Hmmmm.
Previously perfect truck now has two problems
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Senior User
Joined: Mar 2004
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From: s.f. bay area
Previously perfect truck now has two problems
Well, my previously perfect 2004 F350 truck now has two problems. The worst is the A/C quit working during 110 degree heat on a week long towing trip. The A/C still blows cold air, but it only comes out of the defroster vent now. Apparently this is the fail safe mode. I took it to a dealer that was nearby during the trip and they diagnosted a "bad" vacuum motor, so I have no vacuum to control the registers. It also renders the water heater bypass valve inoperable.
To make a long story short, cold air blowing up on a hot windshield doesn't really cool the crew cab off much when it is that hot outside
Of course the part wasn't in stock, so I will have to wait to get it fixed.
The day before, the check engine light came on, and was diagnosted as a bad "water in fuel sensor". Naturally this part wasn't in stock either. Trying to get repairs done while you are on a trip is not very much fun
This is an 05/04 build with 4800 miles on it.
To make a long story short, cold air blowing up on a hot windshield doesn't really cool the crew cab off much when it is that hot outside
Of course the part wasn't in stock, so I will have to wait to get it fixed.The day before, the check engine light came on, and was diagnosted as a bad "water in fuel sensor". Naturally this part wasn't in stock either. Trying to get repairs done while you are on a trip is not very much fun
This is an 05/04 build with 4800 miles on it.
Post Fiend
Joined: Oct 2002
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The Water in fuel sensor has been a KNOWN issue and replaceable free for months...
(and this is NOT a show stopper ) it's a false positive that you can continue to drive right through... I did for about a month until I wanted to give up the X to get it fixed...
it did NOT set a check engine light on mine ... just the water in fuel lamp...
You might suggest they pull one of a truck in the lot to fix the pump...
(and this is NOT a show stopper ) it's a false positive that you can continue to drive right through... I did for about a month until I wanted to give up the X to get it fixed...
it did NOT set a check engine light on mine ... just the water in fuel lamp...
You might suggest they pull one of a truck in the lot to fix the pump...
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From: Central Texas
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From: Broken Arrow, OK.
I don't know if this will help you or not but under the glove compartment there is a small part that has 3 vac hoses that run to it, my wife decided to really stretch out in the front and had her feet up there and must have kicked the vac hoses and loosened them and after she did the ac would only run out of the defroster. After looking at it and plugging it back in tight I had my AC back out of all vents. May be a quick fix.
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From: s.f. bay area
Yea, I knew about that one, it was the first thing I checked. The Tech at the dealer supposedly determined that the vacuum motor was bad. I always thought that the vacuum came from the engine intake manifold, but maybe on a diesel this doesn't work? Anyway, he said if I could pull a vacuum manually from an external source to charge the vacuum canister, and then don't change the panel register source selection, the system should hold the vacuum and allow the panel registers to source air. Now that I am home from my trip, I will allow a dealer to deal with it. I just hope the initial diagnosis can be used to order parts so I don't have to go in twice, once to diagnose again, order parts, and then a second time when the parts come in to get them installed.
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That is correct, a diesel has no throttle plate, so it has no manifold vacuum. (It actually even has manifold *pressure*, because of the turbo!) So you get a little electric vacuum pump bolted under the hood to provide the source for all those little vacuum operated accessories. Sounds like yours went bad, which is unusual eith such a new truck, but I guess it was just one of those random things.
Duncan
Duncan
