balancer on the drive shaft?
I can't get under the car until tomorrow to check it out, so I was just wanting to get some advise from you guy's before tomorrow.
Thanks
JONESER
87 Turbo Coupe, 5-speed, boost at 18 PSI, K&N in finder, tangerine paint, shaved door handles, locks and emblems, painted interior trim(same as exterior), tiger print headliner, visors and door panels, Autometer gauges, 5.6" monitor & Playstation 2, lowered, white pony wheels...did I forget anything?
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Pete D Offline
Administrator
#2
Check the bolts holding the driveshaft to the
axle flange first

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88 TC X 2, 86 SVO, Main TC with K&N, 3"DP to 2.5"duals through Dynamax, Ric valve at 17+ and disconnected KS.
Elite Bodega 16" chrome wheels. Autometer pod w/ A/F and Vac/boost gauges. New engine: Total Seal rings and TRW pistons, ported and polished head w/ cc'd chambers,1.59"exhausts, SS valves, gutted upper, knife edged lower, A-230 cam, Race Engineering Adj Cam Sprocket, Crowlers, ARP head studs, and rod bolts. Walbro 190 pump and T-3. Centerforce II, KB subs and jack rails.
Pete Dunham


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JONESER Offline
Senior Member
#3
Thanks Pete,
I'll check 'em out tomorrow.
87 Turbo Coupe, 5-speed, boost at 18 PSI, K&N in finder, tangerine paint, shaved door handles, locks and emblems, painted interior trim(same as exterior), tiger print headliner, visors and door panels, Autometer gauges, 5.6" monitor & Playstation 2, lowered, white pony wheels...did I forget anything?
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JONESER Offline
Senior Member
#4
Well guys,
I got it on the lift today.
The drive shaft is OK, as is the balancer and bolts.
I did notice that the left front tire is worn REAL bad on the inside.
My boss said that it was probably the cause of the vibration.
I think it could be causing some of it, but I don't think that it would cause vibration worse when on the gas.
I rotated the tires and set the alignment.
Hopefully the tires I just put on front won't end up like the one I took off!
I'm gonna have to get 1 new tire.
Anyway, what else would make it vibrate when on the gas?
It rides smooth when I let off.
I checked the wheel bearings and they are OK too.
87 Turbo Coupe, 5-speed, boost at 18 PSI, K&N in finder, tangerine paint, shaved door handles, locks and emblems, painted interior trim(same as exterior), tiger print headliner, visors and door panels, Autometer gauges, 5.6" monitor & Playstation 2, lowered, white pony wheels...did I forget anything?
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