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Jeep Wrangler YJ
YJ General Discussion
TPS setting
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<blockquote data-quote="deadpool1" data-source="post: 439566" data-attributes="member: 21229"><p>spark dies random, tests. (that last resort) for cars that only fail driving, never parked fails.parked is easy , moving never easy(OBD1 renix)</p><p>proof</p><ol> <li data-xf-list-type="ol">hood off (safe is off)</li> <li data-xf-list-type="ol"><a href="https://www.harborfreight.com/timing-light-with-advance-40963.html" target="_blank">timing light (strobe) connected </a>to spark plug 1or 4 what ever is most easy, mag pickup to HV wires, HV wires new, old ones are<strong> pure trash.</strong></li> <li data-xf-list-type="ol">tape tool to wipers, (duct tape)</li> <li data-xf-list-type="ol">tape tools trigger to on, more duct tape ! duct tape solves all problems we are told ,does it?, we will see.</li> <li data-xf-list-type="ol">key on idling and flashing like mad, good. </li> <li data-xf-list-type="ol">now drive, and make it fail what ever does.</li> <li data-xf-list-type="ol">and see if flashing ends. at HESITATION. (repeat for all 4 spark wires to prove none fail)</li> <li data-xf-list-type="ol">bingo.? even a bad spark plug, even new with its tip cone cracked can fail at random or higher cylinders pressures.</li> </ol><p></p><p>HV = High voltage spark, 15KV. up.</p><p>if passes all tests then SPARK IS NOT IT.</p><p>if fails we work spark per above post , 27.</p><p>if all testing do not prove cause, it may be a bad PCM.</p><p>the first RENIX jeep I had 88, , the manufacturer Jeep recalled it for CKP fails. it was defective. out of the factory. so there is that;</p><p>and recalled Alternator, bad bearings at 10,000 miles. on brand new car. then.</p></blockquote><p></p>
[QUOTE="deadpool1, post: 439566, member: 21229"] spark dies random, tests. (that last resort) for cars that only fail driving, never parked fails.parked is easy , moving never easy(OBD1 renix) proof [LIST=1] [*]hood off (safe is off) [*][URL='https://www.harborfreight.com/timing-light-with-advance-40963.html']timing light (strobe) connected [/URL]to spark plug 1or 4 what ever is most easy, mag pickup to HV wires, HV wires new, old ones are[B] pure trash.[/B] [*]tape tool to wipers, (duct tape) [*]tape tools trigger to on, more duct tape ! duct tape solves all problems we are told ,does it?, we will see. [*]key on idling and flashing like mad, good. [*]now drive, and make it fail what ever does. [*]and see if flashing ends. at HESITATION. (repeat for all 4 spark wires to prove none fail) [*]bingo.? even a bad spark plug, even new with its tip cone cracked can fail at random or higher cylinders pressures. [/LIST] HV = High voltage spark, 15KV. up. if passes all tests then SPARK IS NOT IT. if fails we work spark per above post , 27. if all testing do not prove cause, it may be a bad PCM. the first RENIX jeep I had 88, , the manufacturer Jeep recalled it for CKP fails. it was defective. out of the factory. so there is that; and recalled Alternator, bad bearings at 10,000 miles. on brand new car. then. [/QUOTE]
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Jeep Wrangler YJ
YJ General Discussion
TPS setting
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