Cam Position Sensor ?'s - Diesel Truck Forum - TheDieselGarage.com
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post #1 of 12 (permalink) Old 03-24-2006, 12:39 AM Thread Starter
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Cam Position Sensor ?'s

I've got an '01 F550 (truck in sig). Does a bad Cam Position Sensor give any symptoms?

John - 2004 Harley F250 Black/Competition Orange All the factory goodies, '05 Black Harley Headlights, Silverline 4'' Duals W/5'' Chrome Tips, Edge Platinum, Sirius Satellite,Pioneer AVIC D3

2001 Ford F550 XLT, Torreador Red,
7.3 Diesel, auto trans. chrome 19.5's
Rugby Dump Body, painted to match.

2004 F250 Reg Cab Long Box XL. Upgraded chrome grille and clear headlights from '04 Harley. Lariat Alloys and Factory CD/Cassette (Totaled 10/2/09)

1995 F350 Crew Cab Dually XLT, 460 Gas hog.
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post #2 of 12 (permalink) Old 03-24-2006, 01:16 AM
 
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I've had the CPS give out completely and the truck just die and I've also had it wear out little by little causing it to run rough and loose power slowely. The easiest way to tell if you're having problems is to pull codes. If you don't have a Superchips or other programmer that can do that you should buy one and check it out. If it works then your good to go. If it doesn't then you have a spare, you'll need it eventually.
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post #3 of 12 (permalink) Old 03-24-2006, 01:32 AM
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Quote:
Originally Posted by dog3434
I've had the CPS give out completely and the truck just die and I've also had it wear out little by little causing it to run rough and loose power slowely. The easiest way to tell if you're having problems is to pull codes. If you don't have a Superchips or other programmer that can do that you should buy one and check it out. If it works then your good to go. If it doesn't then you have a spare, you'll need it eventually.


:agreed: :agreed:

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post #4 of 12 (permalink) Old 03-24-2006, 02:18 AM Thread Starter
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I've heard something about slow to start and Tach not moving while starting the truck. Any truth to this?

John - 2004 Harley F250 Black/Competition Orange All the factory goodies, '05 Black Harley Headlights, Silverline 4'' Duals W/5'' Chrome Tips, Edge Platinum, Sirius Satellite,Pioneer AVIC D3

2001 Ford F550 XLT, Torreador Red,
7.3 Diesel, auto trans. chrome 19.5's
Rugby Dump Body, painted to match.

2004 F250 Reg Cab Long Box XL. Upgraded chrome grille and clear headlights from '04 Harley. Lariat Alloys and Factory CD/Cassette (Totaled 10/2/09)

1995 F350 Crew Cab Dually XLT, 460 Gas hog.
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post #5 of 12 (permalink) Old 03-24-2006, 02:29 AM
 
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I had acps go out and my truck ran fine till I shut it off in the drive and the next mourning wouldn't start just crank.
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post #6 of 12 (permalink) Old 03-24-2006, 02:31 AM
 
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I was told if it is a cps when you crank the engine and the tack jumps then it is the cps that is what mine did
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post #7 of 12 (permalink) Old 03-24-2006, 02:35 AM Thread Starter
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Quote:
Originally Posted by Puller 250
I was told if it is a cps when you crank the engine and the tack jumps then it is the cps that is what mine did
Ah ha, so I was either misinformed or misinterpreted what I was told.

John - 2004 Harley F250 Black/Competition Orange All the factory goodies, '05 Black Harley Headlights, Silverline 4'' Duals W/5'' Chrome Tips, Edge Platinum, Sirius Satellite,Pioneer AVIC D3

2001 Ford F550 XLT, Torreador Red,
7.3 Diesel, auto trans. chrome 19.5's
Rugby Dump Body, painted to match.

2004 F250 Reg Cab Long Box XL. Upgraded chrome grille and clear headlights from '04 Harley. Lariat Alloys and Factory CD/Cassette (Totaled 10/2/09)

1995 F350 Crew Cab Dually XLT, 460 Gas hog.
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post #8 of 12 (permalink) Old 03-24-2006, 03:00 AM
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It is not a fer sure thing. I've had trucks that the tach would move and not move.
Cps is a pesky bugger

'00 cc f 350 a few mods, and a bts tranny.

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post #9 of 12 (permalink) Old 03-24-2006, 03:32 AM
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Mostly, I've heard that you'd notice the truck dying after a short warm up. Let 'er cool off and maybe start again. Even heard about one feller took his truck to the Frd dlr who charged him to diagnose the truck, fixed nothing. Truck died on the way home from the dlr! Best bet, keep a spare and a 10mm socket! :shrug:

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post #10 of 12 (permalink) Old 03-24-2006, 02:08 PM
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the tach is a good indicator in the early trucks because the tach gets its signal from the CPS so if the tach moves then good signal from the CPS. If it doesn't then it's bad. The problem is that somwhere in the model years of the SD they changed where the tach gets the signal from so it will not register until the engine is actually running anyway. If memory serves me correctly it's somewhere in the '02 model year, but I'm not ceritan about that.


Some of the symptoms that people have noted on other boards are a skipping in the idle or other odd erratic problem, dying for split seconds while you're driving down the road, some report dying completely once you get to the side of the road it'll start back up but may die in a few hundred feet.

For reference part numbers
(Ford) F6TZ-12K073-A 94-96
(Ford) F7TZ-12K073-A 97+
(International) 1821720C99 (below engine 375548)
(International) 1825899C93 (above engine 375548)
(International) 1807339C92 DT466E model reported to advance timing and better signal.

For reference you can use any CPS in any PSD the difference is the material of the electrical contacts. The material in the wiring harness was changed. When electrical current is passed through dissimilar metals corrosion occours. The corrosion occours very slowly so for a short term answer you can use any or for long term use use some dielectric grease on the contacts and there will be no problems.

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