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Dies when comes to stop and when you put foot to floor it bucks

Tiny
DAVE L B
  • MEMBER
  • 1991 CADILLAC DEVILLE
  • 103,000 MILES
Replace coil and did tune up check furl pres and is at 32 to42 psi the coil was bad when I replace it the problum went away now it is back
Monday, December 12th, 2011 AT 3:43 AM

4 Replies

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
So what's with it now?
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Monday, December 12th, 2011 AT 3:52 AM
Tiny
DAVE L B
  • MEMBER
  • 2 POSTS
Dies when comes to a stop when its at normel temp not when cold
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Monday, December 12th, 2011 AT 4:20 AM
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Check the IACV, TPS and the TCC solenoid
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Monday, December 12th, 2011 AT 4:25 AM
Tiny
FACTORYJACK
  • MECHANIC
  • 4,159 POSTS
If the throttle switch is always sensing that the throttle is at rest, it will fully retract, trying to control the increasing speed as you accelerate. With this switch showing that the throttle is at rest, any increase in engine speed is seen as an increasing idle, that the system thinks it should be in control of. The isc fully retracts trying to lower this speed. You release the throttle, at in closes to it's hard stop, shotting off airflow past the throttle plates, and stalling. When it stalls, check and see if there is a gap between the throttle cam, and the ISC pintle.
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Tuesday, December 13th, 2011 AT 2:56 AM

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