1990 GMC Sierra what is wrong

1990 GMC SIERRA
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RHHATLEY
  • MEMBER
  • 1 POST
1990 GMC Sierra V8 Two Wheel Drive Automatic

I have replace the wires, plugs, distributor cap, coil, and fuel filter. But the truck still does not run right. It is sluggish. It acts like it is starving for gas. When you slow down to stop it wants to cut off. I do not know what to do next.
Apr 17, 2010 at 10:03 AM
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BMRFIXIT
  • ✓Experienced Mechanic
  • 19,053 POSTS
Check timing
Check fuel pressure
Check EGR check for vacuum leaks and intake manifold
Apr 18, 2010 at 11:27 PM
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