AC works good on highway speeds . But at a stop or idel. It blows warm air. What are thinking i need to look for?

160

Asked by mlopez38 May 08, 2015 at 07:11 PM about the 2008 Ford F-450 Super Duty Lariat Crew Cab LB DRW 4WD

Question type: Maintenance & Repair

Took it to a mechanic He put on ac gauges
and said theres a restriction in the system it
gave a high psi reading.over 250pis

10 Answers

160

no temperature stays the same This happened after idle Ac pully tensioner bearings Went out I replaced the pulley

1 people found this helpful.
160

Well i took it to a shop had a mechanic Put gauges red gauges gave a reading over 250psi. He said theres a restriction in the system.. That i would have to take it to the dealer ship

1 people found this helpful.
144,725

It explainotory,run,s good on high way,but off at idle,go have the sytem vacummed,and filled proper.

1 people found this helpful.
160

Ive had the truck for over a year ac has been working fine. Till now.. Would it be best to change out orifice tube as well?

160

Yes new pully is the same size. Not sure what the low reading was. But tomorrow morning will get a second opinion at midas they have free ac inspections

2 people found this helpful.
160

Ok i figured out the problem electrical connections On the fan clutch wasn't seated properly .made the corrections.all works great now .thanks for yalls in puts.

6 people found this helpful.
144,725

Good to know mlopez38,another good answer to add to the book,s.

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