cam sensor need help - Ford Powerstroke Diesel Forum
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post #1 of 19 Old 04-29-2010, 08:08 PM Thread Starter
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cam sensor need help

i have a 03 7.3 and it starts hard, I know their was a cam sensor recall could that cause my problem since i have not changed the sensor

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post #2 of 19 Old 04-30-2010, 06:46 AM
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Probably not.....

A bad CPS is more likely to cause it to quit running down the road or not start at all.

A hard start could be many things as everything has to be "just right" to catch quickly.

Look up above at the "Stickys for some suggestions
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post #3 of 19 Old 04-30-2010, 10:34 AM Thread Starter
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thanks

I figured it wasent the cps, it cranks over fine and runs great when started. i also had a exhaust back pressure code EBR sensor, thats the only other code it put up.

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ARB FRONT BUMPER & 15,000LB WARN
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post #4 of 19 Old 04-30-2010, 10:37 AM
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i would get tht cps changed out anyways its a free part with free labor, and several guys have told me that sometimes ifthe cps is goin out, it'll get harder to start and then eventually it of course will not start.

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post #5 of 19 Old 04-30-2010, 11:30 AM
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When I dont change my oil often enough it takes longer to start.... whens the last time you changed yours
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post #6 of 19 Old 04-30-2010, 11:54 AM
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Every time my CPS went bad it would run for 30sec and die and it would crank up and start and run for 30 more sec and die
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post #7 of 19 Old 05-01-2010, 03:25 PM Thread Starter
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I should see if my truck has the bulliten out for the cps change, it should. I just got the truck so havent had time yet to look into the cps. But when the truck starts it runs good. I noticed that once i pulled the superchip out of it, it started a little quicker,not much but a little. If my cps was going bad the truck prolly wouldnt run great. i need to get it back from the body shop so i can work on it. And i did just change the oil so its not that and i changed the fuel filter and no the air clearner is clean. It acts like the fuel is not priming like its not getting the fuel it needs on the start up.

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post #8 of 19 Old 05-01-2010, 03:29 PM
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could be a bad fuel pump, glow plugs going out,or the Glow plug relay is cracked or burnt up, and thats just for starts

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post #9 of 19 Old 05-01-2010, 03:32 PM
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When the CPS is bad it just works intermittently, it's either sending a signal to the PCM that the engine is turning or not - Not sending no signal for the first seconds every time you go to start, and then works fine the rest of the time.

It will cause the engine to just quit and then after it cools-off (or something) for 10 mins it just works again. Sometimes for weeks !

Even if it's been changed, you should get a spare for the glovebox anyway and carry one with you. They are easy to change and you can always try it to see if it'll cure a problem.
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post #10 of 19 Old 05-01-2010, 03:32 PM Thread Starter
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But its 70 here i was told that anything above 50 did not require the glow plugs

2014 6.7 CCSB F-250 XLT 4X4, TUXEDO BLACK

SOLD:
2003 7.3 STD CAB F-350 XLT, BLACK
4" PRO COMP W/ BILSTEIN SHOCKS
35X12:50 PRO COMP EXTREME A/T
16X10 CEPEK DC-2
DP-TUNER F5 7 POS
ARB FRONT BUMPER & 15,000LB WARN
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