the official OBS diesel off topic thread
06-29-2016, 05:54 AM
Post Fiend
hey guys, need some help from the brain trust here.
i was over trying to see what is up with 1bigjoe's short bus.
here is what he has done so far:
new cps -ford
new ipr
new ipc
new valve covers/ & pigtails
new fuel pump
hpop full
new glow plugs / & relay
two new 1000 cca batteries
new injector O-rings
cranks really fast--no smoke -no start
its the short bus there is no tachometer
it was running fine, but started acting up as he was driving up front from the back yard. when he got to his tool shed it died. and has sat there dead since.
of course because i plugged it in the autoenginuity decided to erase the activation code, and i did not have it to re enter into the laptop. i tried the hand held scanner, but got nowhere.
there is no smoke at all out of the tailpipe.
it almost sounds like no fuel, but it has fuel pressure at the schrader valve. not sur ehow much, but when you depress the schrader fuel shoots out.
i am working on getting the activation code for AE.
anyone have any ideas what to look for?
i was over trying to see what is up with 1bigjoe's short bus.
here is what he has done so far:
new cps -ford
new ipr
new ipc
new valve covers/ & pigtails
new fuel pump
hpop full
new glow plugs / & relay
two new 1000 cca batteries
new injector O-rings
cranks really fast--no smoke -no start
its the short bus there is no tachometer
it was running fine, but started acting up as he was driving up front from the back yard. when he got to his tool shed it died. and has sat there dead since.
of course because i plugged it in the autoenginuity decided to erase the activation code, and i did not have it to re enter into the laptop. i tried the hand held scanner, but got nowhere.
there is no smoke at all out of the tailpipe.
it almost sounds like no fuel, but it has fuel pressure at the schrader valve. not sur ehow much, but when you depress the schrader fuel shoots out.
i am working on getting the activation code for AE.
anyone have any ideas what to look for?
No smoke means no fuel, so I would check all fuses, maybe swap around some relays under the hood, test for power at the PCM, then if I got nowhere, I'd put a mechanical 3500 PSI gauge on the HPO rail and see if it's making pressure. That's a start anyway.
06-29-2016, 08:09 AM
Join Date: Mar 2005
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06-29-2016, 08:42 AM
all fuses in the under hood box test good, not sure if there is an under dash fuse box. and there is no marking as to what fuse is what. i am looking for a shortbus fuse diagram.
do you know if the van and pickup computers are the same?
i was thinking a bad computer also.
do you know if the van and pickup computers are the same?
i was thinking a bad computer also.
06-29-2016, 10:13 AM
Post Fiend
If he has changed the ICP and IPR he probably has a a bunch of air in the HPO system anyway, so it may take a while to get that all purged out. I think he's gonna need a HPO gauge.
He could always test the IPR for a signal using a DVOM if he's comfortable doing so.
Short bus should be the same wiring as an Econoline Van, no?
He could always test the IPR for a signal using a DVOM if he's comfortable doing so.
Short bus should be the same wiring as an Econoline Van, no?
06-29-2016, 11:45 AM
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06-29-2016, 11:50 AM
Fleet Mechanic
Yeah, but maybe the HPOP is getting weak or something is causing the high pressure oil to not be as high as it should. I haven't hooked up a high pressure oil gauge, but I think it's as easy as taking off an oil galley plug and putting a gauge in there (right?)
From what was done, I'm thinking it's either a bad PCM or not high enough oil pressure at the injectors.
From what was done, I'm thinking it's either a bad PCM or not high enough oil pressure at the injectors.
06-29-2016, 11:52 AM
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06-29-2016, 01:01 PM
Postmaster
06-29-2016, 01:07 PM
Join Date: Mar 2005
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06-29-2016, 01:08 PM
Post Fiend
So some how my link to the crank, no start flow chart got deleted...
Does this thing have a CEL? Maybe something is wrong with the injector wiring causing the IDM (both of them) to shut down. Its also possible that there could be a wiring problem with the CPS or IPR.
Does this thing have a CEL? Maybe something is wrong with the injector wiring causing the IDM (both of them) to shut down. Its also possible that there could be a wiring problem with the CPS or IPR.
Crank, No Start Troubleshooting
06-29-2016, 01:27 PM
Postmaster
06-30-2016, 12:15 AM
Logistics Pro
It might be worth while to check the fuse sockets in the fuse panels. My Son has an early 99 Superduty 450 that died when slowing down to turn off the highway, into a pasture. It would spin over fast but would not start. All fuses tested good, but when my computer was plugged into the data port it would not communicate with the PCM, or even power up. After digging into the fuse panels, it was discovered that the socket was spread apart, and was not contacting the blade of the fuse. A pinch of the socket with a needle nose plyers, contact was made, and all is good. A simple fix after 2 days of head scratching, wondering wtf was going on.
06-30-2016, 10:17 AM
Postmaster