Engine cutting out at all speeds
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Freshman User
Joined: May 2005
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From: Everett, WA
Engine cutting out at all speeds
The engine on my '96 F350 has been cutting out intermittently. This just started around a week ago but has gotten so bad I don't feel comfortable driving it around town anymore. I replaced the CPS today, but it had no effect. Where should I be looking for the cause? I checked trouble codes today and only had P0236 - Turbocharger Boost Sensor A Circuit Performance. I don't know if this is causing my trouble or something unrelated. I bought the truck in February, and have not had any problems with it until just recently. I have changed the fuel filter, air filter, all fluids, glow plugs, GPR, and now CPS.
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Freshman User
Joined: May 2005
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From: Everett, WA
No chip, but I use an Edge Evolution programmer. Shouldn't I get a P0344 if my CPS is sending the intermittent signal? I didn't have the code and replaced it anyway. Symptoms did not change with installation of new sensor. What about fuel pressure regulator, bad UVC harness, water in fuel? Can anything other than CPS cause these intermittent cutouts?
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Freshman User
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From: Everett, WA
It's hard for me to tell exactly, but it feels like it's electronic, like the engine just quits for a split second then restarts. When it first started doing this, it only happened while idling in gear, which caused me to notice the sloppy dual mass flywheel as it jerked when it cut out. Now today it started doing it at high rpm on the freeway. It doesn't feel like a clogged fuel supply as it's not a constant sputtering. I don't think it's bad fuel either because I didn't just fill up, nor is it sucking from the very bottom either. Both tanks are at 1/4 right now. The water in fuel light has not illuminated either.
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Freshman User
Joined: May 2005
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From: Everett, WA
Is there any way to test the IDM? I don't know anyone with a PSD that I can swap IDM's with. I'll pull VC's tomorrow and check injector harnesses. Faulty/loose wiring to the CPS maybe? But would that cause it to throw an intermittent signal code?
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Postmaster
Joined: Aug 2004
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From: SHELTON, WA
i would think so on the cps issue.
to bad you were not a little closer. i got a spare idm behind my back seat.
to bad you were not a little closer. i got a spare idm behind my back seat.
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Post Fiend
Joined: Oct 2003
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From: MICHIGAN
Originally Posted by TexasRoughneck
k guys maybe this is a stupid question on my part but what is the idm though, keep hearing it said but still aint figured it out yet. thanks lance
It's output is 115v DC. You'll know when you touch it.
P0236 Turbo boost curcuit:
May be bad wire/connection in MAP sensor. Apply vacuum to sensor, does it hold vacuum for 1+ minute?
Last edited by Cuda_jim; Sep 2, 2006 at 04:04 AM.
Post Fiend
Joined: Oct 2003
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Likes: 1
From: MICHIGAN
Originally Posted by TexasRoughneck
k where is this IDM at then i know another dumb question but that might just be my problem with my truck though thanks Lance
...Box is mounted on drivers side fender apron area, right in front of the Power Distribution Box. About 4x6x2 inches thick. Standing on it's side.
Last edited by Cuda_jim; Sep 2, 2006 at 08:33 AM.