a/c question

[pnhigg]

I have just gotten my a/c going.
New compressor, new orifice tube, new dryer.
System was flushed and charged, and it cools great, but the compressor cycles on and off every 10-15 seconds with the engine speed any more than idle.
The system is a hybrid.
The a/c system is generally stock from a 92 fullsize, converted to 134A, with a 5.3 engine and pcm etc.
Does anyone know which wire I need to hook up to the pcm for the engine rpm to raise when the a/c compressor engages.
Also how often should the compressor be cycling?


Thanks guys

[pnhigg]

Anyone know which wires to hook up from the truck pcm to make the engine idle increase when the compressor kicks on.
With the cam I have, the truck almost dies everytime the compressor engages

[Hit Man X]

Did you pull a vac on the system?

[pnhigg]

Yes. We recharged the system yesterday and it seems better.
While the interior is hot the system stays engaged but once the cab cools off it begins cycling a bit. It cools very well, so it may be me making a mountian out of a molehill.
I would like to know how to make the engine rpm increase when the compressor engages because with the cam I have, the truck will barely run once the compressor is turning.

Thanks

[Hit Man X]

That's in the tune.

It is normal for the compressor to cycle, this prevents the evap core from freezing up.

[pnhigg]

Thanks