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Why do I hear a rattle or vibration from the engine area when cranked cold?

(1993 Pontiac Grand Am)
in Kansas City, MO on November 18, 2012
It seems to quiet down when the engine gets warmer.
Displaying 5 answers & 5 comments
Popular Answer
on November 18, 2012
something is probably loose...whatever size engine you have
on November 18, 2012
Yea i bet something is loose, but a quad 4 has a few things i may be able to help with.
on November 18, 2012
What engine? That is alwsys good to know!
on November 19, 2012
Quad 4 four cylinder. I think it could be bad motor mounts since it quiets down after engine gets warmed up good. Does anyone agree?
on November 19, 2012
Two things i suggest, listen under hood as soon as engine is started cold, timing chains make noise
when cold due to worn componets. Also check cat converter for defective catalyst, may not rattle when warmed up.
Motor mounts could be worn as well. But i am just guessing on all of this.
of Greg's Orange Auto on November 19, 2012
seek a diag and est from your mech as i would only be guessing
on November 21, 2012
Does the engine run rough on start-up? Is it a rattle or a vibration , that concerns you most? How does it change when you put it in gear? --When cold , then when warmed up? ..... More than one problem.......
on November 21, 2012
Hi zip i have a problem i will post the question think about it and see what you think 02 Civic sedan 1.7.
on November 21, 2012
Hope the response helped , I replied before I saw this response>........never mind!
on July 27, 2013
quad 4s were always bad for timing chain noise
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