4KQ - No heat but car runs hot...

[Roa, Greg]

Sounds like the coolant in either your radiator, or your lower hose is frozen.  Have you been topping off your coolant with water?

Happened to me last year.  Had a weeping leak from the heater core for a year or so.  Had been adding a cup or two of water every month or so.  (yeah, I'm an idiot)

First day it got into the negative temps, my lower radiator hose froze solid.  Did exactly the same thing yours did.

I pulled mine in the garage, aimed a heater at the frozen area, and was on my way in a half hour.  (after adding some antifreeze....)

I wouldn't think it is a thermostat problem if the top hose has heat in it.  If the thermostat was stuck closed, I think it would still be cold.

Good Luck!
Greg Roa
Cincinnati, OH
86' 4kcsq
93' 90 CS
83' 944

>From: Bill Phelps <wphelps at rizzo.com>
>To: "'quattro at audifans.com'" <quattro at audifans.com>
>Subject: 4KQ - No heat but car runs hot...
>Date: Thu, 23 Jan 2003 08:35:01 -0500
>
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>Started my 87 4KQ this morning to let it warm up (-5F brrrrr). Got in about
>5 mins later and no heat, temp gauge a bit above half way.. Drove about 1/2
>mile and realized something was not right, turned around and headed for
>home. Pulled in driveway and steam appears from drivers side of hood. Temp
>gauge nearing the top now, but the light did not come on...  Turn off the
>car and open the hood. It would appear that the saftey release in the cap
>had popped and sprayed a bit of coolant out.. Upper radiator hose was
>smokin', lower hose was ice cold....
>
>Thermostat? It was changed this fall when I did the turbo conversion, and
>has worked so far...
>
>My question is what is the coolant flow direction. Does it go from the water
>pump into the lower hose and out the top or the other way around?
>
>I also suspect the radiator which looks pretty scary...
>
>Thanks in advance
>
>Bill.