1987 Chevy S-10 Hard to Start will not Idle

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

RoberV
Jul 13, 2008 at 3:01 AM
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2CARPRO JACK
  • ✓Experienced 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?
Jul 14, 2008 at 8:07 AM
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ROBERTV
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  • 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
Jul 27, 2008 at 7:10 AM
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