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Jeep Wrangler YJ
YJ General Discussion
Yj dies while driving
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<blockquote data-quote="deadpool1" data-source="post: 439364" data-attributes="member: 21229"><p>if the FPR goes crazy , gee its old and they do.</p><p>fuel pressure can go to 60psi and sure the CAT melts, sure shootn/</p><p>called flooding , old skool(sic)</p><p></p><p>not saying we know what is wrong, just how to test, want to test using real tools and find it?</p><p>you lost spark too I bet but only the first test, engine assumed good,.</p><p>PCM cuts fuel if it sees spark dead by DESIGN(logic pcm), (and laws on crash and burn avoidance)</p><p></p><p>yes the sad part (below 1996) only DRB tool can see the asd DROP CAUSES. THE TOOL NOBODY HAS.</p><p>So we disconnect things</p><p>alternator jack </p><p>o2 sensor unplugged</p><p>ohm out all injectors for 10 ohms, 0 is shorted.</p><p>check fuel pressure rail, 60psi no good , 0 psi failed., and key on pressure, 3 times, see </p><p>31psi idle</p><p>see 41 key on 3times, (spec is (8-10 psi) higher than running PSI)</p><p>if fuel leaks on FPR nipple it is bad.</p><p>the map hose not falling off or cracked. or on wrong port for vacuum,</p></blockquote><p></p>
[QUOTE="deadpool1, post: 439364, member: 21229"] if the FPR goes crazy , gee its old and they do. fuel pressure can go to 60psi and sure the CAT melts, sure shootn/ called flooding , old skool(sic) not saying we know what is wrong, just how to test, want to test using real tools and find it? you lost spark too I bet but only the first test, engine assumed good,. PCM cuts fuel if it sees spark dead by DESIGN(logic pcm), (and laws on crash and burn avoidance) yes the sad part (below 1996) only DRB tool can see the asd DROP CAUSES. THE TOOL NOBODY HAS. So we disconnect things alternator jack o2 sensor unplugged ohm out all injectors for 10 ohms, 0 is shorted. check fuel pressure rail, 60psi no good , 0 psi failed., and key on pressure, 3 times, see 31psi idle see 41 key on 3times, (spec is (8-10 psi) higher than running PSI) if fuel leaks on FPR nipple it is bad. the map hose not falling off or cracked. or on wrong port for vacuum, [/QUOTE]
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Jeep Wrangler YJ
YJ General Discussion
Yj dies while driving
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