Question about 1984 GMC K2500
Suspect a weak throttle spring and maybe binding in the linkage somewhere. Check the foot-pedal bearing point for friction. Make sure the carburetor mounting bolts/nuts are tight along with the carburetor body screws. Check for leaking vacuum lines from the intake manifold and the carburetor.
Posted on Sep 26, 2009
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Posted on Jan 02, 2017
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The engine and automatic transmission in this vehicles drive train are fully electronically controlled by a computer called the PCM (Power Train Control Module). Whenever a problem like this occurs the computer stores a record of the problem (there are of course some exceptions to this, like the fuel pump, engine coolant temperature sensor and MAF sensor for instance) in the form of a fault code in its memory, to read these fault codes you must have the systems memory scanned with a special tool. Once the fault code(s) are read you then must perform the appropriate diagnostic testing to find and resolve the problem(s) DO NOT REPLACE ANY PARTS UNTIL A TRAINED TECHNICAIN HAS DIAGNOSED THE PROBLEM TO AVOID SPENDING YOUR HARD EARNED MONEY ON PARTS THAT MAY NOT CORRECT THE PROBLEM
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