2000 E350, only defrost vents work
Thanks in advance for any help or thoughts. Situation, AC works, heat works, but they will only blow through defrost vents, will not change to dash or floor vents. Anyone have a similar issue? a...
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My 2005 E450 did the same thing.
The a/c vacuum line check valve is not working.
The repair pays 15hrs, since the A/C case has to be removed.
I checked mine with a vacuum pump. The check valve and the vacuum reservoir were bad.
I cut a hole in the right front fender well to access the vacuum hoses.
I replaced the check valve and relocated the new vacuum reservoir to the inside of the fender.Since I could not remove the OEM reservoir.
The sheet metal was pushed back into place and sealed with Eternabond.
The a/c vacuum line check valve is not working.
The repair pays 15hrs, since the A/C case has to be removed.
I checked mine with a vacuum pump. The check valve and the vacuum reservoir were bad.
I cut a hole in the right front fender well to access the vacuum hoses.
I replaced the check valve and relocated the new vacuum reservoir to the inside of the fender.Since I could not remove the OEM reservoir.
The sheet metal was pushed back into place and sealed with Eternabond.
