4kq Heating up...........please help.

[Huw Powell]

I would say if your water pump is leaking all bets are off... fix the
obvious problem before it kills your engine.

at 10-20 dF wih the car moving, the fan shouldn't even come on.  I
suspect you've got (lots of) air in your cooling system.  The gauge runs
off a sender on the top rad hose flange.  The fan runs off a sender in
the bottom of the radiator.

Your water pump may not only be leaking water out (screwing up the
presure, too) but leaking air in.  So you've got water in teh bottom of
the engine, probably not even warm enough to open the t-stat, but air in
the top so the head is not cooled properly and the t-gauge goes nuts.

The expansion tank is hooked up to the radiator and may not really be
indicating the "full" presence of coolant in the engine.

How's your heater working?

Muhammad Sohaib Bukhari wrote:
> 
> Hi,
>     good to see the list up and running. Thanks to the list I was able
> to change the control arm bushings on all four corners on my car. Then
> I put studded winter tires and did the alignement. Now when I drove
> the first day there was no preoblem with the heating. The heating
> gauge went up to 3/4 and then it would come down. So it never went
> over 3/4 mark. Yesterday I was driving to school and the heat gauge
> started to leap up. It never happened this fast before. Then It went
> upto the 3/4 mark and kept going up. Holy Sh^&* was my response. I
> pulled over, let the car cool for a while and then opened the coolant
> reservoir. Everything was fine there. Another note is that I did not
> push on the throttle that much maybe 10% throttle, and still it does
> the same thing, though it takes a while. I temperatures here in Alaska
> are about 15-20 degrees fernheit.
> BTW- at idle my coolant leakes through the waterpump due to bad water
> pump. But it is not very much. I check the coolant reservoir maybe
> twice a day. If the car idles it keeps dripping and if the car is in
> motion it doesn't. Could this be a problem. How do I check if the fan
> is working. At what mark on the temp gauge does the fan usully come on
> 
> Please help.
> 
> Thanks
> Sohaib
> 84 4ksq
> 
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-- 
Huw Powell

http://www.humanspeakers.com

http://www.humanthoughts.org