Sigh, another no start.....
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Joined: Dec 2007
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Sigh, another no start.....
Ok, so stumped on this one. 04 Excursion 128k. Been having a intermittent no start. Started back in July, no codes other than for cam sensor from extended cranking I guess. So replaced the engine harness since it seemed to be a common issue(icp/ipr looked good)
While doing the harness replaced the cam sensor, icp and ebp sensors.
Truck was fine for a little while but acting up again. Cold start is fine, i'll drive a mile to the farm for morning chores truck sits 2 hours go to leave and it wont start.
Icp climbs to 1200, then settles to 1000 while cranking. Ipr goes up to 45, then settles to 37.5. Ficm is 48, logic is batt voltage. I have 150+ rpm while cranking, lpo registers too.
My scangage will not show sync until it starts. Don't know if I need to take this path or another?
I have access to a snap-on scanner at my friends shop. Oh, the truck sat all day and started that night. Has done this a few times. Starts fine when totally warmed up.
Thanks for the help, I'm stumped???
While doing the harness replaced the cam sensor, icp and ebp sensors.
Truck was fine for a little while but acting up again. Cold start is fine, i'll drive a mile to the farm for morning chores truck sits 2 hours go to leave and it wont start.
Icp climbs to 1200, then settles to 1000 while cranking. Ipr goes up to 45, then settles to 37.5. Ficm is 48, logic is batt voltage. I have 150+ rpm while cranking, lpo registers too.
My scangage will not show sync until it starts. Don't know if I need to take this path or another?
I have access to a snap-on scanner at my friends shop. Oh, the truck sat all day and started that night. Has done this a few times. Starts fine when totally warmed up.
Thanks for the help, I'm stumped???
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Joined: Dec 2007
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Engine RPM's are 150-160 while cranking. V-ref has been 4.97v. I'll watch it again next time it acts up.
I've has 2 faults for the EGR throttle plate, the butterfly is removed. Maybe I'll unplug that see if it changes anything?? Don't know if that would effect Vref.
Thanks.
I've has 2 faults for the EGR throttle plate, the butterfly is removed. Maybe I'll unplug that see if it changes anything?? Don't know if that would effect Vref.
Thanks.
Senior User
Joined: Mar 2014
Posts: 166
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From: Fort Worth, Tx
Engine RPM's are 150-160 while cranking. V-ref has been 4.97v. I'll watch it again next time it acts up.
I've has 2 faults for the EGR throttle plate, the butterfly is removed. Maybe I'll unplug that see if it changes anything?? Don't know if that would effect Vref.
Thanks.
I've has 2 faults for the EGR throttle plate, the butterfly is removed. Maybe I'll unplug that see if it changes anything?? Don't know if that would effect Vref.
Thanks.
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