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  #21  
Old 09-19-2009, 01:46 PM
lalozf lalozf is offline
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did you checked the thermostat in the air filter, there is a tap that selects from hot/cold air.
The other day mine began to raise temperature and found that I was getting hot air, I fixed it and now temperature is ok, I leave you a link to some pictures,
http://www.volvo4life.es/foro/index.php?topic=19375.0
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  #22  
Old 09-19-2009, 05:57 PM
v8volvo v8volvo is offline
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All D24T Volvos should be modified in this way. It's not good for the engine to have a "hot air intake". On all of mine, I remove the metal flex tube from the header to the airbox and remove the little plate on the header that it connects to (just so that it's not sitting there looking like something is supposed to attach to it). Then I open up the airbox and use a small screw to permanently fix the air diverter door in the bottom of the airbox assy in the "cold" position (I screw it shut on the hot side). On virtually any older Volvo, this system is almost guaranteed to be broken and it always fails in the hot position. This makes for worse performance, more wear and more heat in the engine, which is not what you need if you are trying to diagnose an overheating issue.

Everyone who hasn't checked this on their car should do it! A very easy and important modification...
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  #23  
Old 10-06-2009, 10:23 AM
lalozf lalozf is offline
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do you have any news?
I have now the same problem, today I run the car 10 miles and touched the hoses of coolant, only one was hot, the big one that goes out from the thermostat, the other ones were cold..
tomorrow i will flush the whole coolant and replace the therostat
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  #24  
Old 10-06-2009, 03:02 PM
Josh Josh is offline
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My car hasn't done it since I moved to Eugene... probably because if I drive its only in town and not up any hills. I can run it up to 60mph flatout and not have the temp gauge go up... it used to go up if I did that. Its a bit colder out now though and it seems to happen most when it was hot. Its a really weird problem.
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  #25  
Old 10-07-2009, 10:25 AM
lalozf lalozf is offline
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I replaced thermostat and coolant and the problem got worse, the car overheats to the red line.
we let the thermostat opened and tomorrow we will change the pump
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  #26  
Old 10-07-2009, 10:44 AM
IceV_760 IceV_760 is offline
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Old original water pump have only 4 blades, and its same whats used
on 4-cyl diesel. But theres nowadays out waterpumps with 6 blades,
causing higher water flow. I believe tho at you have air in your system somewhere, blocking the water flow. These are real beasts to remove air from system,
often its just plain luck.

By the way, have you car yet overheated really?
Since, these are like one-shot engines, one overheat, and cylinder head is done.
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  #27  
Old 10-07-2009, 12:03 PM
lalozf lalozf is offline
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no it did not overheat, we were testing only.
we tried one hose (the the first out of pump way), we unplgged it and it did not throw water with the car turned on, thatīs why we think the pump is dead.
tomorrow we will know, with the new pump.
anyway how could I know if it is only air blocks?
and how could I get rid of them?
thanks
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  #28  
Old 10-11-2009, 02:56 AM
lalozf lalozf is offline
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well, I flushed the coolant 3 times, changed the pump (for one with 5 blades, I had one with 7 blades in the car before) the thermostat, and the car overheats in 2 minutes, I do not have de owners manual, and did not open cold star device (). I read it today
yesterdat I found the problem I did not have heat,by the blower fan, so I did have air in the circuit, I went through several bumps, touched the coolant hoses and played with hot air selector. and the car asked me for 3 litres of coolant more!!!!, that was the problem.
Now is ok, PROBLEM SOLVED.
thanks
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  #29  
Old 10-11-2009, 09:02 AM
IceV_760 IceV_760 is offline
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Nice to hear you get it work as intented.
These are real shits to air, already worrying tomorrow
when i change my upper water hose.
Makes me probably to lose my nerves atleast once, but well,
its normal with this engine.
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  #30  
Old 08-20-2014, 06:45 PM
RedArrow RedArrow is offline
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Default Let`s bring this important post back. i`ll check mine tomorrow.

Quote:
Originally Posted by v8volvo View Post
All D24T Volvos should be modified in this way. It's not good for the engine to have a "hot air intake". On all of mine, I remove the metal flex tube from the header to the airbox and remove the little plate on the header that it connects to (just so that it's not sitting there looking like something is supposed to attach to it). Then I open up the airbox and use a small screw to permanently fix the air diverter door in the bottom of the airbox assy in the "cold" position (I screw it shut on the hot side). On virtually any older Volvo, this system is almost guaranteed to be broken and it always fails in the hot position. This makes for worse performance, more wear and more heat in the engine, which is not what you need if you are trying to diagnose an overheating issue.

Everyone who hasn't checked this on their car should do it! A very easy and important modification...
Let`s bring this important post back.
Thanks v8volvo!
I`ll check mine tomorrow. Almost sure it has been done already.
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