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1991 Chevy Astro stalling

Tiny
THARRIS75
  • MEMBER
  • 1991 CHEVROLET ASTRO
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 136,000 MILES
This van will not idle, and keeps stalling. When you give it gas it seems to rev in park but once you let off the gas it dies. When driving, it does not want to accellerate very quick and runs VERY sluggish and when you come to a stop it wants to die. I have change the fuel filter, map sensor, throttle position sensor, throttle body and the plugs and wires
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Wednesday, July 9th, 2008 AT 12:13 PM

1 Reply

Tiny
MMPRINCE4000
  • MECHANIC
  • 8,548 POSTS
Check fuel pressure with a mechanical gauge, you may also have a malfunctioning EGR system, which will cause stalling and sluggish performance.
Did you clean the IAC valve when you had the TB off? Is the ECM throwing any codes?

If equipped with distributor, check timing and check spark output if equipped with coil paks.
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Thursday, July 10th, 2008 AT 5:15 AM

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