Cam sensor? - Ford Powerstroke Diesel Forum

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post #1 of 11 Old 05-04-2009, 12:32 PM Thread Starter
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Cam sensor?

New fuel filter, new frame mounted electric fuel pump still no luck Truck loses power when accelerating. Will cough and choke then all of a sudden it picks up and runs fine. Only when accelerating. Idles fine. No other problems except when accelerating. Could it be the cam sensor?

99.5 F-250 Lariat 4x4 CC
-Isspro's in A-pillar
-5" TB into 6" miter
-Recon smoked cab lights
-Bullydog "mileage" chip *Matts tunes in 2 weeks*
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-DIY intake, Foil delete
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post #2 of 11 Old 05-04-2009, 12:41 PM
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Originally Posted by blowinsmoke7.3 View Post
New fuel filter, new frame mounted electric fuel pump still no luck Truck loses power when accelerating. Will cough and choke then all of a sudden it picks up and runs fine. Only when accelerating. Idles fine. No other problems except when accelerating. Could it be the cam sensor?
Have you checked your pickup screen in your fuel tank for crud? Your symptoms don't sound exactly like a clogged screen, but if your fuel level is low enough, it's worth a look. Have you also tried scooping up a new CPM & give it a try to see if it clears up anything? If you've got a grey one installed on your rig, you should have another one for a spare, anyway.

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post #3 of 11 Old 05-04-2009, 12:50 PM Thread Starter
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Originally Posted by RadarRider View Post
Have you checked your pickup screen in your fuel tank for crud? Your symptoms don't sound exactly like a clogged screen, but if your fuel level is low enough, it's worth a look. Have you also tried scooping up a new CPM & give it a try to see if it clears up anything? If you've got a grey one installed on your rig, you should have another one for a spare, anyway.
Truck has a full tank right now You mean CPS? Arent those pricy?

99.5 F-250 Lariat 4x4 CC
-Isspro's in A-pillar
-5" TB into 6" miter
-Recon smoked cab lights
-Bullydog "mileage" chip *Matts tunes in 2 weeks*
-Warn hubs
-DIY intake, Foil delete
-Hankook MT 285's
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post #4 of 11 Old 05-04-2009, 03:38 PM Thread Starter
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Failed to mention that from time to time the truck also develops a sporadic idle. Will jump from 1200 up to almost 2000 at times then back down to almost shutting down. This isnt all the time though. Maybe 1 in every 10 starts or so

99.5 F-250 Lariat 4x4 CC
-Isspro's in A-pillar
-5" TB into 6" miter
-Recon smoked cab lights
-Bullydog "mileage" chip *Matts tunes in 2 weeks*
-Warn hubs
-DIY intake, Foil delete
-Hankook MT 285's
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post #5 of 11 Old 05-04-2009, 04:23 PM
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Do you have a resistor in your ICP?

If so I would take it out.

Chris

2002 Crew Cab Long Bed
4" BDS, 35x13.50 Cooper STT on 20x10 Black Rockstars, and other stuff.....310,000 miles and counting...
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post #6 of 11 Old 05-04-2009, 04:32 PM
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your symptoms aren't caused by the CPS. you may have a bad ICP sensor or your IDM is dying.

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post #7 of 11 Old 05-04-2009, 04:38 PM
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Originally Posted by sldghamr View Post
your symptoms aren't caused by the CPS. you may have a bad ICP sensor or your IDM is dying.
Actually, I agree with sldghamr's reply. I remember the same thing happening to my IDM last year, but it happened a lot faster & the truck died within 10min. If you can get your hands on a scan tool with functional test capability, I'd run a buzz test & see if any IDM codes pop up.

"HEAVY" 2001 F-250 XLT 4x4 EC SB:
TW 6pos chip, S&B CAI, Monster 4" exhaust w/ Power Elbow, Big Head WGA, Technicooler, ITP boost fooler, Gen 1 Wicked Wheel, Six-Gun Tuner, Optima Yellow Tops, AutoMeter(Boost, Trans, EGT), CCV mod, MTS TC, MTS valve body, Trans Tech performance rebuild kit, TransGo shift kit, Hornblasters 242 Shocker Train Horns.

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post #8 of 11 Old 05-05-2009, 08:27 AM Thread Starter
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Quote:
Originally Posted by Southpaw View Post
Do you have a resistor in your ICP?

If so I would take it out.
Had one at one for a short period of time but didnt like it at all. Took it out long before this stared. Could that have anything to do with this?

99.5 F-250 Lariat 4x4 CC
-Isspro's in A-pillar
-5" TB into 6" miter
-Recon smoked cab lights
-Bullydog "mileage" chip *Matts tunes in 2 weeks*
-Warn hubs
-DIY intake, Foil delete
-Hankook MT 285's
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post #9 of 11 Old 05-05-2009, 10:51 AM
Let's go B's!!!!

 
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No I doubt it. Not if it came out a while ago, and you didn't have any problems til now.

Chris

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4" BDS, 35x13.50 Cooper STT on 20x10 Black Rockstars, and other stuff.....310,000 miles and counting...
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post #10 of 11 Old 05-05-2009, 11:16 AM
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sounds like icp issues,do like radar rider says and scan it and see what your icp is doing.

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