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1997 Geo Prizm Vibration

Tiny
KDOTHUSKER
  • MEMBER
  • 1997 GEO PRIZM
  • 4 CYL
  • FWD
  • AUTOMATIC
  • 212,000 MILES
My daughter's 97 Geo vibrates badly when idling either in gear or in park. The vibration quits as the engine is revved up. Any idea what may be causing the vibration? Thanks.
Monday, August 24th, 2009 AT 3:16 PM

3 Replies

Tiny
MHPAUTOS
  • MECHANIC
  • 31,937 POSTS
Hi there,

You may have a low speed miss fire or the idle is way to low, start with a tune up first and do a scan to check for any unresolved fault codes, and as a precaution check all engine & transmission mounts, start here.

Mark (mhpautos)
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Monday, August 24th, 2009 AT 5:40 PM
Tiny
BLUMONSTER
  • MEMBER
  • 46 POSTS
My car is a 94. Spark plugs, wires are new but they did not solve the problem. Is it possible to visually diagnose if the issue results from mounts? Just by looking at- and if reachable- by feeling them?

Thanks.
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Thursday, September 3rd, 2009 AT 4:35 PM
Tiny
MHPAUTOS
  • MECHANIC
  • 31,937 POSTS
You need to place a jack under the sump, use a block of timber so not to do any damage, and take the engine weight slowly, check to See how much movement there is in the mounts.

Mark
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Thursday, September 3rd, 2009 AT 6:15 PM

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