1997 Geo Prizm Vibration

1997 GEO PRIZM
212,000 MILES • 4 CYL • FWD • AUTOMATIC
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KDOTHUSKER
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  • 1 POST
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.
Aug 24, 2009 at 3:16 PM
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MHPAUTOS
  • ✓ASE Certified Mechanic
  • 31,937 POSTS
  • ASE Certified Mechanic
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)
Aug 24, 2009 at 5:40 PM
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BLUMONSTER
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  • 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.
Sep 3, 2009 at 4:35 PM
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MHPAUTOS
  • ✓ASE Certified Mechanic
  • 31,937 POSTS
  • ASE Certified Mechanic
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
Sep 3, 2009 at 6:15 PM
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