Tried to recharge the A/C system. Truck was running fine, as soon as the 134a refrigerant got into the system the compressor started cycling on and off without hitting the switch and the engine started to overheat. The engine would also start to rev up and down. Any help would be greatly apperciated.
A/C not working on 1997 Ford Expedition
by SKeyek in Millville, NJ on May 31, 2010
1 answer 1 comment
ANSWER by QuattroMan on May 31, 2010
If the a/c system pressure is too high it will cause overheating and the high pressure valve will release refrigerant from the system, which may be what is happening here. Check the fan operation, if it's OK then you'll need to put some gauges on it to see what is going on in the A/C system.
COMMENT by SKeyek on May 31, 2010
Thanks for the info. But it turns out the overheating problem is the same issue I have been trouble shooting for a few weeks now and had nothing to do the A/C, charged the A/C up and it is running fine. It is looking like I will need to replace the Radiator. have replaced just about everything else.
Had half a belt width to drive home. When a/c was on, I noticed sparks coming from the a/c, but clutch was not frozen. Can I unplug the a/c and still have heat for this winter?
Flushed Twice, New coolant, New pump, New thermostat 192', New Fan cluch, overheats when A/C is turned on the Highway but not in City traffic What can be the cause of this
My A/C works fine when idling or going down hill. But once I accelerate, the pressure stops, it still cools just fine but there is no air blowing out. The back A/C works fine during this. I've h...