Forums
New posts
Search forums
Image search
Shop
Amazon Store
T-Shirts
Stickers
Members
Current visitors
Supporting Member Upgrade
Sponsors
About
Log in
Register
Search
Search titles only
By:
Search titles only
By:
New posts
Search forums
Image search
Search
Search titles only
By:
Search titles only
By:
Menu
Install the app
Install
JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding.
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an
alternative browser
.
Forums
Jeep Wrangler YJ
YJ General Discussion
95 2.5 Idles Erratically Then Stalls at Operating Temperature
Reply to thread
Message
<blockquote data-quote="deadpool1" data-source="post: 440428" data-attributes="member: 21229"><p>if you unplug the ALT connector, (dont drive) but keep battery charger on line to the battery</p><p>does the stall , not HAPPEN NOW pin 2 not connected. ??????</p><p>HUMMMMMMMMMMMMMMMMMMMMMM</p><p></p><p>pin 2 must not short. on GEN</p><p>the PCM controls charging via pin 1.</p><p>pin 2 is the dead alternator excition pin, this pin goes hot 12vdc at key on ASD closes</p><p>this allows the PCM go control the GEN at all time even cranking, it may hold the gen off line until the engine starts.</p><p>if pin 2 shorts, ASD see that, and is gross overload, and shuts it all down.</p><p>after all why blow up a good ECU ? with shorted GEN pin 2. no that be bad.</p><p>also the 2 parallel 50amp fuses. both must be good. are they? in the PCD.</p><p>I dont make the rules , i only follow them.</p><p>Learning how it works is a huge plus.</p><p></p><p>[ATTACH=full]122211[/ATTACH]</p><p>some cars (never jeeps I lie) have wrong generator installed.</p><p> make sure all that is correct and not wired wrong or shorted wires on A142 , the 02 sensors love to short A142 , for sure the 02 engine clamp keeping the</p><p>O2 wires from hitting the red hot manifold, like endless we see or the heater inside the O2 is shorted. dang, never rare that.</p><p><img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite3998" alt=":cool:" title="Cool :cool:" loading="lazy" data-shortname=":cool:" /></p><p>the pin2 is hidden way far deep behind the alternator. not easy to disconnect for testing,</p></blockquote><p></p>
[QUOTE="deadpool1, post: 440428, member: 21229"] if you unplug the ALT connector, (dont drive) but keep battery charger on line to the battery does the stall , not HAPPEN NOW pin 2 not connected. ?????? HUMMMMMMMMMMMMMMMMMMMMMM pin 2 must not short. on GEN the PCM controls charging via pin 1. pin 2 is the dead alternator excition pin, this pin goes hot 12vdc at key on ASD closes this allows the PCM go control the GEN at all time even cranking, it may hold the gen off line until the engine starts. if pin 2 shorts, ASD see that, and is gross overload, and shuts it all down. after all why blow up a good ECU ? with shorted GEN pin 2. no that be bad. also the 2 parallel 50amp fuses. both must be good. are they? in the PCD. I dont make the rules , i only follow them. Learning how it works is a huge plus. [ATTACH type="full" alt="gen.JPG"]122211[/ATTACH] some cars (never jeeps I lie) have wrong generator installed. make sure all that is correct and not wired wrong or shorted wires on A142 , the 02 sensors love to short A142 , for sure the 02 engine clamp keeping the O2 wires from hitting the red hot manifold, like endless we see or the heater inside the O2 is shorted. dang, never rare that. :cool: the pin2 is hidden way far deep behind the alternator. not easy to disconnect for testing, [/QUOTE]
Verification
Post reply
Forums
Jeep Wrangler YJ
YJ General Discussion
95 2.5 Idles Erratically Then Stalls at Operating Temperature
Top
Bottom