D24TIC - Thermostat must have always been knackered

Laney760 · Oct 30th, 2008, 20:09

Finally found time to get my new thermostat in today. Well, what a revelation! From when I bought the car in July until the she started playing up last month she had always taken at least 4 miles to warm up, sometimes more. Once she started playing up it became 7 miles plus and finally never this last couple of weeks. With the new thermostat in she's warmed up by the time I get to Tescos, lol!

So when I kept reading on the net that these engines take forever to warm up I had no reason to question my four plus miles when I first bought her!! In other words my thermostat must have been knackered from day one I bought her

So, anyone whose D24TIC takes more than a mile or so to fully warm up on the guage (needle exactly midway, pointing to 12 o clock) and you think it's because these engines are renowned for taking a long time, check out your thermostat! (PS Some sources recommend waiting 10 mins after warming up before doing any full throttle work due to oil pressure taking a long time to get up in these cars)

PS Thanks Peter Milnes for pointing me in the direction of my thermostat ref my long warming up time!

craig8661 · Oct 30th, 2008, 20:32

mine used to warm up fairly quick but couldnt tell you what the temp gauge was as it stopped working in the first week i had it it used to work then once in a blue moon.
it is handy as some one may find this post usefull who dont kno the engines.
to add the thermostat on these are so easy to change as long as the bolts dont snap i would say 10 mins at a slow pace then just refill then bleed up

oman5 · Oct 31st, 2008, 20:04

ah, thats interesting- my D24t has always taken ages to warm up, and only ever blows lukewarm from the heater, unusual for a volvo. My temp gauge has never worked either. can you tell me where to find the thermostat?

Laney760 · Oct 31st, 2008, 20:11

Quote:

Originally Posted by oman5

ah, thats interesting- my D24t has always taken ages to warm up, and only ever blows lukewarm from the heater, unusual for a volvo. My temp gauge has never worked either. can you tell me where to find the thermostat?

I got mine from Euro Car Parts online, only a few quid, very fast delivery but they are out of the little gasket that you might need with it. Great site, brilliant prices, just enter your car model details in the top right hand corner and you will see all that they have for your car. Hurry up and do yours cos hard driving on a cold engine is a major cause of short engine life in these cars due to one very long run of oil pipe, lots of info about this all over the net...

http://www.eurocarparts.com/

craig8661 · Nov 3rd, 2008, 23:25

when i got mine it had a rubber gasket on the outside of the thermostate that samwidged between the block and the hose connector of the unit your heater should be roasting other thing it could be is your heater matrix could need flushing out

oman5 · Nov 13th, 2008, 18:55

I've changed the thermostat, still no heater! is there a way to bleed the system? I have tried bleeding it with the plug on the side of the pipe down by the 'stat, but there doesnt seem to be any water reaching the heater itself. any ideas?

craig8661 · Nov 13th, 2008, 21:05

look under the dash follow the hot cold cable down you will see like a tap that stops water going into the matrix look there to start also look in the engine bay to make sure no pipes cut to bypass the matrix

jor · Nov 14th, 2008, 00:22

If you follow the thin hose from the thermostat bacwards you will see it going to the bulkhead. A second hose emerges from the bulkhead immediately below the first and goes into the back of the engine. Drain the coolant by disconnecting the big lower radiator hose from the thermostat after removing the expansion tank cap. Save the coolant if you have recently changed it.
To flush the heater disconnect the first (upper) hose from the thermostat and connect it to a garden hose. Also disconnect the lower hose at the bulkhead and then flush until clear water emerges.
When refilling disconnect the upper hose from the cold start device to avoid air locks (same to bleed the system)
There may be a diagram of the above on k-jet.org. I would have posted the picture from the manual, however guinea pig damage has done for the camera cable.
If no water emerges presumably as Craig says it is time for a change of heater matrix for which procedure a full photo guide has been kindly provided courtesy of Chesh740 - and I hope for your sake it does not prove to be required!

jor

jor · Nov 14th, 2008, 12:38

FWIW here is the relevant manual page.

jor

oman5 · Nov 14th, 2008, 23:13

Yes!!! we have heatage!! flushed the system through with rad flush, refilled and bled it. now it sets fire to your legs 10 mins after starting.

cheers guys!!!

