Overheating?

[kk2002s]

As far as Truck leak, you looked under the Foam pads under the Carpet?
When my tank went, carpet was dry. The coolant that got to the trunk floor, under the foam pads, found any hole and dripped out.
Have you taken the plastic cover off the Expansion tank. This exposes the Purge valve. There is a drain hole between the purge valve and Fill. This hole connects to the overflow tube that drains down just in front of right rear tire.
Look for signs of dried or leaking coolant. The purge values can go bad as well. Though these typically lead more to condensation on the trunk lid, not a gallon + loss.
Take out carpet and foam pads, expansion tank cover plate refill you system with distilled water and get car up to temp to see what's going on

[Snipershot]

Originally Posted by kk2002s

As far as Truck leak, you looked under the Foam pads under the Carpet?
When my tank went, carpet was dry. The coolant that got to the trunk floor, under the foam pads, found any hole and dripped out.
Have you taken the plastic cover off the Expansion tank. This exposes the Purge valve. There is a drain hole between the purge valve and Fill. This hole connects to the overflow tube that drains down just in front of right rear tire.
Look for signs of dried or leaking coolant. The purge values can go bad as well. Though these typically lead more to condensation on the trunk lid, not a gallon + loss.
Take out carpet and foam pads, expansion tank cover plate refill you system with distilled water and get car up to temp to see what's going on

I took out the carpet and foam pads last night and there isnt any sign of leak, or residue. I didnt take the tank cover off, since i didnt see coolant under the foam, but thats a good idea, ill do that tonight if this new cap doesnt work. Thanks!

Joe

[Lew]

Originally Posted by kk2002s

As far as Truck leak, you looked under the Foam pads under the Carpet?
When my tank went, carpet was dry. The coolant that got to the trunk floor, under the foam pads, found any hole and dripped out.
Have you taken the plastic cover off the Expansion tank. This exposes the Purge valve. There is a drain hole between the purge valve and Fill. This hole connects to the overflow tube that drains down just in front of right rear tire.
Look for signs of dried or leaking coolant. The purge values can go bad as well. Though these typically lead more to condensation on the trunk lid, not a gallon + loss.
Take out carpet and foam pads, expansion tank cover plate refill you system with distilled water and get car up to temp to see what's going on

You mentioned the purge valves can go bad. Saying the valves typically lead more to condensation on the trunk lid. That's what I experienced today. Condensation on my deck lid. When you say "can go bad", are you referring to maybe the seals are bad in the valve?

[san rensho]

All right, first things first. First fill the coolant system with distilled water. Then start the car and get it up to temperature, and try to purge the system of air as well as you can, just using the manual method.

Now, check for leaks, check in the water pump area and in the coolant cap area. If it holds pressure and there are no leaks, start looking at the radiator fans. It's a pretty complicated system that has two speeds, and it's very common for a resistor to blow out which can cause overheating. If you find fault with the radiator fans, then that's probably all that your problem was, it just overheated once.

[san rensho]

Okay, disregard last post. That's what I get for writing before reading all of the thread.

[jvmbc4]

So I replaced the coolant cap with the new one I received today and the light still blinks from the moment I start the engine. I guess I will try to find a thermo sensor for the engine compartment. Has anyone ever had to replace one of these. I have not been able to find one when I search for parts.

1) The coolant was low three times after refilling it, so I plan on getting a new coolant cap.
2) The drivers side cooling fan works on both low and high speed, while the an on the passenger side is only working at high speed. I checked the relays and they are all good. Do I need to change out this fan?
3) The engine compartment fan is working, I jumped the relay. Can the thermo sensor go bad?
4) Water pump and thermostat have 20,000 miles in 9 years. should I change them out?