Overheating

Jase · Post by **Jase** » Sat Oct 22, 2005 2:18 am

My baby has an intermittent(sp) overheating prob. Instead of getting to about half on the temp gauge then the fan coming on and cooling it down it now gets to just over 3/4's then cools down. Is this a job for a auto elec or a radiator place. It's happened twice in the last few weeks. I'm guessing it's just a faulty sender. Thoughts? Cheers.

RedlineGX · Post by **RedlineGX** » Sat Oct 22, 2005 3:14 pm

I would assume its the engine temp sensor. Not the one that sends to the dash but the other one. If the fans arent coming on till it reaches 3/4 then would be electrical I would think since the comp isnt realising its overheating.

Or it could be that the sensor for the dash isnt working properly either and the car isnt actually overheating.

mrx · Post by **mrx** » Sat Oct 22, 2005 7:21 pm

Take it to an auto electrician - they can test the sensors etc first.

I have the opposite problem actually - it may not get up to proper temp, and then will also cool down quite quickly if I drive on a highway or something.

Real pain when you go to overtake, hit about 6k and smack into the safety rev limit. And this after an hour or so driving...

SchumieFan · Post by **SchumieFan** » Sat Oct 22, 2005 8:35 pm

after my prang my bub seemed to wanna cool down early, barely 1/4 of the gauge

devil2004 · Post by **devil2004** » Sun Oct 23, 2005 4:52 am

I would say do a coolant flush and replace it with new coolant. Also try replacing the thermostat as coolant does move rust and other waste around in your radiator and piping causing your thermostat to fail. You should be doing this every 20,000 - 60,000 klms depending on the quality of the coolant. I did it on mine and it cost like $40 ($30 for coolant, $10 for coolant flush) all up. Not sure about the price on the thermostat though as I haven't replaced it yet but it wouldn't cost more than $30.

Hope this helps! good luck.

SchumieFan · Post by **SchumieFan** » Sun Oct 23, 2005 10:38 am

how much goes into the radiator and whats the ratio of antifreeze to coolant/water?

Post by **Bennoz** » Sun Oct 23, 2005 1:03 pm

As a rule of thumb - use a 50/50 ratio of water to coolant.

Pepole think its a 'safe' idea to use more coolant than water - not so.

Water pumps are designed to work with a specific fluid viscosity. Increasing coolant concentration increases fluid viscosity, which makes the pump work harder. Pump life is shortened and fuel economy may be affected as well. Dont use to much

SchumieFan · Post by **SchumieFan** » Sun Oct 23, 2005 5:10 pm

bennoz what would we do wihout u????