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 34,757 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"
449 Great Deals out of 22,433 listings starting at $2,850
Used Ford F-150"
2,635 Great Deals out of 168,933 listings starting at $1,500
Used Chevrolet Silverado 2500HD"
533 Great Deals out of 40,174 listings starting at $2,995
Used Dodge Ram Pickup 2500"
228 Great Deals out of 5,138 listings starting at $2,495
Used Ford F-250"
6 Great Deals out of 665 listings starting at $2,499
Used GMC Sierra 2500HD"
193 Great Deals out of 15,154 listings starting at $3,995
Used Chevrolet Silverado 1500"
2,576 Great Deals out of 170,343 listings starting at $950
Used Dodge Ram Pickup 1500"
875 Great Deals out of 15,218 listings starting at $1,222
Used Toyota Tundra"
523 Great Deals out of 25,884 listings starting at $2,995
Used Ford F-350"
355 listings starting at $6,700
Used Dodge Ram Pickup 3500"
150 Great Deals out of 2,112 listings starting at $3,999
Used Ram 2500"
176 Great Deals out of 23,477 listings starting at $12,900
Used Chevrolet Silverado 2500"
13 Great Deals out of 345 listings starting at $2,995
Used Ford F-450 Super Duty"
40 Great Deals out of 1,255 listings starting at $9,988
Used GMC Sierra 1500"
984 Great Deals out of 62,710 listings starting at $990