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Jeep Wrangler YJ
YJ General Discussion
5 volts TPS
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<blockquote data-quote="deadpool1" data-source="post: 441210" data-attributes="member: 21229"><p>no hurry take your time , and most time these old cars fail for bad wiring, (by corrosion or abused this old , it happens)</p><p>but now the 20 question list. sorry EFI is complex, and answers are based on tests done and change as tests results are told</p><p>does engine crank fast, yes (we keep the battery fully charged if engine can not run)</p><p>does engine start?, if not use 5% throttle to hide the dead IAC valve bad</p><p>does it start and stay running, all by it self and sustained?</p><p>does it now run only if you pump the right foot?</p><p>if it runs can it drive? or has no power</p><p>is the exh manifold lower lips drip raw fuel> and smelled,</p><p>is backfires as cranked or does it at idle, or only on aggressive rigth foot actions.</p><p>does back fire mean to the air cleaner, a not too loud, cough there or a huge tail pipe here muffler explosion that can wake the dead. (I can't hear it)</p><p>which end of the car backfires, front or rear, I can not guess.</p><p>did it just die one day out of the blue</p><p>or bought like this weak/dead /etc.?</p><p></p><p>the air cleaner backfire hints at a bad engine,in most cases. (burned intake valve or cam out of time) or spark happening at 180 degrees off time.</p><p>to the muffler explosion that is raw fuel , engine rich as a pig or flooding.</p><p></p><p>post all evidence and answers will be better.</p></blockquote><p></p>
[QUOTE="deadpool1, post: 441210, member: 21229"] no hurry take your time , and most time these old cars fail for bad wiring, (by corrosion or abused this old , it happens) but now the 20 question list. sorry EFI is complex, and answers are based on tests done and change as tests results are told does engine crank fast, yes (we keep the battery fully charged if engine can not run) does engine start?, if not use 5% throttle to hide the dead IAC valve bad does it start and stay running, all by it self and sustained? does it now run only if you pump the right foot? if it runs can it drive? or has no power is the exh manifold lower lips drip raw fuel> and smelled, is backfires as cranked or does it at idle, or only on aggressive rigth foot actions. does back fire mean to the air cleaner, a not too loud, cough there or a huge tail pipe here muffler explosion that can wake the dead. (I can't hear it) which end of the car backfires, front or rear, I can not guess. did it just die one day out of the blue or bought like this weak/dead /etc.? the air cleaner backfire hints at a bad engine,in most cases. (burned intake valve or cam out of time) or spark happening at 180 degrees off time. to the muffler explosion that is raw fuel , engine rich as a pig or flooding. post all evidence and answers will be better. [/QUOTE]
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Jeep Wrangler YJ
YJ General Discussion
5 volts TPS
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