7.3 diesel stalls

solimar
35

Asked by solimar 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

papa
Not Active

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

solimar
35

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

papa
Not Active

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.

solimar
35

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.

papa
Not Active

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

solimar
35

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.
papa
Not Active

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 32,972 nationwide F-250 Super Duty listings starting at $1,995.
ZIP:

Search Ford F-250 Super Duty Questions

Ford F-250 Super Duty Experts

#1 kbro
kbro
Reputation 310
#2 dandyoun
dandyoun
Reputation 170
#3 Tom Demyan
Tom Demyan
Reputation 140
View All

Related Models For Sale

Used Ford F-350 Super Duty"
417 Great Deals out of 21,391 listings starting at $2,997
Used Ford F-150"
2,222 Great Deals out of 179,533 listings starting at $1,295
Used Chevrolet Silverado 2500HD"
453 Great Deals out of 37,968 listings starting at $3,995
Used Dodge Ram Pickup 2500"
228 Great Deals out of 5,105 listings starting at $3,900
Used Ford F-250"
5 Great Deals out of 681 listings starting at $2,495
Used GMC Sierra 2500HD"
195 Great Deals out of 14,999 listings starting at $4,850
Used Chevrolet Silverado 1500"
2,000 Great Deals out of 172,854 listings starting at $950
Used Dodge Ram Pickup 1500"
815 Great Deals out of 15,056 listings starting at $1,995
Used Toyota Tundra"
466 Great Deals out of 24,861 listings starting at $3,700
Used Ford F-350"
354 listings starting at $3,999
Used Dodge Ram Pickup 3500"
121 Great Deals out of 2,036 listings starting at $3,999
Used Ford F-450 Super Duty"
40 Great Deals out of 1,206 listings starting at $13,900
Used GMC Sierra 1500"
819 Great Deals out of 60,721 listings starting at $1,995
Used Ram 2500"
166 Great Deals out of 23,179 listings starting at $11,500
Used Chevrolet Silverado 2500"
11 Great Deals out of 358 listings starting at $3,995