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93 Cadillac surge and stall in reverse

Tiny
GH05T870CADDY
  • MEMBER
  • 1993 CADILLAC STS
  • V8
  • FWD
  • AUTOMATIC
  • 225 MILES
I have a 93 Cadillac sts seville with the 4.6 V8 Northstar. When I accelerate the car runs fine, but when I let off the gas it surges or****** as the idle goes down and the car slows down. A couple of times the car stalled when in reverse. I replaced the plugs. Any help would be great.
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Thursday, December 23rd, 2010 AT 7:11 AM

2 Replies

Tiny
KENNY KELLY
  • MEMBER
  • 4 POSTS
If you'll pull the codes and post them, I'll look them up. They'll most likely tell what's going on.
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Wednesday, December 29th, 2010 AT 9:17 AM
Tiny
FACTORYJACK
  • MECHANIC
  • 4,159 POSTS
Possible EGR sticking, and could even have a deceleration misfire.
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Wednesday, February 2nd, 2011 AT 4:09 AM

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