Thread: Sloshing heater core... grrr

Ok its just getting worse!

still got the sloshing noise in the heater box after bleeding it again and again with the car on my steep drive way and a jack under the front (radiator was chin high) still no change

things i have noticed

after a normal or long run i hear hissing from the expansion tank. tank seems fine so i have replaced the lid and this fixed it for a little while but its back again.

temp got high at the car wash the last night(less then a 1k from my house and it was very cold) radiator temp was below 20deg but i did do and big engine wash so i probably earthed the sensor and the engine wasn't very hot to touch and 10 min later it was below 1/2 way

no heat in the cab till i start to drive then when i come back to idle for a few min cold air starts again

pulled the radiator drain plug and the coolant was very air rated.

So i think either the HG is going/gone (errrrrrr) or i have another problem or a blockage of some sort that is stopping water flow and the no heat in the cabin is a dead give away of that.

I have done a sniffer test (blue liquid) 4 time now and still nothing its getting to the point when i out the sniffer in the expansion tank i don't even have to pump it bubbles just raise in to it but the liquid doesn't change colour!!

Everything seems to be pointing to a HG which means the one i replaced 12000K ago must have been faulty or the guys that rebuilt the head f&*ked it up

anyone go any more ideas or tets i can do before i start pulling it apart?

Cheers
Mick

Originally Posted by disco_ute

still got the sloshing noise in the heater box after bleeding it again and again

I have done a sniffer test (blue liquid) 4 time now and still nothing

anyone go any more ideas or tests i can do before i start pulling it apart?

You might remember my comment about my bro ....

Originally Posted by mike 90 RR

Slightly off track ... But .. My bro has a D2 V8 ... He installed a brand new radiator // Genuine Factory replacement ... THE sloshing came back with vengeance after the install ... Long story, short .... The new Radiator was found to be 90% blocked from "flux core" ... from when the factory manufactured the radiator

This was discovered via a mechanic putting a "Temperature sensor gun" over different areas of the radiator ... the readings swung from areas of cold to hot ... instead of a consistent dropping of temp as the coolant flowed through the radiator .... You could talk to a radiator repair shop to do the test

In the mean time ... Disconnect the heater hoses from the heater box ... Loop / join them together to complete the circuit ... see if that settles it down

Also ... Check the hoses going to the throttle body for leaking ... especially the 2 little ones going to a thin plated body .... Take the little hoses off and make sure they are running OK (coolant) through the throttle body


Other than all the above ... The hissing from the expansion cap don't sound good tho

Mike

Infact ... If you have done the sniffer test (blue liquid) 4 time now and still get nothing ...


first port of call .... Disconnect the heater hoses from the heater box .... Cheap & simple to do .... and less things to blame

Mike

Originally Posted by mike 90 RR

You might remember my comment about my bro ....



This was discovered via a mechanic putting a "Temperature sensor gun" over different areas of the radiator ... the readings swung from areas of cold to hot ... instead of a consistent dropping of temp as the coolant flowed through the radiator .... You could talk to a radiator repair shop to do the test

In the mean time ... Disconnect the heater hoses from the heater box ... Loop / join them together to complete the circuit ... see if that settles it down

Also ... Check the hoses going to the throttle body for leaking ... especially the 2 little ones going to a thin plated body .... Take the little hoses off and make sure they are running OK (coolant) through the throttle body


Other than all the above ... The hissing from the expansion cap don't sound good tho

Mike

its 300tdi so the cooling system so it doesn't have throttle body but the cooling system is pretty simple but i did recently get a new radiator

Originally Posted by disco_ute

its 300tdi so the cooling system so it doesn't have throttle body but the cooling system is pretty simple but i did recently get a new radiator

..... I forgot that your diesel ....

you sure the sloshing is from that......might be a silly suggestion but have you taken the rubber bungs out of the bottom of your doors? I had sloshing for a long time and I was carrying about 5 litres of water in each door with out realising it.

of course this wouldn't be linked to you getting hot and cold air...that could be a coincidental issue. might be worth a look

Originally Posted by dullbird

you sure the sloshing is from that......might be a silly suggestion but have you taken the rubber bungs out of the bottom of your doors? I had sloshing for a long time and I was carrying about 5 litres of water in each door with out realising it.

of course this wouldn't be linked to you getting hot and cold air...that could be a coincidental issue. might be worth a look

I am 100% that is is from the hear/cooler unit
doors dont hold water as i found out on the weekend when they filled up with muddy water

Originally Posted by disco_ute

Ok its just getting worse!

still got the sloshing noise in the heater box after bleeding it again and again with the car on my steep drive way and a jack under the front (radiator was chin high) still no change

things i have noticed

after a normal or long run i hear hissing from the expansion tank. tank seems fine so i have replaced the lid and this fixed it for a little while but its back again.

temp got high at the car wash the last night(less then a 1k from my house and it was very cold) radiator temp was below 20deg but i did do and big engine wash so i probably earthed the sensor and the engine wasn't very hot to touch and 10 min later it was below 1/2 way

no heat in the cab till i start to drive then when i come back to idle for a few min cold air starts again

pulled the radiator drain plug and the coolant was very air rated.

So i think either the HG is going/gone (errrrrrr) or i have another problem or a blockage of some sort that is stopping water flow and the no heat in the cabin is a dead give away of that.

I have done a sniffer test (blue liquid) 4 time now and still nothing its getting to the point when i out the sniffer in the expansion tank i don't even have to pump it bubbles just raise in to it but the liquid doesn't change colour!!

Everything seems to be pointing to a HG which means the one i replaced 12000K ago must have been faulty or the guys that rebuilt the head f&*ked it up

anyone go any more ideas or tets i can do before i start pulling it apart?

Cheers
Mick

hi everyone,
i have a 1996 disco v8 petrol with a 186,000k's on the clock
I have just read this post and found this could be the cause the of my problems.
1 On startup my heater core seems to "slosh"
2 the heater does'nt seem to heat up as quick as my other old disco
3 i have had my radiator reservior split recently.
4 it seemed to overheat when i climb up a big hill near where i live in the summer. but did it again tonight even though it was cold
5 today it has just started to use oil and is fuming badly out the exhaust, lost power and has a clicking sound coming from the engine. also appears to be running on 7 1/2 cylinders.
It now appears that i may have a blown head gasket. thanks