Question about 1990 Jeep Wrangler

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Doesnt want to idle under 1000rpm

1990 yj 4.2 inline 6, carbureated. fouled a plug a few weeks ago, was running rough so I changed the plugs and wires, it was the 2nd plug, all black and nasty.. ran great after that., now...its not running rough like it was then, but it doesnt want to idel at lower rpm's. and occasionaly the idle will kicitself up now and then. I'm gonna check the plugs again, but i really dopn't think its the same problem. doesn't feel the same. any ideas? could it be a carb problem? one guy i talked to mentioned a throttle positioner?

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It sounds like a tps problem-throttle position sensor

Posted on Nov 12, 2008

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I called the parts store to find out how much a tps is, and I'm told by the counter guy that I don't have one. Is this true?

Posted on Nov 12, 2008

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