[jasgiroux]

Hi Guys, just completed a radiator flush.

I filled the coolant, started up the engine and noticed only cold air was coming out from the vents. Noticed that the temperature gauge was half way (like usual).

Connected my OBDII reader and the engine is running at 206 F .... Weird that my needle is half way (usually ~180 F)...

So read up and it's apparently air in the cooling system and the engine needs to overheat to get rid of the air bubbles ... But how high should I let it go ?!?

I can't seem to rely on the dash reader, since it doesn't seem to be in sync with my OBDII reader.

Help !

 

[Tonka Cruiser]

after you filled it did you run the car for a few minutes with the cap off?

 

[jasgiroux]

That's what it's doing now ... Lifted on wheel ramps with cap off and heather on

But I got worried when I saw 206F ... how high should I let it go ?

 

[Tonka Cruiser]

get it off the ramps, has to be level.

 

[jasgiroux]

Things are working for me ... reached 242 F and still not getting warm air.

The gauge did go up but not all the way to the red zone, I stopped the engine and will let cool down and start over once it's cold

 

[jasgiroux]

I meant to say NOT WORKING FOR ME ...

I'll try off the ramps ....

 

[jasgiroux]

Still not working, it's frustrating ...

 

[FJ&TJ_Dude]

Off the ramps will be the key if not maybe thermostat??

 

[Tonka Cruiser]

is the radiator hot

 

[hearseman]

alot of the newer engines have bleeder screws in them like a brake caliper. Not sure about these though

 

[jasgiroux]

Still overheating ... It seems to be the brand new thermostat that's not working at all ...

The radiator did started to heat up, I had to put the cap back on because it was spilling out ... I tought I was finally going to get my heat but no ... still no heat and engine overheating.

I'll have to keep working on it tomorrow, this sucks !

BTW: The original thermostat was working (somewhat) but I was changing it due to really bad fuel consumption. I'll will try the old thermostat tomorrow and see

 

[FJ&TJ_Dude]

:cheersude Ive been following this all day and you need a beer!!!


Good luck:cheers: I think we all agree, beer thirty. Keep us updated

 

[Layonnn]

You don't need to let the engine over heat to allow air bubbles out. You run the engine with the radiator cap off to get rid of air bubbles.

What fluid did you fill it back up with? Did you use Toyota Red coolant and distilled water?

Even on a hot day, my temps never got above 196* (and that is when it was 110* outside)

 

[sephcm]

Air in the system.:cheers:

 

[Mutt9757]

I would make sure the heater temp. switch is fully open while running, if not some air will get traped.

 

[Tonka Cruiser]

if your rad is not getting hot it is your most likely thermostat

 

[eurovic]

You have air trapped in the system.

Did you drain the engine block with the flush or just the radiator?

There should be a bleeder screw on top of the motor usually by the thermostat housing.

 

[bandi]

Another one for AIr in the System....

 

[ducky]

yep sounds like you need to burp the engine.

Engine Running Hot? Burp It! | MILEPOSTS Garage (Tech Tips)

 

[jasgiroux]

Things are different this morning ... The reservoir was empty, I filled it up, took off the rad cap, started the engine, it took at least 10 minutes to warm up to 186 F

Now:
- it's stable at 186 F (used to be 181 F with previous thermostat)
- Left engine run for another 15 mins, then put radiator cap back on (no bubbling this time)
- The top left rad hose is hot
- The bottom right rad hose is a little warm

But I get no hot air in the vehicle ....