Question about Toyota Pickup

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I changed the coolant on my 94 toyota pickup 4x4 4.0 litter and now it overheats. was running fine before i did this. is there a release valve where i can let the excess air out on it or is it something else that is wrong?

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  • izeahkane Aug 27, 2010

    thank you ive already tried that. ive replaced the thermostat too. after i drive it, it starts to overheat. when i stop the truck the fan will kick on making it cool again.

  • izeahkane Aug 27, 2010

    i did have one hose that was cracked . i replaced that but still. i did put the thermostat in correct, thought it was that too but it only goes in one way. matter of fact i replace the thermostat twice thinking that was the problem. but i check the new one i replaced and it work out fine. got my money back for that one. i also checked the the gauge and the sender they both work fine. driving me nuts!!! was working perfectly fine and now it dont work. thanks though! just thought someone may have ran in to the same problem. but ill run through all the test again just to be sure.... mahalo

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3 Answers

Change the thermostat and then bleed the air out of the system. Unscrew the valve located near the water pump, it is a little silver bolt looking thing attached near the water pump. Open it up and let the air out and then close it after you are finished.

http://www.toyotalexusforum.com/toyota-technical/91422-anyone-have-overheating-problem-95-toyota-pickup-22re-engine.html

Posted on Aug 27, 2010

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Thermostat installed upsidedown perhaps? If not crack a hose clamp loose when the engine is warm to let any air out. Loosen the highest one you see for it will be most effectived this way

Posted on Aug 27, 2010

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Hi,

The problem is because there is air trapped in the cooling system, all you need to do is leave the radiator cap off, then start the truck and let it run until the radiator fan comes on. Then let it run for about another 5mins after that so the air can escape from the cooling system. You can then turn it off and top up the radiator.

This will fix the overheating problem.

Hope this helps, let me know if you need more information.

Thanks

Jason

Posted on Aug 26, 2010

  • Jason Maurirere
    Jason Maurirere Aug 27, 2010

    Ok,
    If you have released the air from the cooling system then it can only be the temperature sender unit to the the temp.gauge in the dash.

    Because your fan is working correctly then it seems you may have a fault with your temp.gauge sender unit instead.

    Remove the sender unit and test it.

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