Engine Stumble @ highway speed
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Joined: Jul 2023
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From: Cape Cod, MA
Engine Stumble @ highway speed
2002 Cadillac Deville – 160K Miles
Engine Stumbles (pauses) uphill at highway speed, about every 5 minutes or so. I have replaced the air filter and fuel filter, added injector cleaner and 93 octane. Possible relevant codes include: P0741, P1860 & P1415. Not sure where to go next. Could be a vacuum leak or a bad sensor, but not sure how to chase either. I own two spare coil packs from a previous DeVille. Appreciate any thoughts.
Engine Stumbles (pauses) uphill at highway speed, about every 5 minutes or so. I have replaced the air filter and fuel filter, added injector cleaner and 93 octane. Possible relevant codes include: P0741, P1860 & P1415. Not sure where to go next. Could be a vacuum leak or a bad sensor, but not sure how to chase either. I own two spare coil packs from a previous DeVille. Appreciate any thoughts.
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