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 34,133 nationwide F-250 Super Duty listings starting at $2,995.
ZIP:

Search Ford F-250 Super Duty Questions

Ford F-250 Super Duty Experts

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

Related Models For Sale

Used Ford F-350 Super Duty"
472 Great Deals out of 21,935 listings starting at $2,995
Used Ford F-150"
2,569 Great Deals out of 174,400 listings starting at $1,746
Used Chevrolet Silverado 2500HD"
538 Great Deals out of 38,165 listings starting at $2,500
Used Dodge Ram Pickup 2500"
256 Great Deals out of 5,219 listings starting at $1,999
Used Ford F-250"
4 Great Deals out of 709 listings starting at $3,595
Used GMC Sierra 2500HD"
183 Great Deals out of 14,746 listings starting at $3,995
Used Chevrolet Silverado 1500"
2,466 Great Deals out of 169,847 listings starting at $950
Used Dodge Ram Pickup 1500"
841 Great Deals out of 15,428 listings starting at $1,222
Used Ford F-350"
357 listings
Used Toyota Tundra"
507 Great Deals out of 25,866 listings starting at $3,398
Used Dodge Ram Pickup 3500"
140 Great Deals out of 2,142 listings starting at $3,999
Used Ram 2500"
175 Great Deals out of 22,596 listings starting at $11,500
Used Ford F-450 Super Duty"
35 Great Deals out of 1,218 listings starting at $11,995
Used GMC Sierra 1500"
943 Great Deals out of 61,746 listings starting at $990
Used Chevrolet Silverado 2500"
10 Great Deals out of 338 listings starting at $4,000