Cuts out while driving. - PowerStrokeNation : Ford Powerstroke Diesel Forum
 
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post #1 of 8 (permalink) Old 11-01-2012, 01:06 PM Thread Starter
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Cuts out while driving.

Im working on a 1995 with an auto trans. When you get in the high RPM's (anything above 2000) the truck with briefly cut out and return to normal. It happens so fast, the ford scan tool doesn't capture it. Its enough to notice while your driving tho. seems worse under load but it will do it in park just raising the RPM. I have replace the IPR the ICP sensor and the wiring connector to the sensor. No change in the symptom. any ideas?

1995 f-250 4x4 5 sped
4in lift,35in tires, 6637, FPR shim, Solid axle, Warn hubs, D66, PHP tunes, Hood stack, Weight box,
traction bars, rust, dents

Late 99 ext cab short bed. 388,000 miles
T500, Full Force Diesel 238/100's
Regulated fuel Return, 38r, ISS Pro gauges
5' exhaust, Riffraff diesel 6637 intake, Gearhead tunes
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post #2 of 8 (permalink) Old 11-01-2012, 03:08 PM
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Re: Cuts out while driving.

Cps sensor/ idm?


1997 F350 SRW CCLB 7.3 ZF5 4x4
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post #3 of 8 (permalink) Old 11-01-2012, 07:31 PM Thread Starter
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Re: Cuts out while driving.

I thought about the cps also. I played with it some more today and noticed it seems to get better when the engine is warmed up. How do you go about checking an IDM if there are no codes? I have never dealt with it.

1995 f-250 4x4 5 sped
4in lift,35in tires, 6637, FPR shim, Solid axle, Warn hubs, D66, PHP tunes, Hood stack, Weight box,
traction bars, rust, dents

Late 99 ext cab short bed. 388,000 miles
T500, Full Force Diesel 238/100's
Regulated fuel Return, 38r, ISS Pro gauges
5' exhaust, Riffraff diesel 6637 intake, Gearhead tunes
FordTech570 is offline  
 
post #4 of 8 (permalink) Old 11-02-2012, 04:58 AM
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Re: Cuts out while driving.

You need special equipment to actually check an IDM properly that the average tech wouldn't know how to use. The easiest way to verify an IDM issue is to temporarily swap it out with a known good unit and see if the problem goes away. When you say the truck cuts out do you mean the engine stalls or does it attempt to return to idle? It could be as simple as a faulty TPS or it could be as complex as an issue somewhere it the high pressure oil system.

97 F-350 XLT CC DRW 4X4 PSD, 285/75-16 Custom bumpers, Gauges-boost/egt/trans, Swamps IDM, 3.5"dp- 4" exh., 3" Body lift, ES bushings/mounts, Built trans, billet conv, B&M pan, Hayden cooler, Adrenaline, stage 2's, IC, H2E, E-fuel
ARP's, 910's, Smith Bros. to come
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post #5 of 8 (permalink) Old 11-05-2012, 01:14 PM Thread Starter
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Re: Cuts out while driving.

I work at a dealership, so we should have the equiptment. I found the cam position sensor was shorting v-ref and throwing off all the values any 3 wire sensor was reading.

1995 f-250 4x4 5 sped
4in lift,35in tires, 6637, FPR shim, Solid axle, Warn hubs, D66, PHP tunes, Hood stack, Weight box,
traction bars, rust, dents

Late 99 ext cab short bed. 388,000 miles
T500, Full Force Diesel 238/100's
Regulated fuel Return, 38r, ISS Pro gauges
5' exhaust, Riffraff diesel 6637 intake, Gearhead tunes
FordTech570 is offline  
post #6 of 8 (permalink) Old 11-05-2012, 01:26 PM
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Re: Cuts out while driving.

I went through the same with my 97 F350. I called the symptom a "hiccup" because it shut down and picked back up so quickly. Replaced the cam Position Sensor and cured the hiccups.
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post #7 of 8 (permalink) Old 11-06-2012, 04:29 PM Thread Starter
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Re: Cuts out while driving.

Quote:
Originally Posted by bushhogger View Post
I went through the same with my 97 F350. I called the symptom a "hiccup" because it shut down and picked back up so quickly. Replaced the cam Position Sensor and cured the hiccups.
I like that term haha I'll remember that

1995 f-250 4x4 5 sped
4in lift,35in tires, 6637, FPR shim, Solid axle, Warn hubs, D66, PHP tunes, Hood stack, Weight box,
traction bars, rust, dents

Late 99 ext cab short bed. 388,000 miles
T500, Full Force Diesel 238/100's
Regulated fuel Return, 38r, ISS Pro gauges
5' exhaust, Riffraff diesel 6637 intake, Gearhead tunes
FordTech570 is offline  
post #8 of 8 (permalink) Old 11-10-2012, 05:39 PM
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Re: Cuts out while driving.

OK you will need an oscilloscope in order to view the wave sin and determine whether or not you are getting a proper signal at each parameter you check. What dealership by the way. My local dealership shut the doors and now I need a new place for parts.

97 F-350 XLT CC DRW 4X4 PSD, 285/75-16 Custom bumpers, Gauges-boost/egt/trans, Swamps IDM, 3.5"dp- 4" exh., 3" Body lift, ES bushings/mounts, Built trans, billet conv, B&M pan, Hayden cooler, Adrenaline, stage 2's, IC, H2E, E-fuel
ARP's, 910's, Smith Bros. to come
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