Perfectly good running car until yesterday.

1989 MERCURY MARQUIS
74,146 MILES • 5.0L • V8 • RWD • AUTOMATIC
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THOMAS MCSHAN
  • MEMBER
  • 1 POST
The vehicle was 2quarts low on oil and I
Drove it to the auto parts store with hesitation on take of intermediately. Got the oil in and it wouldn't start got it towed home investigated and discovered a clogged fuel filter. Replaced it and it will only start in neutral and when put in gear it stalls unless the gas pedal is idled up. And there's a rough take off and it's smooth once it gets going. Stalls in reverse automatically.
Mar 19, 2017 at 2:37 PM
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HMAC300
  • AUTOMOTIVE REPAIR CONTRIBUTOR
  • 48,601 POSTS
try cleaning throttle plate on both sides and iac hole with choke cleaner. if it continues check fuel pressure with a gauge it may be low causing this. see link.
https://www.2carpros.com/articles/how-to-check-fuel-system-pressure-and-regulator
Mar 20, 2017 at 7:35 AM