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Timing chain at fault in 88 Cavalier?
Unfortunately, I understand that at least the following three items, which I already replaced once before, may be at fault:
Catalytic converter (replaced at 63,000 miles in 1994).
Oxygen sensor (replaced at 66,000 miles in 1994).
Ignition control module (replaced at ca. 80,000 miles in 1996).
However, I replaced the latter two items because the “service engine” light was on, and it is not on now. As for the catalytic converter, my recent success in eliminating NOx emissions suggests that it still works.
A symptom: hesitation or momentary loss of power whenever I first step on the gas pedal and then again during shift from first to second gear as I accelerate. I neither feel nor hear anything like a misfire, which would presumably be hard to overlook in this four-cylinder (2.0L) car. I am reluctant to invest much more than the cost of a new timing chain in a car that will be junk if its original transmission fails soon. How likely is a new timing chain to eliminate my excessive hydrocarbon emissions? The local Chevy mechanic gave me the impression that the cost of inspecting the chain is not much less than getting a new one!