I got my maruti suzukizen
car's (1000cc 4 cylinder front wheel drive) clutch assembly over hauled
two days back. After that I amexperiencing a full car vibration that I
can feel (assume) as it isfrom the front part of the car when engine is
loaded. I mean if I amaccelerating, I can feel the vibration and
everything settles down tobe smooth once the clutch pedal is pressed
(no matter what ever therunning speed is). It seems the vibration is
directly proportional tothe Engine RPM and also only when the engine is
loaded. The mechanic who overhauled my clutch assembly tells that it
isbecause of the drive shaft problem. Then my question is how it come
allof a sudden and not when clutch pedal pressed? Please give me
asuggestion.. J John
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Re: Wobbling of car while accelerating
The u joints in the drive shaft. (CV joints on front wheel drive) more strss on the joints when accelerating so they cause the vibration. no stress/load smooth run. Replace the joints and you'll feel a big difference.
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wobbling from the rear end can be from worn suspension rubbers in the control arms. Normally it is from belt separation in the tyres and bulges in the side walls
I take it that it is a front wheel drive with no diff action at the rear.
another point may be that the rear brakes are grabbing ( out of round drums or warped discs) that is causing the vehicle to react as if the rear is loose.
Check your universal joints, as well as your wheel bearings and play in your front wheels. If your pitman arm, idler arm, or tie rods are worn the initial acceleration will cause a shaking feeling because the tires are wobbling.
The Universal joints are a big problem as well, and you should check them before its too late. If one breaks you can damage your drive shaft when it hits the road.....Let me know what you find.
Possible the faults can be related to the following:
1. check the clutch settings- if the clutch is slipping this noise can come up. release the clutch very slowly and check if the noise reduces.
2.Possible that the drive links, the drive shaft , bearing assembly is faulty.
3. Possible there is loose linkages on the brake assembly which could get into the movement of the wheel and make noise.
4. The noise can be within the engine, possible that the belt slipping, water pump bearings, alternator bearings or idler units.
It sounds like you need to have the wheel bearing replaced. If you do one, have the other done as well, and have them (if 4 wheel drive) check the u-joints on the front end as well. It could be this too.
You need to remove the transmission (and transfer case if its 4 wheel or all wheel drive) to access the clutch assembly. Be prepared to replace the clutch disk, pressure plate, thrust bearing, throwout bearing, and in your case since its a Ford/Mazda the slave cylinder and plastic line to the master cylinder. A very big job for the do-it-yourself-er.
It does not seem that sufficient diagnosis was done. No, you cant give a specific diagnosis like that without tearing unit down. It's likely that they told you the most common failure and left it at that. Likely there is a problem with your unit...I think this becomes more of a trust issue than a mechanical one. A second opinion from an independent reputable shop may help but either way, you need to have it fixed. In not using it much, it makes me wonder how it got worn. good luck