Car slowly overheating, even know everything seems to be working ?

[RAWDEAL 222]

I have a windsor in my XB .. and up until a while ago everything was fine with the cooling. 

I am not sure why but slowly the temp rises all the way up to about 95/100 (at that point i turn the car off) 
even when its a cold night and i am doing a steady 100kmph (which used to hold 80-85 even with no fans on)

 

The only possibility's i can think of is 

 

A: somehow the thermostat isn't opening 

 

B: The new water pump isn't circulating properly.

---EDIT--- 

 

C: Maybe ignition timing or Gas Mixtures?  

 

 

car is running an Au rad / Fans and a thermo fan controller

the thermostat is a cold one.. as the car is straight gas. Thermostat is i think an 75 degree?

I just put a new water pump in it less that 1000ks ago

I can set the fans to come on anywhere between 20 and 100 degrees

[FORD_MAN 1,026]

start with a new Radiator cap, go from there

[slydog 7,873]

Could be water going past in radiator to fast. I used a real big pully on my clevo and it never got hot after that.Plus the thermostat seems low,id suggest going to a 85-87 unit and checking it work but plonking it in freshly boiled water. If it works it will open.

[RAWDEAL 222]

start with a new Radiator cap, go from there

it doesn't  use water though? 

[SPArKy_Dave 8,871]

Dodgy ignition module or hall effect sensor throwing the timing out, and/or a faulty IAT sensor causing the same.

 

EFI Windsors are bad for it.

(assuming of course it's an EFI Windsor)

 

In my experience, they'll get up to 110degrees, but won't actually overheat.

Just run very hot.

[bagged351 9]

Could possibly be a blocked radiator? When it is hot and the fans are running if you put your hands ( carefully ) in front

of them and one side is blowing hot and one side cold means there is a blockage.

 

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[slydog 7,873]

The fact it creeps slowly and stays there @ hy speed shows theres air going past but yet temp rises. If the thermstat has a by pass in it or if it's even working can be a issue. Seems very cold for a stocker and car run @ the most efficient closer to water boiling point.

 

Id change to a hotter thermostat and confirm it actually works and check water flow.Like said maybe the rad is partially blocked and or the thermostat is the issue.

 

Next question is the gauge imperial or metric ?  

[RAWDEAL 222]

Dodgy ignition module or hall effect sensor throwing the timing out, and/or a faulty IAT sensor causing the same.

 

EFI Windsors are bad for it.

(assuming of course it's an EFI Windsor)

 

In my experience, they'll get up to 110degrees, but won't actually overheat.

Just run very hot.

I pretty much just want it to run at about 85ish degrees , its lpg only it should run fine , that way if something goes wrong im not already at 96 degrees or whatever they normally run at

 

Where do i buy the Ign Module ? Car is setup with a Impco 425 and an MSD box on the original dizzy, no other efi hardware at all

 

 

The fact it creeps slowly and stays there @ hy speed shows theres air going past but yet temp rises. If the thermstat has a by pass in it or if it's even working can be a issue. Seems very cold for a stocker and car run @ the most efficient closer to water boiling point.

 

Id change to a hotter thermostat and confirm it actually works and check water flow.Like said maybe the rad is partially blocked and or the thermostat is the issue.

 

Next question is the gauge imperial or metric ?  

Its a metric guage lol

Rad is pretty much brand new, and its an even level of heat throughout

 

ill buy a new thermostat at supercheap today.. ill also source some of that spring that they use in the lower hose because it sucks in a little bit (but wasnt enough for me to worry about it untill now)

 

 

 

I should add ! this cooling setup (fans / rad / ect) used to cool my grout filled clevo , until it needed to be pulled apart so i swapped in the windsor

[slydog 7,873]

Yes replace the hose with a AC one. Even my xflow has a spring in it.

[bear351c 10,270]

Coolant/water boils at a higher temp under pressure, Radiator cap has a relief spring, a seal, allows pressure to vent... cheap too.!!

 

Bottom hose collapsing

 

Timing issue

 

Anything in the Windsor block, that may have come loose.  EG:  dirt, sand, mud that is now in the rad.?

 

Heat issues are always a PITA,  let us know how ya get on.

[RAWDEAL 222]

Coolant/water boils at a higher temp under pressure, Radiator cap has a relief spring, a seal, allows pressure to vent... cheap too.!!

 

Bottom hose collapsing

 

Timing issue

 

Anything in the Windsor block, that may have come loose.  EG:  dirt, sand, mud that is now in the rad.?

 

Heat issues are always a PITA,  let us know how ya get on.

at the moment it runs a near brand new Tridon cap

 

the one where you can pull it up to relieve the pressure (great fuckin idea if you need to top it up when its hot!)

 

Totally forgot to get the damn cap today! To hot outside its messing with my body , im not used to it! 

 

Ill swing past supercheap tmoz and grab one. I assume 16psi is fine ?

