over heating problem help please

[Vick23]

okay well i rebuilt my entire car and then it started to heat up so i changed the coolant bought a new rad and thermostat but still heats up after driving it for a while what do you guys think the problem is

[pickupman6]

Have you bled the cooling system? Does your cooling fans come on? Have you replaced the waterpump?

[Vick23]

yea the fans come on and everything ive bled the cooling system like three freaking times and it still does this so im out of ideas for why it still heats up .

[pickupman6]

What about the water pump. Have u replaced it. Or mabe u got a bad thermostat. Is the upper radiato hose hot? Pull out your tstat and rmove the upper rad hose. Then crank it up and rev it to about 2500 rpms to make sure the waterpump is pumping like it should. Make sure to install the tstat so the spring is on the motor side.

[Vick23]

true that well im going to try that sometime this weeknd to figure out that problem but if all that is replaced and fixed or cleared to go what could possibly be the problem from there..

[pickupman6]

Next time u notice it starting to get warm pull over pop the hood and check your hoses. Give it a little gas and watch to make sure they aren't collapsing. Could be a possible cracked head or blown head gasket, but if you have no loss of coolant that's probably not it.

[POS carb]

did you change the radiator cap?

[stephensimmons]

What thermostates did you install? I have put the 194degree in some hondas and they over heat after driving for a while. Then i put the 180degree in them and they dont over heat anymore.

[Vick23]

yeah i changed the rad cap i pretty much changed everything that can the problem and it still does, and the tstat i used i think its the oem one so im guessing its 194 .. if im right, could a bad belt be the problem ??

[obdriver6]

it could be but do you know if the fans stop after a while? if they do your temp sending unit might be bad. Do you have a DMM so you can check the resistance of the tw sensor when its over heating.

[Dr_Snooz]

Didn't someone here have trouble overheating. Changed everything and it kept doing it. He finally figured out that he had swapped radiator hose ends. Swapped them back and it was good.