Heaters not getting warm.....

As the title says, heaters only get warm when revs held on...

Engine temp gauge holds at normal, no leaks seen....I pressure tested it, it was ok.....pump looks ok...coolant looks like its circirlating....no coolat in oil or oil in coolant......ordered a thermostat and I've fitted a new pressure cap....my only other thoughts are maybe either the matrix is blocked and or the main radiator is blocked too..........has anyone fixed this problem before?

Yes, but it was by filling the radiator and coolant reservoir, which I assume you've done

Yes, but it was by filling the radiator and coolant reseviour, which I assume you've done

Yeah dude........I work at a Toyota dealer........all the hoses are getting hot, so I'm gonna replace the simple bits first!

Well, a silted-up matrix is the obvious potential cause.

I do remember reading a thread on here (http://www.mkivsupra.net/vbb/showthread.php?t=49871) whereby the connecting rod controlling the flap that diverts coolant to the matrix had failed.

Yeah dude........I work at a Toyota dealer........all the hoses are getting hot, so I'm gonna replace the simple bits first!

if the heater matrix hoses are both hot then the part in the following link is worth checking........

http://www.mkivsupra.net/vbb/showthread.php?t=204915&highlight=heater+arm

Thanks guys, I'm just hoping its not my head gasket![sAD][/sAD]

I very much doubt it'll be your head gasket. However, heater matrix replacement is a very involved task.

I very much doubt it'll be your head gasket. However, heater matrix replacement is a very involved task.

that I do not mind dude........still gonna put my new themostat in too.......gonna try flush the fecking matrix later......hope its doesnt start pissing out like a mother monkey arse bummer![ANGRY][/ANGRY]

I very much doubt it'll be your head gasket. However, heater matrix replacement is a very involved task.

It's not that bad when you have done it once or 15 times

Is it worse than doing piston rings on a 2.2 Diesel Avensis...lol, if not.....WOOOOHOOOOOO!

Is it worse than doing piston rings on a 2.2 Diesel Avensis...lol, if not.....WOOOOHOOOOOO!

Lot easier than any engine work.... couple of dash panels, 6 loom disconnects, 2 earth points, steering column and 6 bolts if memory serves me right

......hope its doesnt start pissing out like a mother monkey arse bummer![ANGRY][/ANGRY]

What the hell is a mother monkey arse bummer

Is it worse than doing piston rings on a 2.2 Diesel Avensis...lol, if not.....WOOOOHOOOOOO!

I did it not long ago and it's something like a 10 hour job

What the hell is a mother monkey arse bummer

 

 

 

I did it not long ago and it's something like a 10 hour job

I dont quite know........

Lot easier than any engine work.... couple of dash panels, 6 loom disconnects, 2 earth points, steering column and 6 bolts if memory serves me right

Not scared of a bit of graft..........i really really hope it isn't the headgasket tho!

Does your expansion tank have any coolant in it

Have you tried running the engine with the rad cap off to release any air in the system as their known to suffer from air locks.

Put the heater on full hot and run the engine up to temp with the rad cap off, raise the revs to around 2000 rpm which will help force out any air, drop the revs to tickover top up with coolant and check heater.

Does your expansion tank have any coolant in it

 

Have you tried running the engine with the rad cap off to release any air in the system as their known to suffer from air locks.

 

Put the heater on full hot and run the engine up to temp with the rad cap off, raise the revs to around 2000 rpm which will help force out any air, drop the revs to tickover top up with coolant and check heater.

Gonna have a crack after work..........and refill with H2O till my stat gets here friday......tbh i havent spent a great deal of time trying to bleed the system........I'll let you know tho.....thanks for the advice!

It's not that bad when you have done it once or 15 times

I know where to come for help if/when I do mine. My heater's been luke-warm for ages but I haven't got round to doing anything about it other than reverse/forward flushing the matrix with a garden hose.

Our little Fiesta has a brilliant heater: I changed a coolant hose at the weekend and gave it a run up and down the Roman Road to make sure it had no airlocks. Had to run the car with the heater on full, and it was really roasting, almost painful on my skin!

Just done a sniff test, turned out there wasn't any exhaust gases in the coolant.......drove home and no temperature issues....i bloody hope its the themostat...i've only had her a week!!!!! How bad can airlocks get on the Supra??? Or am i just tring to convince myself its not the headgasket???

Air locks can be a right pain in the arse to get out. I'm be more concerned about this

mother monkey arse bummer which is on the loose.

Notorious pal.. If you got a rad vac kit then use it, thats what i did with mine, makes life that much easier.

Notorious pal.. If you got a rad vac kit then use it, thats what i did with mine, makes life that much easier.

Its really pissing me off.......big time....

You got a rad kit? Can lend mine if you want? Im in tomorrow to pick some bits up anyway.

Mate, that would be awesome.......thankyou!

Alright ill leave it with ian if your not floating about

Thanks mate............