99 7.3 died now won't start

[ridgerunner98570]

It was 5 degrees out and I started my truck to warm it up. When idle smoothed out I went into the house. 10 minutes later I come out and truck is not running. I try to restart by glow plug light doesn't come on and engine cranks over good but no start. The interior was warm so engine should have been warm enough to restart. Could it be the CPS? They checked it last year on recall but said I had the good one so they did not replace it. I've had the truck for 9 years and have never replaced the CPS. Other than losing two injectors at different times this last summer. It has always run good. Any suggestions?

[dazdillenger]

Does the tach move while cranking, or does it sit at 0? Regardless of which cps you have, they do go bad. Just because you have the upgraded one doesn't mean it's perfect!

[ridgerunner98570]

Originally Posted by dazdillenger

Does the tach move while cranking, or does it sit at 0? Regardless of which cps you have, they do go bad. Just because you have the upgraded one doesn't mean it's perfect!

I just checked it. The tach does not move. And the glow plug light does not come on. It spins over good though.

[dazdillenger]

If that tach isn't moving, more than likely the CPS is bad. Replace it, I bet she starts right up.

[ridgerunner98570]

Originally Posted by dazdillenger

If that tach isn't moving, more than likely the CPS is bad. Replace it, I bet she starts right up.

Thank You, I'll do that. The only store close to me is a NAPA. Are there chips good? And what should I tell them to get the right one?

P.S. Thank You for the info, you are a real help.

[dazdillenger]

With the failure rate of the 7.3 cps, I wouldn't use anything other than OEM (ford or international). Good luck!

[NoRalPh]

Wait a min.... The tach isn't going to move if the PCM isn't running.

If your WTS (Glow Plug Light) isn't coming On, chances are the PCM is Not running now. You're not going to see a tach signal then.... (although, by ALL means, Everybody should have a spare CPS - so go get one!)

To start though, I'd be looking at the fuses because it is VERY common this time of year to have your Fuel Heater blow fuse #30 and kill power to the PCM. So, check them ALL (especially #03-19-22) and see if you don't have a blow one. If you find #30 bad you'll need to unplug that heater at the bottom of the fuel bowl or it will just blow again

[ridgerunner98570]

Originally Posted by NoRalPh

Wait a min.... The tach isn't going to move if the PCM isn't running.

If your WTS (Glow Plug Light) isn't coming On, chances are the PCM is Not running now. You're not going to see a tach signal then.... (although, by ALL means, Everybody should have a spare CPS - so go get one!)

To start though, I'd be looking at the fuses because it is VERY common this time of year to have your Fuel Heater blow fuse #30 and kill power to the PCM. So, check them ALL (especially #03-19-22) and see if you don't have a blow one. If you find #30 bad you'll need to unplug that heater at the bottom of the fuel bowl or it will just blow again

Can someone tell where the #30 fuse is located at?

[NoRalPh]

In cab, behind he panel under the steering wheel should have a#30 next to it

Do you have an owners Manual?

[ridgerunner98570]

Well, I replaced the CPS and the #30 relay, and still no start. Shop cycled the glow plugs and it still didn't start. I am driving down to the shop to test all the fuses myself instead of paying the $100.00 dollars an hour for them to do it. Any suggestions for what else I should look at?