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1987 Chevy S-10 Hard to Start will not Idle

Tiny
ROBERTV
  • MEMBER
  • 1987 CHEVROLET S-10
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 150,000 MILES
I have ck fuel pressure, spark at plugs, operation of air idle control, & egr vavle. Please help. Thank you for your time!

RoberV
Sunday, July 13th, 2008 AT 10:01 AM

2 Replies

Tiny
2CARPRO JACK
  • MECHANIC
  • 11,533 POSTS
Is this a 4.3 or a 2.8? Look for vacuum leaks. If you crack the throttle will it idle and start easier? What is the fuel pressure? IS the spark bright blue or orange? Check engine light on?
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Monday, July 14th, 2008 AT 3:07 PM
Tiny
ROBERTV
  • MEMBER
  • 1 POST
Is this a 4.3 or a 2.8? 2.8 Look for vacuum leaks. No vacum leaks. If you crack the throttle will it idle and start easier? NO what is the fuel pressure? 11 PSI. IS the spark bright blue or orange? Blue Check engine light on? NO

I have replace ECM module, The IAC module, and water temp sender.

I have noticed motor still hard to start. But has idle and throttle response when vacum hose to map sensor is disconected.

Thanks for you time & help. RobertV
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Sunday, July 27th, 2008 AT 2:10 PM

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