Changing Timing Chain on 1994 Fleetwood

GERRAF

MEMBER
1994 CADILLAC FLEETWOOD
V8
2WD
AUTOMATIC
185,000 MILES

When should timing chain be changed on a 1994 cadillac fleetwood. I have 185,000 miles on this car, and timing chain has never been changed. It has hesitation, and has shut down completely. So I would change the distributor, Optispark, on it, and it runs for a while, then I have to replace the optispark again. Could my problem be the timing chain? Does not show trouble lights.

2 Replies

AUSERNAME123456

MEMBER
106 POSTS

It would be wise to change it now before it jumps time and does more damage to the engine. If it has not been running right this could fix it.

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Tuesday, August 2nd, 2011 AT 2:02 PM

FACTORYJACK

MECHANIC
4,159 POSTS

There is no interval for timing chain replacement, and I am not sure if that is a nylon coated cam gear, that would make it more appealing to change. As far as the frequent optispark failures, is there coolant leaking on it from the water pump, or do you frequently spray water(clean) the engine compartment? The hesitation itself, often caused by premature EGR opening, try plugging the EGR vacuum source line and see what happens.