4kq overheating - still

[ben swann]

Yes, I have been perplexed as to what exactly is going on.

I installed a new thermostat - didn't help.  Running without one helped
a little.

I have not observed a restriction anywhere.

I will check the upper coolant neck for some kind of restriction, and
also the rear of the block where the heater returns. If they are good
then the only thing I can figure is there is some kind of blockage from
the head to the block - Perhaps an improper head gasket was installed.

Fan doesn't kick on because the bottom of the rad feels ice cold to the
touch even when the top of the radiator is too hot to handle.  I
installed a switch to force the fan on which let me run the car a
little longer when the weather was cool.

The car has pretty much been doing this since I got it.

Ben
----- Original Message -----
From: CTDiesel at aol.com
Date: Friday, May 30, 2003 11:26 am
Subject: Re: 4kq overheating - still

> how new is the thermostat and what kind is it.  I put in a
> thermostat from > Napa and 2 months later it failed.
> I cant image what it is if the fluid is circulating the system and
> coming out > the top of the engine and bottom of the radiator than
the only > other > restriction is at the thermostat.   I see you said
maybe a clog > somewhere but i doubt > that.  The fan running right?
There is 2 different temps of > thermoswitches > 102/95 and 93/85  you
can try the cooler one maybe.
>
> HTH
> DJ
>