93 villager problems

[Jeanette656]

Yesterday I bought a 93 villager, today it appears that was a mistake! The van will not blow heat at all. I changed the thermostat today and now not only is there still no heat, it began overheating, and the fan belt started squeeling. Also while driving, once in a while the engine seems to loose its power, almost like its not getting fuel, but if i take my foot off the gas it idles fine.This only happens for about half a minute then its fine. Are these problems related? I was thinking the heater core may be plugged...but would that cause the engine to miss? If anyone can give me any advice on what to do I would greatly appreciate it.

[dzus]

No heat/over heating; blocked heater core or air in coolant system.
Loss of power;may want to try a new fuel filter.
Problems not related.

[Jeanette656]

It turns out the van was air locked.....as far as the bad miss goes ive changed the plugs, wires, fuel filter and distrubitor cap and it still has the miss. I thought id try the o2 sensor next, can someone tell me where to find it?

[IH8SPM]

How many miles are on it? Explain the mis. What type of fuel are you using and the overall condition of the van.

[fix my car]

I may be able to help with your engine problem. I had the same problem. Check all your vacuum lines. I found bad line connected to my vans EGR valve. Replaced and fixed the problem!