Excellent!

I'm glad that you found the culprit.

I had one of my speed distance sensors do the same thing before. It appeared to look fine while in the car (at least the wires) but as soon as it was removed I could see where the wires had become brittle and broken. I guess the heat really does a number on those wires over the years.

 

Oh! Wait a minute...
There is another problem.

I took the car out for an hour drive. Since it was rather cold I did not notice the engine overheating.
It became obvoius only when I stopped at long trafic lights.
The temp. guage jumped high in 30 seconds..
The fan came on and I knew that something was wrong.

Checked codes:

Code: 33 Air conditioning clutch relay circuit open or shorted (may be in the wide-open-throttle cutoff circuit)

Wonder it this could cause overheating?

I changed the thermostat last week, new radiator.

The car sat unused for 5 years.

Befored I decided to bring it back to life, most stuff was stuck.

I now wonder if this is the coolant pump.

I hate to dig into it and replace it without being sure that this is the problem.

So, here is my question:

How would I go about making sure that the pump needs to be replaced, or,
is it possible that this might be some electronics playing games with me
(the code 33 above, could it affect things somehow) ?

Thanks agian,

Mat

 

Did the temp. drop after the fan came on, or did it stay high? Where exactly was the guage reading.

As far as the water pump goes, usually when they go bad they will leak fom the bottom because anti-freeze is getting past the seals. If yours is not leaking you can probably assume it's fine. Did this just start happening all of a sudden, or just since you had the motor apart?

 

Yep, thats why water pumps are designed with a weep hole at the lower front, when the pumps bad it will leak from there.

 

I drove it today.
When the fan comes on the temp. drops to normal, that is, what seems to be normal for this car: kind of high.
The fan comes on when the guage is 3/4 up.
The normal seems to be at 1/4 from the bottom.
Parhaps all that sounds OK, but, when you pop the hood, things seem very, very hot;
I can almost smell burning metal, and cannot touch anything.
I had a feeling I was peeking into a furnace.

I checked the thermnostat (its OK).
I touched the houses going in- anf from- the rad. Both hot.

I disconnected the top one (on cold engine), started up and waited.
At first the thermostat was closed (no flow),as the motor warmed up, the Prestone
started to flow...

All seems fine, but HOT, VERY HOT.

I'll drive it for a few days and observe.

Do you think its safe???

Thanks

Mat

 

I would replace the thermostat with a 180-deg. unit. I run 180's in all of my 2.2's. Don't forget to drill a 1/16" hole in it before you install it. The fan should come on when the gauge reads about 1/2.

It also sounds to me like it may be time to replace the radiator. My GLH ran a little hotter than I like when I first got it. I replaced the thermostat with a 180 and it still ran hot. I then decided to replace the radiator and it has been fine ever since. The gauge reads about 1/4 while driving and never get above 1/2 while in traffic in the summer time. I don't even think that the fan comes on in the winter because the gauge never gets above 1/4.

 

The Radiatir is brand new. Replaced it in February.
I hope its not a bad one.

Drill 1/16" hole in the thermostat? Can you elaborate a bit? (like: where, right through it?)

I actually thought of removing the thermostat (a temporary measure), just to see how much
it is actually slowing the flow.

I did not know they are graded. I will try to get one that is 180-deg.

Thanks. I'll let you know what the outcome is.

Mat

 

The hole is drilled through the flange just outside of the valve, but inside of where the gasket goes.

Removing the thermostat completely is only good as an emergency fix. It is fairly safe to do during the winter, but not during the warmer months. Without the thermostat there, the coolant is not given time enough in the radiator to remove the heat from the coolant and will cause overheating. This is why the thermostat is there in the first place.

All thermostats are set to open at different set temperatures, 180 deg. is a good all around thermostat to use.

 

Thanks guys.

Yes, the new (recently installed) thermostat was 192-deg.
I replaced it with 180-deg, drilled the hole and...all is fine.

In case you didn't know, you guys have saved me a lot of trouble
and wasted time.

For that -

A BIG THANK YOU !!!
[sm=smiley20.gif]

 

HEY GUYS NEW HERE .... JUST LOOKING AROUND AND I LOV THIS PLACE AND I HAVE ALOT OF STUFF TO ASK ... WELL RITE IM GOING TO BED BUT ..... JUST ONE THING TO SAY ....... OMNIS KICK ***