1991 Chevy Astro loss of power

Tiny
DENNISDEEE
  • MEMBER
  • 1991 CHEVROLET ASTRO
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 15,000 MILES
Driving van had to feather gas pedal to increase speed, then would start running ok once at a stop would stall or run rough, now won't start at all just cranks.
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Sunday, January 17th, 2010 AT 10:25 AM

3 Replies

Tiny
JDL
  • EXPERT
Welcome to the forum. How long since a tune-up? Check fuel pressure, some of the national brand autostores used to loan fuel pressure gage. You can call and ask. Also, check for trouble-codes, see if anything shows up?
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Sunday, January 17th, 2010 AT 10:48 AM
Tiny
DENNISDEEE
  • MEMBER
Thanks don't know last tune up didn't get any check engine light. On highway last it started to lose power but then push it to floor or if I feathered gas pedal would run ok but as soon as I would come to a light would stall or almost stall then had to play with pedal again to get it going then I shut it off and it wouldn't start again
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Sunday, January 17th, 2010 AT 11:00 AM
Tiny
JDL
  • EXPERT
Sorry for the late come-back, I've been having computer issues. If it cranks good, but, won't start, have a helper crank it, while you check for spark at the plugs. You can pull a spark plug boot, stick known good plug in the boot, ground metal part of plug to metal part of engine, watch for spark. If that checks out, check fuel pressure.

Did you try checking for codes? You place a jumper wire between A & B terminals of datalink connector, then turn the key till dash lites come on, no further. The mil starts flashing, you count the lashes to get the codes. Your looking for two digit codes. The picture below is generic GM obd1 datalink connector, just to show location of terminals A & B.


http://www.2carpros.com/forum/automotive_pictures/170934_obd_1_datalink_connector_3.jpg

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Tuesday, January 19th, 2010 AT 10:00 AM

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