Oct 30th, 2008, 20:09	#1
Laney760 VOC Member Last Online: Mar 18th, 2024 12:17 Join Date: Jul 2008 Location: Henley on Thames	Thermostat must have always been knackered Finally found time to get my new thermostat in today. Well, what a revelation! From when I bought the car in July until the she started playing up last month she had always taken at least 4 miles to warm up, sometimes more. Once she started playing up it became 7 miles plus and finally never this last couple of weeks. With the new thermostat in she's warmed up by the time I get to Tescos, lol! So when I kept reading on the net that these engines take forever to warm up I had no reason to question my four plus miles when I first bought her!! In other words my thermostat must have been knackered from day one I bought her So, anyone whose D24TIC takes more than a mile or so to fully warm up on the guage (needle exactly midway, pointing to 12 o clock) and you think it's because these engines are renowned for taking a long time, check out your thermostat! (PS Some sources recommend waiting 10 mins after warming up before doing any full throttle work due to oil pressure taking a long time to get up in these cars) PS Thanks Peter Milnes for pointing me in the direction of my thermostat ref my long warming up time! __________________ [IMG]Volvo2 by Strider'swoman, on Flickr[/IMG] Current '96 945 2.3 lpt - Aurigas, tailgate spoiler, sports grille, lpg fuelled Previous '88 764 TD, '92 945 TD, '88 745, '81 244 DL

Oct 30th, 2008, 20:32	#2
craig8661 Master Member Last Online: Oct 29th, 2018 11:16 Join Date: Apr 2007 Location: Chesterfield View Photos By: craig8661	mine used to warm up fairly quick but couldnt tell you what the temp gauge was as it stopped working in the first week i had it it used to work then once in a blue moon. it is handy as some one may find this post usefull who dont kno the engines. to add the thermostat on these are so easy to change as long as the bolts dont snap i would say 10 mins at a slow pace then just refill then bleed up __________________ i kno im a dirty beastie sadley no longer rest in peace in volvo heaven NOTICE OF DISCLAIMER any information i give is soley on my own findings and mess ups

Nov 3rd, 2008, 23:25	#5
craig8661 Master Member Last Online: Oct 29th, 2018 11:16 Join Date: Apr 2007 Location: Chesterfield View Photos By: craig8661	when i got mine it had a rubber gasket on the outside of the thermostate that samwidged between the block and the hose connector of the unit your heater should be roasting other thing it could be is your heater matrix could need flushing out __________________ i kno im a dirty beastie sadley no longer rest in peace in volvo heaven NOTICE OF DISCLAIMER any information i give is soley on my own findings and mess ups

Nov 13th, 2008, 21:05	#7
craig8661 Master Member Last Online: Oct 29th, 2018 11:16 Join Date: Apr 2007 Location: Chesterfield View Photos By: craig8661	look under the dash follow the hot cold cable down you will see like a tap that stops water going into the matrix look there to start also look in the engine bay to make sure no pipes cut to bypass the matrix __________________ i kno im a dirty beastie sadley no longer rest in peace in volvo heaven NOTICE OF DISCLAIMER any information i give is soley on my own findings and mess ups

Nov 14th, 2008, 00:22	#8
jor VOC 20573 Last Online: Jul 10th, 2023 22:14 Join Date: Mar 2007 Location: wembley	If you follow the thin hose from the thermostat bacwards you will see it going to the bulkhead. A second hose emerges from the bulkhead immediately below the first and goes into the back of the engine. Drain the coolant by disconnecting the big lower radiator hose from the thermostat after removing the expansion tank cap. Save the coolant if you have recently changed it. To flush the heater disconnect the first (upper) hose from the thermostat and connect it to a garden hose. Also disconnect the lower hose at the bulkhead and then flush until clear water emerges. When refilling disconnect the upper hose from the cold start device to avoid air locks (same to bleed the system) There may be a diagram of the above on k-jet.org. I would have posted the picture from the manual, however guinea pig damage has done for the camera cable. If no water emerges presumably as Craig says it is time for a change of heater matrix for which procedure a full photo guide has been kindly provided courtesy of Chesh740 - and I hope for your sake it does not prove to be required! jor Last edited by jor; Nov 14th, 2008 at 00:32.

Oct 31st, 2008, 20:04	#3
oman5 Senior Member Last Online: Oct 23rd, 2022 03:06 Join Date: Sep 2008 Location: merthyr tydfil	ah, thats interesting- my D24t has always taken ages to warm up, and only ever blows lukewarm from the heater, unusual for a volvo. My temp gauge has never worked either. can you tell me where to find the thermostat?

Nov 13th, 2008, 18:55	#6
oman5 Senior Member Last Online: Oct 23rd, 2022 03:06 Join Date: Sep 2008 Location: merthyr tydfil	I've changed the thermostat, still no heater! is there a way to bleed the system? I have tried bleeding it with the plug on the side of the pipe down by the 'stat, but there doesnt seem to be any water reaching the heater itself. any ideas?

Nov 14th, 2008, 23:13	#10
oman5 Senior Member Last Online: Oct 23rd, 2022 03:06 Join Date: Sep 2008 Location: merthyr tydfil	Yes!!! we have heatage!! flushed the system through with rad flush, refilled and bled it. now it sets fire to your legs 10 mins after starting. cheers guys!!!

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