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Dec 19, 2009 | 01:31 PM

Joe28443

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Joe28443

Joined: Jul 2009

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From: Hampstead NC

CPS

will a bad CPS throw a code?? My Ex will not seem to turn over. Its blowing smoke like crazy however it is about 30 degrees outside. Other than a battery what else might it be?

Dec 19, 2009 | 01:40 PM

tdpower

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I would guess a problem with the glow plugs or gpcm. Also, how old is your oil? If it is too thinned out this will cause the injectors not to fire. Also, try to check your cranking voltage on the batteries. Should be greater than 10vdc.

Dec 19, 2009 | 01:41 PM

racincowboy

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From: Happy Valley Or

More then likely it is the glow plug relay (GPR)has failed you. If you have a test light you can test it to see if the GPR is working. Let me see if I can find a pic and it will show you how to test the gpr that is the most common problem with these trucks. How long did you crank the engine?

The other thing you can try is plugging it in for a couple hours and if it starts easily I would almost bet it is your gpr. You can also try searching GPR test on the forum and it will have a huge amount of info. Let me see if I can find a pic that points it out and then figure out how to post it. I am sure Chris or someone will beat me to it though.

Lance

Dec 19, 2009 | 01:48 PM

Riffraff Diesel

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These guys have you handled but maybe this thread will help with testing.

https://www.ford-trucks.com/forums/7...wmriceman.html

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Dec 19, 2009 | 01:52 PM

racincowboy

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From: Happy Valley Or

Quote:

Originally Posted by Riffraff Performance

These guys have you handled but maybe this thread will help with testing.

https://www.ford-trucks.com/forums/7...wmriceman.html

Thanks Clay. Your a life saver. I really gotta put all those pics in a test folder or something and learn how to post them. Once again Riff Raff to the rescue.

Dec 19, 2009 | 02:05 PM

tdpower

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If he has an excursion he should have a glow plug control module and not a GPR. I assume that is what he means when says "Ex".

Dec 19, 2009 | 02:06 PM

Joe28443

Thread Starter

Joe28443

Joined: Jul 2009

Posts: 1,163

Likes: 4

From: Hampstead NC

Its more than likely the GPCM, I tested the batteries and they are fine. I know I have a bad GPCM (I talked to Clay last week) I have not had the truck long and it was warm outside when I bought it. Well now that its cold, I am starting to have this problem. Clay, I will call you on Monday and order this part so I can get back on the road. Do you have any CPS's I want to keep one as a spare because I am sure I will need it one day. Thanks again to everyone for all the quick replies.