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post #1 of 11 Old 01-28-2008, 06:52 PM Thread Starter
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Question Need help with 7.3

I have a early 1999 F350 7.3 that will only run for about 30 seconds at a time and then just dies. Sometimes it will start up right away, other times I have to crank it a little bit longer. Either way it always starts back up but then dies after 20 or 30 seconds. I have had no problems up to this point and have 189,000 miles on the motor. I replaced the fuel pump thinking that was the problem with no success. I would rather have some direction instead of changing parts all day long. Any information would be greatly appreciated.
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post #2 of 11 Old 01-28-2008, 06:57 PM
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cam position sensor??

if you see a light at the end of the tunnel, it's probably just a photon torpedo
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post #3 of 11 Old 01-28-2008, 07:21 PM Thread Starter
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Thanks, I'll try that next.
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post #4 of 11 Old 01-28-2008, 07:24 PM
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When cranking does your tach move?

RICK


97 F350 CREW CAB 4x4, 7.3 TURBO DIESEL, DIY INTAKE , TW TUNES
GRAND ROCK POWERFLOW STACK KIT W/5" MITRES
3.55 REARS, 3" DOWNPIPE, FPR SHIMMED WITH GAUGE

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post #5 of 11 Old 01-28-2008, 07:31 PM Thread Starter
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Yes, and while it is runing everything appears to be fine. I can hold the throttle at any range and it will run fine up to the point of 20 or 30 sec and then it dies again. If I do that it is much harder to get started again though.
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post #6 of 11 Old 01-28-2008, 07:35 PM
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Hmmmm.....that's odd. Well the CPS is relatively cheap if that's not it no biggie. They usually act this way when there on their way out.

RICK


97 F350 CREW CAB 4x4, 7.3 TURBO DIESEL, DIY INTAKE , TW TUNES
GRAND ROCK POWERFLOW STACK KIT W/5" MITRES
3.55 REARS, 3" DOWNPIPE, FPR SHIMMED WITH GAUGE

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post #7 of 11 Old 01-29-2008, 07:29 PM Thread Starter
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Thanks for the help. I changed the CPS today and that seems to have fixed all.
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post #8 of 11 Old 01-30-2008, 09:25 AM
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Quote:
Originally Posted by hardway3005 View Post
Thanks for the help. I changed the CPS today and that seems to have fixed all.
where did you get it and how much did you spend?? i replaced mine mid December 2007. my local Fraud dealer had one for $30.

if you see a light at the end of the tunnel, it's probably just a photon torpedo
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post #9 of 11 Old 01-30-2008, 09:42 AM
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and dont forget the recall on the cps
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post #10 of 11 Old 01-30-2008, 08:43 PM Thread Starter
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I bought it at a local parts store (NAPA) for $30.00 and thought that was pretty cheap.
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