2006 f150 air conditioning shuts off at stops
Will start blowing hot air intermittently at stops and then once truck is moving cool air
comes back on. Has done this from the beginning had compressor replaced under
warrently but still same result. Computer chip malfunction?
If the system is fully charged and pressures are reading correctly then I would suspect the cycling switch to be adjusted incorrectly or the air flow is restricted. Is your truck equipped with an auxiliary A/C cooling fan?
Yes system is fully charged and reading correctly, at least that is what the service tech checks off on his sheet. I am not sure about the extra fan. Where would I look for it? Really flying blind when it comes to these things. My dad would be shamed to know I have no idea....
The fan would be located in the engine compartment if it is a puller, behind the grill if it is a pusher and it would turn on when the A/C is turned on so you should be able to hear it running with the A/C on, engine idling. I am still suspicious of the pressure switch but without the pressure readings I can't say that is it.