Question about Cars & Trucks
The engine vibrates hard and when I asked the dealer they said it was a factory problem with the harmonic balance. I took it to my mechanic who looked it over and said it was the motor mounts. who is correct? I don't see any issues regarding the harm. bal. anyone have any ideas?
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Posted on Jan 02, 2017
I don't think so.They seem to be on top of the situation more than the dealer for 1 thing.For vibration,I don't really think a compression test would show anything.That would be more of a loss of power issue.If that shop did not think the other 2 mounts were bad enough to require replacement,the answer is probably somewhere else.If this is an automatic,when do you put it in neutral?At lights or long stops?I would like to know the answer for that please.It could just be the age of the car and normal wear and tear is causing it but if the vibration is bad enough to post here,there could be something.I have a 1995 Escort wagon with 135k miles and it shakes a little bit.Anyhow,just comment here and I will get an aoto link back here to see what you said.
Posted on Aug 28, 2010
SOURCE: I've changed my engine mounts 3 times on my 2004 A4 cabreolet and they fail within miles(start to vibrate & then within a week, severe knocking) the 2nd time, also changed the ****** mount, 3r
Engine mounts do not go bad in five miles. Sounds like you're treating a symptom and not the cause of a more serious issue. Are you sure all cylinders are firing correctly? That the severe knocking is not coming from your engine internals? Have you checked the steel around the engine mounting points for cracks or other damage? And just in case, if the mounts you are using are poly, are you lubing them before installation?
Posted on Sep 03, 2012
SOURCE: FRONT END VIBRATION
The dealer is not going to replace something if they can not prove to the company the part is defective. The company won't pay the warranty claim.
A bent axle was my next guess. A garage could find out by using the same dial indicator used to check for a bent rim.
The dial gauge is placed against the shaft and the wheel is turned, if the axle is bent the dial will move.
I don't know what Road Forced balanced means, but most balancing machines duplicate road speed of about 30MPH. So a tire or wheel can balance ok on a machine but still have a vibration at speeds above 30 or 40mph. The easiest way to make sure is move the front tires to the back and see if the vibration travels too.
If you are describing the problem correctly, it almost has to be in the transmission, the axles, or the wheels. There is a slight chance a strut or strut mount could be faulty and allowing a small bounce to be amplified.
Posted on Sep 16, 2012
have you done any other work, trans mount, recheck all bolts, exhaust has its flex pipe? I may be wrong but front and rear mounts are sloted are they set properly, also top side mount have two big washers or insolators on each side are there missing? this will cause a vibration. good luck
Posted on Oct 10, 2012
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