why do I hear a rattle or vibration from the engine area when cranked cold? on 1993 Pontiac Grand Am

It seems to quiet down when the engine gets warmer.

by in Kansas City, MO on November 18, 2012
5 answers 5 comments
ANSWER by , November 18, 2012
What engine? That is alwsys good to know!
COMMENT by , 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?
COMMENT by , 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.
ANSWER by , November 18, 2012
something is probably loose...whatever size engine you have
COMMENT by , November 18, 2012
Yea i bet something is loose, but a quad 4 has a few things i may be able to help with.
ANSWER by , November 19, 2012
seek a diag and est from your mech as i would only be guessing
ANSWER by , 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.......
COMMENT by , 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.
COMMENT by , November 21, 2012
Hope the response helped , I replied before I saw this response>........never mind!
ANSWER by , July 27, 2013
quad 4s were always bad for timing chain noise