Mechanics

A/C SWITCH TO DEFROST AT 60-70 MPH, CRUISE CONTROL NOT WORKING

1997 Dodge Ram • 331 miles

I have replaced all vac check valves, vac tested all a/c lines in cab including vac canister. I hear what sounds like a large vac leak when pressing the accelerator but can not track it down. New engine block approx 6K on it, sprayed around engine on change purs like a cat. I am at my whits end please help.
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Tmaj9447
December 19, 2011.



Splice a vac gauge into line and watch what happens.

Tiny
Fixitmr
Dec 19, 2011.
Where do you recommend a good location to splice in a vac gauge, before check valve at manifold, after check valve, or other location. Also what am I looking for?

Tiny
Tmaj9447
Dec 19, 2011.
Splice into hvac line in cab pre controls.

Tiny
Fixitmr
Dec 20, 2011.