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delayed a/c operation?? 10 min. after startup!!


papiichuulo
04-28-2006, 11:22 PM
Anybody have any ideas? I have an 03 crown vic intercepter with a new problem for me. On a cold start, the a/c clutch doesn't engage until about 10 min. later, then the a/c begins to cool. I have not run into this problem before, plz help!:banghead:

fleettech
04-30-2006, 08:34 AM
swap the A/C relay out with one of the others (cheap test) We have had a bunch of them act like that and most of the time its the relay going out

papiichuulo
05-24-2006, 10:41 PM
I already tried that, it didn't work. Any other suggestions? Do you know of any ways to test the high and low side cycling switches?

corning_d3
05-24-2006, 10:45 PM
Maybe your low on refridgerant, and when the system gets heated up, the pressure increases enough to kick on the compressor.

papiichuulo
05-25-2006, 07:58 AM
pressure is good when the system finally kicks on.

corning_d3
05-25-2006, 01:19 PM
The PCM controld A/C operation, so checking for trouble codes would be a good thing to do. Even if the check engine light is off, codes may be stored. A cheap autozone scanner may not be able to pull all the codes, but a good snap-on or dealer scanner will. You can also perform tests on the system with a good tool. I'd avoid probing around on the a/c system. You run the risk of feeding back high voltage into the PCM.

papiichuulo
05-25-2006, 02:30 PM
u r right, i should have thought about that. I hope the nemisys from otc will do the job. I will look into that and let you know what happens, thanks!

papiichuulo
05-26-2006, 12:40 PM
Good call!!! The little nemisys pulled a P1462 code, a/c press sens circuit low input. hhmmmm......

papiichuulo
05-26-2006, 12:40 PM
Good call!!! The little nemisys pulled a P1462 code, a/c press sens circuit low input. hhmmmm......

papiichuulo
06-12-2006, 11:33 PM
I hate it when that happens..... the codes did absolutely nothing for me. It turned out to be a temperamental friggin relay. It worked when it felt like it. When I checked it the first time around it didn't make a difference, this time it fixed it.........aarrrgggggghhhhh!!!!!!!!! LOL

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