Mechanics

90 SEARRIA

1990 GMC Truck • V8 4WD Automatic • 199,800 miles

My truck shaking while idling seems to loose power?
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Tkdmiller
December 16, 2010.




Do you have a check engine light? Don't recall last tune -up start here and see what happens
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Tiny
Rasmataz
Dec 16, 2010.
I just had the spark plugs replaced, new spark plug wires, new fuel pump. I had this issue before I had all this done. Thought that fixed it. The shaking comes and goes. When I rev it up it seems to go away. It happens when I come to a stop and is slow to take off but runs fine once I get it going. Could it be the transmission?

Tiny
Tkdmiller
Dec 16, 2010.
Check and test the throttle position and manifold absolute pressure sensors-also the EGR valve

Tiny
Rasmataz
Dec 16, 2010.

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