Question about Jeep Wrangler

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1990 jeep wrangler with streight six seems to not fire while starting but when switch is released it fires just enouth for it to burp but will not start

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Common problem. take the air intake hose off you throttle body and then remove the IAC (idle air control) sensor from the side of the throttle body it is held on with two torx screws be careful though they will probably have Lock Tight on them they should be T15 size torx, you don't want to strip the heads of them out or you'll have to replace the throttle body. Once you have it out you try two things first cleaning it with carb and throttle body cleaner spray and a toothbrush ( be careful not to touch the element under the spring loaded sleeve and do not drop it or twist the sleeve) The sleeve should be able to move freely up and down. after you clean it put it back in (DO NOT LOSE THE O RING WHEN TAKING IT OUT OF THE THROTTLE BODY OR WHILE CLEANING IT) After cleaning it let it dry completely before reinstalling. this should take care of your problem if it doesn't try replacing it all together they cost about $50 and are normally supplied in stock at most parts dealers.

Posted on Oct 03, 2010

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