1987 GMC Sierra Classic 1500 Series ZLH 5.0 Engine

1987 GMC C1500
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CARL STANLY
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  • 2 POSTS
Throttle Body, Fuel injected, Vehicle designed for Principal use at low Altitude.

I live in North Eastern Pa. and the problem is that it Stalls when coming to a stop. Stalls when put in gear and also stalls at idle, other than this it runs great.

There is no idle adjustment, but I replaced the idle air control valve and it didn't solve the problem.
I'm really puzzled at what I can do to try and fix this problem, if you have any suggestions I sure would like to hear them.

Thanks,

Carl of North East Pa.
Apr 10, 2007 at 11:58 AM
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RASMATAZ
  • ✓Experienced Mechanic
  • 75,988 POSTS
Start with the EGR and fuel pressure then comeback
Apr 11, 2007 at 9:58 AM
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CARL STANLY
  • MEMBER
  • 2 POSTS
I checked both the egr and fuel pressure and both are working properly. I put the truck in gear and it cuts out. Don't know where else to check to find out why it does this.It still cuts out when slowing down to a stop for a stop sign.




Thanks,

Carl
Apr 15, 2007 at 5:07 AM
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RASMATAZ
  • ✓Experienced Mechanic
  • 75,988 POSTS
[quote:399637d2fb="carl stanly"]I checked both the egr and fuel pressure and both are working properly. I put the truck in gear and it cuts out. Don't know where else to check to find out why it does this.It still cuts out when slowing down to a stop for a stop sign.

Check the coolant, throttle, MAP sensors-could be the ICM or crankshaft position sensor.




Thanks,

Carl[/quote:399637d2fb]
Apr 15, 2007 at 10:11 AM
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