overheating

[jmash]

hi guys, i have just put a new radiator in my d22 and thermostat but i drove 40ks up the highway and it overheated any sugestions thanks

 

[Krankin]

hi guys, i have just put a new radiator in my d22 and thermostat but i drove 40ks up the highway and it overheated any sugestions thanks

did you fill the radiator up to the correct level and did you bleed the air out???


and do us a favour with an intro thread with some details about yourself

 

[Old.Tony]

Welcome to the forum.

There could be several reasons for overheating.

1) Radiator cooling fan clutch not engaging
Get the engine to normal operating temperature then pull over, turn it off and try spinning the fan by hand. It should be a bit stiff - it should not turn over easily. If it does, that's your problem - replace it.

2) Radiator core blocked
If you've used proper coolant for the life of the vehicle then this generally shouldn't happen. It's hard to tell - but try some radiator flush fluid, drain the radiator and refill with coolant.

3) blocked or stuck thermostat
You can try the solution for step 2 first, or just replace it.

4) blocked water channels in the engine block
These require the use of a flushing agent or in the worst case, a strip-down of the engine and you don't really want to do that. If you suspect it, try the radiator flush fluid.

5) blocked or stuffed pump
Again, a radiator flush will assist here and might resolve things but if the pump's shot, there's no point trying to risk a trip with it because that's when it will let you down.

The only other thing I can think of is debris in the radiator fins or too much stuff mounted in front of the grille. I am assuming that you've checked the radiator etc and it's clean (if not, gerni it) and that you haven't blocked the grille with too many large objects.

 

[Krankin]

Welcome to the forum.

There could be several reasons for overheating.



2) Radiator core blocked
If you've used proper coolant for the life of the vehicle then this generally shouldn't happen. It's hard to tell - but try some radiator flush fluid, drain the radiator and refill with coolant.

3) blocked or stuck thermostat
You can try the solution for step 2 first, or just replace it.



The only other thing I can think of is debris in the radiator fins or too much stuff mounted in front of the grille. I am assuming that you've checked the radiator etc and it's clean (if not, gerni it) and that you haven't blocked the grille with too many large objects.

Tony, the blokes just fitted a new radiator and t/stat..

 

[Old.Tony]

Yeah but I was trying to list ALL of the faults. He can do what's left over.

 

[62dub]

Hi I've got the same problem I did use a bit of stop leak a long time ago, the air con cuts out then I know its going to get hot the first time it happened was when I was towing my boat on a hot day up a hill now it get hot 6klms down the freeway when it should have loads of air ? Without he boat, if i keep the heater on it will stay cool! Where is the thermostat on my d22its a zd30 2004, thanks

 

[nathand22]

it could be an air lock as Krankin said, it could also be a cracked head.

 

[Krankin]

or head gasket^

what was it doing before the new Rad and t/stat fittment?


more input please!!! like were you towing a 3 tonne van at the time??

 

[jmash]

or head gasket^

what was it doing before the new Rad and t/stat fittment?


more input please!!! like were you towing a 3 tonne van at the time??[/QUOTE

na mate no towing took it to a different mechanic they done co2 test cracked head or gaskit any idea of a price of a head cheers

 

[Old.Tony]

I don't think the head will be cheap. Best bet is to PM Nizzbits and give him your vehicle's model number (be specific). Hopefully it's just the gasket.

 

[nathand22]

or head gasket^

what was it doing before the new Rad and t/stat fittment?


more input please!!! like were you towing a 3 tonne van at the time??[/QUOTE

na mate no towing took it to a different mechanic they done co2 test cracked head or gaskit any idea of a price of a head cheers

Im not sure how your cash flow is, But when i had sweet f-all i was told about this stuff called "SEAL UP" and it works unbelievably well.

I cracked the head in my D22 zd30 after giving it a drink of water with no snorkel, it got that bad that it would hydraulic lock when i tried to start it.

So i drained all the coolant and flushed the engine and heater core a few times to make sure all the coolant was gone, which is what i was told to do so the "SEAL UP" would work, and what do you know the **** worked so good that i left it for over 150k.
No **** for $10 that stuff fixed the problem and i had no more issues.

Definitely worth a try

 

[Dave]

Probably around $1800 with new valves.