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Old 02-04-2012, 08:29 PM
martee373 martee373 is offline
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89 Throttle body 350 rough idle and hesitation

I'm working on my 89 gmc sierra its got a throttle body 350...i'm having problems with its idling and acceleration...both issues are not a steady issue, it comes and goes but sometimes it idles real rough and when you put it in gear and give it gas to take off it sputters and acts like it doesn't want to take fuel push the gas down a little further and it clears up and takes off most of the time, every once in a while it will kill the engine. like i said though it doesn't do this all the time. as far as what i've done to it so far, its gotton new plugs, wires, cap, rotor button and fuel filter pretty much all of the sensors and electrical components are new or less than a year old so i'm a little stumped as to what the problem might be. Also as of yet the computer has not given any trouble codes.
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