I keep getting a check engine light, usually hopping on the freeway, higher RPM's (3500-4500, usually when it's at a steady RPM)
I did the stomp test got 1271, Ignition Coil #1, I replaced the plugs, wireset (brand new), and tonight I replaced the coil pack with a used set off a running good 318. Still get the light.
I failed smog due to high HC and CO @15mph. Car runs great, no hesitations or cut outs at any RPM.
What else should I start checking?
CAR:
91 318
Mark D chip (It's been installed for 250-300 miles before the light started showing up)
225k
I did the stomp test got 1271, Ignition Coil #1, I replaced the plugs, wireset (brand new), and tonight I replaced the coil pack with a used set off a running good 318. Still get the light.
I failed smog due to high HC and CO @15mph. Car runs great, no hesitations or cut outs at any RPM.
What else should I start checking?
CAR:
91 318
Mark D chip (It's been installed for 250-300 miles before the light started showing up)
225k
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