This is taking the p*** now!

[magnum force]

well im going to give that a big "hmmmnn"


Perhaps there was some damage when the truck first overheated.
Im afraid with my limited knowledge i cant help much mate. I can just assume something has bit the dust. Lets hope if it is a problem it wont take your wallet down with you!!!

HeHe roger that mate. Thats why im wondering about the pump, if it spins ok when "normal " driving, then when ya get up the top end of the revs it spins on its shaft and cant catch up then wouldnt the temp go up?

[surfenstein]

HeHe roger that mate. Thats why im wondering about the pump, if it spins ok when "normal " driving, then when ya get up the top end of the revs it spins on its shaft and cant catch up then wouldnt the temp go up?

take the stat out and give it a go.

[magnum force]

take the stat out and give it a go.

Ill try it at the weekend Mark but the stat is new and i tested it b4 i fitted it. If that sorts it what will that mean?

[surfenstein]

Ill try it at the weekend Mark but the stat is new and i tested it b4 i fitted it. If that sorts it what will that mean?

it means you need a new stat.

[magnum force]

it means you need a new stat.

Oh! right....DOH!!..... said it was doin mi head in.

[Vagrant No2]

Do not run without a stat , it can make it overheat worse . It can cause the waterpump to cavitate and not circulate the water properly .
We used to remove the centere part of the thermostat for rallying , but leave the outer frame of stat to give a bit of back pressure to the pump .

[surfenstein]

HeHe roger that mate. Thats why im wondering about the pump, if it spins ok when "normal " driving, then when ya get up the top end of the revs it spins on its shaft and cant catch up then wouldnt the temp go up?

i have come across water pumps where the impeller is loose on the shaft.and as the engine speeds up the impeller just spins on the shaft and that gave the same symptoms im not saying this is the case but it is a possiblity.

[magnum force]

Do not run without a stat , it can make it overheat worse . It can cause the waterpump to cavitate and not circulate the water properly .
We used to remove the centere part of the thermostat for rallying , but leave the outer frame of stat to give a bit of back pressure to the pump .

Thanks for that Rick......me thinks i might give up and put the cozi lump in i have, will it work?

[surfenstein]

Do not run without a stat , it can make it overheat worse . It can cause the waterpump to cavitate and not circulate the water properly .
We used to remove the centere part of the thermostat for rallying , but leave the outer frame of stat to give a bit of back pressure to the pump .

i dont think it will do any harm just to test it will it rick????

[magnum force]

i have come across water pumps where the impeller is loose on the shaft.and as the engine speeds up the impeller just spins on the shaft and that gave the same symptoms im not saying this is the case but it is a possiblity.

YES!!! thats what i have been thinking, ta bud.

[plumb bob]

Don't rely on the toyota temp gauge, they are pathalogical liers, and as acurate as a polish builder.

Get an aftermarket temp guage fitted and find out what you "actual" running temps are.

[magnum force]

polish builder. Like that Bob lol...ill get one mate and see how it goes, thanks ..
And thanks for all your input guys,most appreciated

[BUSHWHACKER]

Maybe it's your huge spotlights in front of the grille that are restricting airflow at speed, kinda deflecting it away instead of through the rad?

[joker??]

got the same prob on my truck fine about 70mph but push it up to about 85
and temp goes up , got new rad cap , thermostat, new atf ,come to the conclusion its rad that may need changing [i hope]


ps did read before about that bit of foam between rad and grill needs to be there to stop the air just flowing over rad instead of through it

[plumb bob]

got the same prob on my truck fine about 70mph but push it up to about 85
and temp goes up , got new rad cap , thermostat, new atf ,come to the conclusion its rad that may need changing [i hope]


ps did read before about that bit of foam between rad and grill needs to be there to stop the air just flowing over rad instead of through it

Mine won't even get to 70mph since I had the head replaced.