I have a bad vibration when decelerating at about 40 mph or more. The car runs smooth otherwise. Any ideas? I just purchased the car and it has a rebuilt motor and a float a motor.
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I have been in many A's that do the same thing including mine. decell only, it goes away on accel3~ Tudor's & 1~ Coupe
Henry Ford said,
"It's all nuts and bolts"
"Start by doing what's necessary; then do what's possible; and suddenly you are doing the impossible."
Mitch's Auto Service ctr
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the float mounts can be subject to vibration. Miles insisted on them for his car, but soon removed the front due to vibration, and went back to the yoke mount, problem solved. He had been cautioned by other club members about this, but wanted to try it
Also, for either type mount, if your rear mount bolts are even a little loose, you will get decel vibration
I had that happen to my '31 Deluxe Touring with OEM mountsLast edited by tbirdtbird; 02-02-2018, 11:08 AM.
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I have OEM on my cars too.
arvon read this FAM thread especially MIke K's post #18 reply.. This is from the tech forum
FAM tech thread
3~ Tudor's & 1~ Coupe
Henry Ford said,
"It's all nuts and bolts"
"Start by doing what's necessary; then do what's possible; and suddenly you are doing the impossible."
Mitch's Auto Service ctr
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Probably that flinky tail pipe hanger!!!
Use a universal rubber strapped hanger.Last edited by BILL WILLIAMSON; 02-02-2018, 02:44 PM.
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One thing to try is John Deere Corn Head grease in the U-Joint. Conventional grease too thick and does not flow well after it is thrown off by centrifugal force. Several of the fellow A owners in my area have tried the corn head grease and have noticed an immediate decrease in the deceleration vibration. Of course if the U-Joint is worn out no type of lube will help. I don't think I have ever driven any A that did not have at least some vibration or resonance during deceleration.
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Originally posted by arvon View PostThis is not my first model A but it is the only one that vibrates that bad. My 28 with solid motor mounts is much smoother.
If not, then it sure would seem to be a driveline problem, and I wouldn't overlook the nuts coming loose on the double pinion bearing.
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I ALWAYS worried about those nuts. What a CRUDE method of tightening them!
"ALMOST" like Cave Man Skills----------Ever have a rear end LOCK up, while buzzing down the road?---Just KISS it "GOOD BY"!Last edited by BILL WILLIAMSON; 02-04-2018, 11:25 AM.
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