The air is cold driving in the city and turn hot when on the highway. When I turn the truck off I here a hissing sound. What could causes this?
Jul 26, 2011 at 8:13 PM
When I turn the truck off I here a hissing sound?
2004 DODGE RAM
DMACK1
- MEMBER
- 2 POSTS
- FOLLOW
Advertisement
O.K. not expansion valve but fan clutch is the problem. When engine cold fan will turn easy at op temp fan should be hard to tuen by hand. check out and replace
Image (Click to enlarge)
May 13, 2021 at 12:20 PM
P.S. if fan clutch checks out need guage readings
May 13, 2021 at 12:20 PM
Fan clutch is easy to turn. It will not let me connect the gage, and freon comes out.
May 13, 2021 at 12:20 PM
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.