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Posted

my 92 sc400 runs rough particularly after sitting more than a couple of days and bucks a little between 1500 to 2000 rpm even when warm. replaced 02 sensors as a result of check engine light hoping that would fix this problem as well but no luck. Any suggestions for starting point for troubleshooting. 155,000 total miles.

tia


Posted

What's the last time the car's had a tune up?

One way to check is if the wires are factory, they have the year on them.

If they're over 5 years old, time for a tune-up.

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