I have a 1999 Ford Explorer Limited Edition V6 SOHC and I recently had the chain guides inside the engine
replaced. I know they took the engine out and put it back in but since then, my air conditioning is acting weird. when I'm driving around town, at low speed, everything is all right but when I get on the highway at high speed, as soon as I reach the fourth and fifth speed, the air conditioning either stops working for a second or two, or suddenly stops blowing from the front and blows up in the windshield then back to the front. And, the air that blows is really low. I can have the fan speed set at high, it doesn't matter.
If I release the accelerator, the fan speed comes back to normal!
So, if I go on a long trip on the highway, after a short time the system would freeze because the cold air is just not coming out.
I have to release the accelerator every now and then to prevent the system from freezing and it costs me a lot on gas because of that (and I have to use the a/c as I live in the Caribbean. It's very hot here ... lol).
So, a friend of mine told me it could be a vacuum hose (I don't know if it's the proper word...). Today I went to an air conditioning repair shop and they checked all the vacuum hoses and a little ball-like plastic tank in the front bumper that's connected to one of those hoses. The hose was punctured so they fixed it and the guy told me everything else is OK so it had to be that.
I left the place, everything was fine but when I got on the highway, SAME THING !!!!
So, I'm desperate, I really need my air conditioning the way it was before!!!!
Could it be electrical? Or do you think they haven't checked properly?
What should I do next???
I have a feeling it's a little thing but nobody seems to be able to find it...
Oh and, before I forget, it is a digital controlled a/c. Just in case it matters...