[lpsventures]

My 06 F350 (SRW) will not go into 4 wheel drive with the hubs in auto, but will go into 4wd with the hubs locked. Anybody know what the problem may be?

Thanks

Larry

 

[gmoore]

Sounds like you have a vacuum leak either in the auto hubs or in the line from the vacuum pump (on top of the right inner fender) or your vacuum pump is bad.

 

[OMCUSNR]

Sounds like you have a vacuum leak either in the auto hubs or in the line from the vacuum pump (on top of the right inner fender) or your vacuum pump is bad.

X2. Check if your heater will only go to defrost. sure sign of a vacuum leak "somewhere".

OMC

 

[Cwby]

I have the same problem with my '04. It is most likely a vacuum leak in the lines that go to your hubs, or in the hubs themselves. I have to lock my hubs manually and when I shift the transfer case to 4WD the AC or heater goes to defrost. That's the sign of a vacuum leak, the air shifting to defrost.

 

[RACERXF250]

My 06 F350 (SRW) will not go into 4 wheel drive with the hubs in auto, but will go into 4wd with the hubs locked. Anybody know what the problem may be?

Thanks

Larry

MY F250 WAS DOING THE SAME. SOME TYPE OF VACUUM LEAK. DEALER FIXED IT.:thumbsup:

 

[lpsventures]

Turns out it was the seals that had let go. Dealer fix at $600.00 Canadian.

Thanks for the help

Larry