7.3 diesel stalls

45

Asked by Apr 05, 2011 at 06:08 PM about the Ford F-250 Super Duty

Question type: Maintenance & Repair

When it's cold, my 7.3 diesel starts up and during warm up it goes into fast idle. When the fast idle disengages, the engine stalls. I'll be driving along and it'll stall even at 40mph as if I turned the ignition off. It starts right up after each stall then it runs fine for the rest of the day. Replaced the fuel filter and the cam position sensor with no change. I connected an OBDll and got 0 readings. Anyone out there have a similar problem?

7 Answers

check the cold start valve,could be sticking or going bad.

1 out of 1 people think this is helpful.
45

Thanks for the advice...Is the cold start valve known by another name? I looked it up in the Ford manual and it's not mentioned at all. Thnx again

NO its not in the manual,your local parts store will have it,that is what its called,dont buy from advance auto or autozone,go to your independent parts store,their parts are a lot better & reliable.

45

Thanks for the info. I've searched every auto store including a Ford parts dealer and no one knows anything about a "cold start valve". Where is it located on the engine? I really appreciate your input. I've heard that I may have some loose connections but I have to remove the valve covers. Before I do that, I want to explore other possibilities. Thanks again for your help.

tell them it is the part that fires the fuel during start up..

45

I ran the truck all summer without any problems but as soon as the air temperature got colder, the problem resurfaced and the stalling gradually got worse. I was fortunate to find a pair of ex-Ford dealer mechanics who opened up their own shop in Forked River, NJ who diagnosed it and found a faulty HP chip on the computer to be the cause. They removed the chip, re-flashed the CPU and it runs better than ever. They specialize on Ford diesel engines and transmissions and I would highly recomend them to anyone looking for reasonably priced quality work. They didn't even charge for the diagnosis.

1 out of 1 people think this is helpful.

glad you got it fixed.

Your Answer

Add photo

Related Questions

F-250 Super Duty

Looking for a Used F-250 Super Duty in your area?

CarGurus has 43,316 nationwide F-250 Super Duty listings starting at $1,900.

ZIP:

Search Ford F-250 Super Duty Questions

UK Questions

Are you a UK consumer? CarGurus now has a discussion forum in the UK.

Ford F-250 Super Duty Experts

#1 Tracy Hooks
Tracy Hooks
Reputation 710
#2 FordNut
FordNut
Reputation 650
#3 kbro
kbro
Reputation 590
View All

Related Models For Sale

Used Ford F-350 Super Duty
415 Great Deals out of 26,266 listings starting at $2,999
Used Ford F-150
3,017 Great Deals out of 207,758 listings starting at $1,000
Used Chevrolet Silverado 2500HD
383 Great Deals out of 27,082 listings starting at $2,998
Used Dodge Ram 2500
158 Great Deals out of 5,617 listings starting at $2,950
Used Ford F-250
559 listings starting at $1,342
Used GMC Sierra 2500HD
146 Great Deals out of 13,208 listings starting at $3,500
Used Chevrolet Silverado 1500
2,510 Great Deals out of 152,118 listings starting at $1,500
Used Ram 2500
165 Great Deals out of 28,777 listings starting at $9,888
Used Ford F-450 Super Duty
45 Great Deals out of 2,644 listings starting at $8,497
Used Toyota Tundra
660 Great Deals out of 28,287 listings starting at $2,798
Used GMC Sierra 1500
972 Great Deals out of 60,125 listings starting at $1,299
Used Dodge Ram 1500
500 Great Deals out of 13,071 listings starting at $1,495
Used Ford F-350
342 listings
Used Dodge Ram 3500
97 Great Deals out of 2,338 listings starting at $5,000
Used Toyota Tacoma
704 Great Deals out of 31,954 listings starting at $2,750