7.3 no start
Thread Starter
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Laughing Gas
Joined: May 2019
Posts: 934
Likes: 67
7.3 no start
Hey guys, I need your knowledge yet again.
My new-to-me 2002 f250 7.3 automatic 4x4 is not starting, just cranks endlessly seeming to almost start but not quite.
I had started it on a cold morning, let it run for a bit to warm up, and drove some 100ft to lose power, throttle did nothing, truck limped at idle back to driveway. Throttle momentarily revved engine and tac went to 1500, but only once. Turned off truck to do research, now will not start. Replaced cps and icp (oil inside connector) with rock auto parts. No change. Have oil pressure on dash guage but no rpm on tac when cranking.
Bad cps? I noticed everyone seems down on aftermarket parts for these. Unfortunately I noticed that after ordering the parts.
Any advice would be appreciated. Long way to dealer for oem parts.
My new-to-me 2002 f250 7.3 automatic 4x4 is not starting, just cranks endlessly seeming to almost start but not quite.
I had started it on a cold morning, let it run for a bit to warm up, and drove some 100ft to lose power, throttle did nothing, truck limped at idle back to driveway. Throttle momentarily revved engine and tac went to 1500, but only once. Turned off truck to do research, now will not start. Replaced cps and icp (oil inside connector) with rock auto parts. No change. Have oil pressure on dash guage but no rpm on tac when cranking.
Bad cps? I noticed everyone seems down on aftermarket parts for these. Unfortunately I noticed that after ordering the parts.
Any advice would be appreciated. Long way to dealer for oem parts.
FTE Leadership Emeritus
Joined: May 2014
Posts: 27,346
Likes: 5,941
From: Lake Hartwell, GA
A good place to "start" is at the link below. Then you can let us know what you find that will help us get your truck going again.
No start flow chart
No start flow chart
Thread Starter
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Laughing Gas
Joined: May 2019
Posts: 934
Likes: 67
One of the things researched that led to the new cps and the reason I suspect I may have got a bad part. Flow chart says cps if no tac movement while cranking. I went to the 7.3 tech folder first thing.
Thread Starter
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Laughing Gas
Joined: May 2019
Posts: 934
Likes: 67
Read about fuse 30 for fuel bowl heater as well, but symptoms seemed to indicate cps from whhat I read. I am no mechanic, however.
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Laughing Gas
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Logistics Pro
Joined: Oct 2011
Posts: 3,953
Likes: 120
From: Mcdonough, GA
Not all scanners work with our trucks. If you have an android phone you can get an obd II adapter and read most of what you need to