Passat TDI running cold any ideas

[drjekl]

After you come home and when engine is at operating temperature, slowly remove the expansion bottle cap, run the engine at 2000rpm for 2 minutes and let it off for overnight, so the trapped air can escape, otherwise it will stay there for a very long time if not forever.

You'd have to think in hillbilly and in my case it would have to be air trapped? surely T/stat wouldnt die straight away?

[drjekl]

How do i bleed an air pocket then as the radiator doesnt seem to have a cap on it

I have ordered the DSG thermostat from Lithuania

Whats the part number?

[Umai Naa!!]

They fail even when the cooling system hasn't been touched.

[Guest001]

Whats the part number?

NEW BEHR ( TH 5 75 ) VAG 2.0 TDI Thermostat Part No 1K0121113A | eBay


Khttps://www.ebay.com.au/itm/NEW-BEHR-TH-5-75-VAG-2-0-TDI-Thermostat-Part-No-1K0121113A/273375441247?hash=item3fa672315f%3Ag%3AhW0AAOSw3HZ bC%7ECj&_sacat=0&_nkw=1K0121113A&_from=R40&rt=nc&_ trksid=m570.l1313&LH_TitleDesc=0

Last question is that I guess i will lose most of the coolant when i open the hose so how much do I need to buy to refill it znd then have to burp it again as well Figured on pouring it in with a small gap in the hose then jamming it together when it hits the bottom.

[drjekl]

NEW BEHR ( TH 5 75 ) VAG 2.0 TDI Thermostat Part No 1K0121113A | eBay


Khttps://www.ebay.com.au/itm/NEW-BEHR-TH-5-75-VAG-2-0-TDI-Thermostat-Part-No-1K0121113A/273375441247?hash=item3fa672315f%3Ag%3AhW0AAOSw3HZ bC%7ECj&_sacat=0&_nkw=1K0121113A&_from=R40&rt=nc&_ trksid=m570.l1313&LH_TitleDesc=0

Last question is that I guess i will lose most of the coolant when i open the hose so how much do I need to buy to refill it znd then have to burp it again as well Figured on pouring it in with a small gap in the hose then jamming it together when it hits the bottom.

Thanks much appreciated

[drjekl]

OEM for $50 ish AUD

Coolant Regulator VW AUDI Beetle Convertible CC Eos 1K0121113A | eBay

[Guest001]

OEM for $50 ish AUD

Coolant Regulator VW AUDI Beetle Convertible CC Eos 1K0121113A | eBay

Well mine is $51.99 and comes from a well known seller according to the linked forum Sooner be sure than sorry

[Transporter]

NEW BEHR ( TH 5 75 ) VAG 2.0 TDI Thermostat Part No 1K0121113A | eBay


Khttps://www.ebay.com.au/itm/NEW-BEHR-TH-5-75-VAG-2-0-TDI-Thermostat-Part-No-1K0121113A/273375441247?hash=item3fa672315f%3Ag%3AhW0AAOSw3HZ bC%7ECj&_sacat=0&_nkw=1K0121113A&_from=R40&rt=nc&_ trksid=m570.l1313&LH_TitleDesc=0

Last question is that I guess i will lose most of the coolant when i open the hose so how much do I need to buy to refill it znd then have to burp it again as well Figured on pouring it in with a small gap in the hose then jamming it together when it hits the bottom.

1 x 1.5L bottle of coolant concentrate should be enough. It make 3L of coolant. Though I’d get 2 bottles to have some spare coolant on hand.

[ian]

Can you clamp the hose with a pair of vise grips ,this should stop any coolant from escaping ?

[Guest001]

Can you clamp the hose with a pair of vise grips ,this should stop any coolant from escaping ?

MAybe but they are about 35/50mm diameter

[Umai Naa!!]

Use proper line clamps, if you must.

[Transporter]

Yeah, they’re quite reasonably priced these days. Certainly cheaper than the cooling system hoses.

[Guest001]

Well Im not happy. Today went for a run up to Montville and back and the B+/**$^$y temp gauge sat on 90 everywhere both up and down the hills. Yet last time I tried as said was all over the place. Cant figure it out but reckon it must have been an airlock thats come right. Have it sitting in the garage with the top off the tank to see what happens as it cools down.

Went and ordered the new part and now seems wont need it so if anyone wants one it will be here in a few weeks LOL

[Transporter]

Well Im not happy. Today went for a run up to Montville and back and the B+/**$^$y temp gauge sat on 90 everywhere both up and down the hills. Yet last time I tried as said was all over the place. Cant figure it out but reckon it must have been an airlock thats come right. Have it sitting in the garage with the top off the tank to see what happens as it cools down.

Went and ordered the new part and now seems wont need it so if anyone wants one it will be here in a few weeks LOL

You should be happy, since it was an easy fix.
Bleeding the cooling system properly is important, especially in the closed systems.

[Guest001]

You should be happy, since it was an easy fix.
Bleeding the cooling system properly is important, especially in the closed systems.

Well two reasons im not happy
1 Ive wasted $$50 on something I dont need if no 2 was done properly
2 I spent $1500 for the dealer to do it properly.

Hopefully it has cured it