Question about 2003 Chevrolet Cavalier
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Posted on Jan 02, 2017
I am familiar with that vehicle but generally with timing chain replacement, the engine needs full access for pulley and cover removal and in some cases the cylinder head requires removal.
Generally timing chains last so that they only need replacement at engine overhaul and it is not an economic proposition to have to replace a chain unless some relative degree of engine work is also required at that time.
Engine timing chains generally have a tensioner on them which maintains tension, but some chains can wear significantly and cause timing cover to be "ground away" because of "slop".
If the engine is making the noisy rattle of the timing chain against the cover etc, I would schedule a top overhaul (head, machine, test and valve grind) with the chain replacement dependent on mileage with the degree of action.
Some simple simplex timing chains (type of chain similar to motor bike chain) may be replaced without dismantling the engines but I would expect your chain would be a "duplex" dual sprocket type, these are most common.
These chains are not generally expensive but replacing them can involve a fair amount of work.
Good Luck and hope this helps, Others will have different ideas.
Posted on May 04, 2009
Hey, did you ever figure this out? Ever consider swapping PCM's for a newer 04 PCM that would be tuned for this engine?
Posted on Jun 25, 2009
Just the guide is probably making the noise. So either a new guide or a new chain. I would start with guide first, unless chain looks loose or cruddy
Posted on Sep 16, 2009
the timing spec is 0degrees at idle, also heres adiagram for timing chain, check oil preasure switch connection and wiring to control module.hope this helps.
Posted on Feb 19, 2010
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