I have a 91 with 204xxx miles on it. Its been running fin for the year that ive had it up until fri. Weather shot up to 112 (astronomical for MD). I was coming out from the store and I noticed fresh coolant under the car. The upper rad hose had a hole in it. I bought a few bottles of antifreeze and babied it home. when I got home I replaced the tstat, water pump, and hose. Still over heating and the overflow resi goes dry after I let it sit and cool down (dont have the slightest clue where it is leaking from now). The last time I test drove it, it was idling real erratic like. Any suggestions?

 

You sure it was actually full after you replaced everything? As the engine cools coolant will be sucked back in from the reservoir. If you did not have enough it could of ran the tank dry.

 

Check your oil for coolant.Check your plugs for coolant.You are in the danger zone for a blown head gasket and or cracked head.

 

Ok I didnt really see any coolant in the oil but I did notice this weird foam like stuff at the top of the oil. Froth if you will. Ive never seen it an my oil change before. I checked a few plugs and they are dry. I actually cracked one

 

Ya it was at full after I replaced everything but it was kinda at full when I pulled the lower radiator hose. I was surprised at the amount of coolant that came out. Didnt seem like much but then again I was expecting the whole system to drain...

 

Ya that sounds like headgasket territory....

 

I was thinking that. After 15 min of runnin it just overheats, fans on and all. Ima search on how to replace it but if anyone has a link for a DIY or something feel free to post it.

 

They aren't that hard, just make sure you go get the head checked out before you put it back on

 

ok, haynes manual I will invest in. thanks man

 

Do u know how old the radiator and rad fan clutch are?

 

They look like they could be orig but the clutch has pretty good drag on it and I dont see any leaking from the rad.

 

That's where I'd start. Rad can easily be plugged and not leaking. Clutch can be free wheeling too much.