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Jeep Wrangler YJ
YJ General Discussion
95 2.5 Idles Erratically Then Stalls at Operating Temperature
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<blockquote data-quote="deadpool1" data-source="post: 440439" data-attributes="member: 21229"><p>one more tip on the 3 times on/ off</p><p>if you fail to keep the key on long enough it fails. </p><p>it is tricky for sure, this timing, take your time,</p><p>I think (not sure) the key on until the dash lamps go stable.</p><p>then key off. ,3rd time on, it will flash. (cel glows running) it now flashes DTC errors.(codes)</p><p></p><p>The other evidence, to gather (on all stalls)</p><p>are:</p><p></p><ul> <li data-xf-list-type="ul">at the stall did other electrical things to dead at that instant? Head lamps dimmed, radio died, dash blower dies or is weak blow? or other things?</li> <li data-xf-list-type="ul">Is CEL lamp glowing , at run time, , get the DTC codes to see what failed. ( seems ECU is not working) flash codes dead. not a good sign.</li> <li data-xf-list-type="ul">are the spark plugs tips wet or dripping. with fuel, Oil, Antifreeze, or carbon fouled out.? Tip inspections can help</li> <li data-xf-list-type="ul">how long does it take to start again,? and when not wanting to restart try 5% throttle pedal to start now? IAC stuck closed?</li> <li data-xf-list-type="ul">battery voltage running never drops below 13vdc?</li> <li data-xf-list-type="ul">if flooding stalls, and wet spark plugs , use WOT cranking to clear the flood. (magic un-flood mode works)</li> <li data-xf-list-type="ul">Do all Alternator tests pass.</li> <li data-xf-list-type="ul">does it start correctly if jumper cables are added to the mix. (a class jump start)</li> <li data-xf-list-type="ul">See if ASD relay does drop out. running or cranking. </li> <li data-xf-list-type="ul">the center of my dash the right side meter is VOLTS. did it go below 13v? at 10v the PCM goes mad. (a crude meter, a real DMM is far better)</li> <li data-xf-list-type="ul">as car stalls , parked or moving does a fast right foot delay or prevent the stall? (IAC never cleaned ? of gunk on it?)</li> </ul><p></p><p>the alternator has 4 wires, </p><p>1 huge ground wire. </p><p>1: huge Main charge wire to battery Plus lug ,</p><p>1 tiny wire A142 excitation power feed rear called pin 2. (if this wire shots, ASD relay goes off line , and engine has no spark nor fuel now.)</p><p>1 tiny wire to PCM is the PCM pin1 regulation wire. (this is PCM WPM modulation for the rotor coil of ALT)</p><p>any off them for bad connection the ALT is now a useless brick door stop</p><p></p><p>Evidence and tests RULE ! With evidence we can stop guessing or learn what is the next test to hone in on the REAL cause (can be even 2 or 3 )</p><p>yes a loose wire can do this. (means grounds too)</p><p>yes a rusty wire (means corrosion) can do this or a pin.</p></blockquote><p></p>
[QUOTE="deadpool1, post: 440439, member: 21229"] one more tip on the 3 times on/ off if you fail to keep the key on long enough it fails. it is tricky for sure, this timing, take your time, I think (not sure) the key on until the dash lamps go stable. then key off. ,3rd time on, it will flash. (cel glows running) it now flashes DTC errors.(codes) The other evidence, to gather (on all stalls) are: [LIST] [*]at the stall did other electrical things to dead at that instant? Head lamps dimmed, radio died, dash blower dies or is weak blow? or other things? [*]Is CEL lamp glowing , at run time, , get the DTC codes to see what failed. ( seems ECU is not working) flash codes dead. not a good sign. [*]are the spark plugs tips wet or dripping. with fuel, Oil, Antifreeze, or carbon fouled out.? Tip inspections can help [*]how long does it take to start again,? and when not wanting to restart try 5% throttle pedal to start now? IAC stuck closed? [*]battery voltage running never drops below 13vdc? [*]if flooding stalls, and wet spark plugs , use WOT cranking to clear the flood. (magic un-flood mode works) [*]Do all Alternator tests pass. [*]does it start correctly if jumper cables are added to the mix. (a class jump start) [*]See if ASD relay does drop out. running or cranking. [*]the center of my dash the right side meter is VOLTS. did it go below 13v? at 10v the PCM goes mad. (a crude meter, a real DMM is far better) [*]as car stalls , parked or moving does a fast right foot delay or prevent the stall? (IAC never cleaned ? of gunk on it?) [/LIST] the alternator has 4 wires, 1 huge ground wire. 1: huge Main charge wire to battery Plus lug , 1 tiny wire A142 excitation power feed rear called pin 2. (if this wire shots, ASD relay goes off line , and engine has no spark nor fuel now.) 1 tiny wire to PCM is the PCM pin1 regulation wire. (this is PCM WPM modulation for the rotor coil of ALT) any off them for bad connection the ALT is now a useless brick door stop Evidence and tests RULE ! With evidence we can stop guessing or learn what is the next test to hone in on the REAL cause (can be even 2 or 3 ) yes a loose wire can do this. (means grounds too) yes a rusty wire (means corrosion) can do this or a pin. [/QUOTE]
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Jeep Wrangler YJ
YJ General Discussion
95 2.5 Idles Erratically Then Stalls at Operating Temperature
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