[bear351c 10,270]

You got a recovery bottle.?  2 kinds of cap.  One allows coolant to vent through the overflow hose and onto the street, the other has the ability to allow the coolant back into the rad. (recovery type). Make sure they know which one you want. 16 psi should do it.

 

Got any other temp gauges you could fit up.? Yours might be reading incorrectly. Try turning your fans on 10* colder.

[RAWDEAL 222]

You got a recovery bottle.?  2 kinds of cap.  One allows coolant to vent through the overflow hose and onto the street, the other has the ability to allow the coolant back into the rad. (recovery type). Make sure they know which one you want. 16 psi should do it.

 

Got any other temp gauges you could fit up.? Yours might be reading incorrectly. Try turning your fans on 10* colder.

 

I dont have another guage at the moment , but ill try to get another one if the thermostat doesnt work

 

its a non recovery type, just spits out on the ground if it overheats

 

Its an aftermarket BA/BF header tank that i had the mounts rewelded to suit my application

[RAWDEAL 222]

UPDATE

got the thermostat out

 

before i out the new one in.. what direction should the face? im pretty sure its spring side faces radiator of that makes sense?

 

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[Mr Polson 10,214]

It should say to rad on one face. Most do.

[RAWDEAL 222]

It should say to rad on one face. Most do.

it diddnt say anything on it ,,,,   .BUT

 

a quick google of 'which direction to face thermostat'

 

gave me several youtubes of 302w thermostat installs

 

i think i had it the wrong way

 

the spring must face INTO the intake .

 

ive fixed it with the old tstat. hopefully it fixes it. although i cant remember 100% what direction it was in before hand as i took the housing off and it fell lol

[deankxf 20,287]

it diddnt say anything on it ,,,,   .BUT

 

a quick google of 'which direction to face thermostat'

 

gave me several youtubes of 302w thermostat installs

 

i think i had it the wrong way

 

the spring must face INTO the intake .

 

ive fixed it with the old tstat. hopefully it fixes it. although i cant remember 100% what direction it was in before hand as i took the housing off and it fell lol

i beleive the spring side is the intake side(engine side) so that it gest the heat into the plunger part which causes it to open.

 

they should make it that it cant go in backwards.. that would be a good idea.

 

[bear351c 10,270]

Yup,....this   ^ ^ ^

[RAWDEAL 222]

i beleive the spring side is the intake side(engine side) so that it gest the heat into the plunger part which causes it to open.

 

they should make it that it cant go in backwards.. that would be a good idea.

 

Yeah i changed the Tstat around. Still the same issue. 

 

I am going to put a spring thing in the bottom hose... and try that . otherwise i am not sure wtf is going on ! 

[Stu5766 394]

You need a spring in the bottom hose to stop the water pump sucking the hose in.

If you are running hot even at freeway driving, it sounds like a flow problem. Are the top & bottom hoses an even temp?? Are the tanks on the radiator even temp??

The other question is, are the fans wired up correctly??

If the fans are wired backwards, you might be pushing the heat back into the radiator, instead of drawing it out. With wind flowing in at 100km/h & fans trying to push it back out from the other side, the heat will be trapped & just keep getting hotter.

Simple test, when the fans come on, does hot air pump out towards the engine, or out through the front of the grill??

[Stu5766 394]

Just reading back, you have a BA header tank?

Does your radiator have a cap or is it completely sealed??

I've seen people get the radiator fill cap mixed up with the header tank recovery style cap & lead to all sorts of issues.

[RAWDEAL 222]

You need a spring in the bottom hose to stop the water pump sucking the hose in.

If you are running hot even at freeway driving, it sounds like a flow problem. Are the top & bottom hoses an even temp?? Are the tanks on the radiator even temp??

The other question is, are the fans wired up correctly??

If the fans are wired backwards, you might be pushing the heat back into the radiator, instead of drawing it out. With wind flowing in at 100km/h & fans trying to push it back out from the other side, the heat will be trapped & just keep getting hotter.

Simple test, when the fans come on, does hot air pump out towards the engine, or out through the front of the grill??

fans are good 

spring will be done tomorrow

the top and bottom hose are how but the radiator is also hot

EDIT: i was also thinking if that doesnt work . to cut the center from the thermostat, and that will tell me if the fucker isnt opening properly

[ricktewagon 39]

I saw vids on youtube where they drop one in a pot on the stove to confirm its no good.

[Thom 6,650]

I saw vids on youtube where they drop one in a pot on the stove to confirm its no good.

 

You should always test them before you fit them, just went through a batch of 10 new ones before I found one that worked at the correct temperature

[Stu5766 394]

What type of fan sensor are you running???

Are they multi speed or single speed.

I knew a guy who changed his whole engine due to over heating, only to find it was the high speed fan relay not working.

Fans were only operating at low speed & couldn't keep the thing cool.

That was in an XH ute.