1993 Mitsubishi Mirage, strange sound

Joined: Mar 14, 2007 Posts: 1

Ok, this is a 4 cyl, manual transmission. It has recently started making some kind of grinding noise, similar to a bad rotor, but intermitent. It only makes this noise while moving forward, under acceleration. If I push the clutch in a roll down a hill, the noise stops, the second I release the clutch and accelerate, the noise starts again. The noise gets faster and louder as speed increases.

I've had a couple ideas thrown at me as to the cause, inner cv axles, and a bad motor mount. I have a sneaky fear it is a bad transmission, and was hoping to get some opinions before I start throwing money at it.

Thanks for any help you may offer

External Since: May 02, 2005 Posts: 315

"nina" wrote in message

> Ok, this is a 4 cyl, manual transmission. It has recently started
> making some kind of grinding noise, similar to a bad rotor, but
> intermitent. It only makes this noise while moving forward, under
> acceleration. If I push the clutch in a roll down a hill, the noise
> stops, the second I release the clutch and accelerate, the noise
> starts again.

A not uncommon problem that does this is the final drive (differential)
bearings. Does it grind in reverse too? For a 93, its probably not worth
fixing the trans (though its not difficult), just get a decent replacement
from a wrecker. Yours is either an F5M21 (4G15 engine) or F5M22 (4G93
engine), and is the same as fitted to the 93-95 Eagle Summit coupe and Dodge
Colt sedan.

Other possibilities are
- front wheel bearing(s)
- front or rear engine mount broken. Get a decent spare from a wrecker for
maybe $20 each, or pay $100 or so for a new one.

--
Stewart DIBBS
www.pixcl.com/lancerproject.htm