2005 V50 T5 overheating
#1
10-04-2021, 05:33 PM
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2005 V50 T5 overheating
Just got my 2005 V50 T5 back up and running after sitting 4 years. Replaced the heater core and changed all fluids.
When I drive and the engine is up to temp, I then accelerate, the temp goes up to the red. When I'm off the accelerator, the temp goes back down.
What could cause this?
When I drive and the engine is up to temp, I then accelerate, the temp goes up to the red. When I'm off the accelerator, the temp goes back down.
What could cause this?
#2
10-04-2021, 08:57 PM
Could be a few things....
1) Bad thermostat (be careful, if it's this, it could cook the engine in short order)
2) Air trapped in the system (did you bleed out the air after the work?)
3) Bad temperature sensor (sounds unlikely, but possible)
There are other things that can cause a "hurting engine" to generate too much heat. Let's hope that's not the case here. The most obvious would be a blown head gasket (meaning your coolant would look a little like a chocolate milk shake).
1) Bad thermostat (be careful, if it's this, it could cook the engine in short order)
2) Air trapped in the system (did you bleed out the air after the work?)
3) Bad temperature sensor (sounds unlikely, but possible)
There are other things that can cause a "hurting engine" to generate too much heat. Let's hope that's not the case here. The most obvious would be a blown head gasket (meaning your coolant would look a little like a chocolate milk shake).
#3
10-07-2021, 07:02 AM
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Could be a few things....
1) Bad thermostat (be careful, if it's this, it could cook the engine in short order)
2) Air trapped in the system (did you bleed out the air after the work?)
3) Bad temperature sensor (sounds unlikely, but possible)
There are other things that can cause a "hurting engine" to generate too much heat. Let's hope that's not the case here. The most obvious would be a blown head gasket (meaning your coolant would look a little like a chocolate milk shake).
1) Bad thermostat (be careful, if it's this, it could cook the engine in short order)
2) Air trapped in the system (did you bleed out the air after the work?)
3) Bad temperature sensor (sounds unlikely, but possible)
There are other things that can cause a "hurting engine" to generate too much heat. Let's hope that's not the case here. The most obvious would be a blown head gasket (meaning your coolant would look a little like a chocolate milk shake).
Coolant looks good. No chocolatey color.
I did not bleed the air. How would I do that?
My initial guess was a thermostat issue. I figured it was locked closed. Especially, since it's been sitting so long.
#4
10-07-2021, 01:34 PM
I don't recall the bleeding process (it's been years since I sold my last Volvo), but there should be plenty of resources online about how to do so.
I would recommend swapping the thermostat - they're not expensive, and do go bad (and the consequences of driving with a stuck thermostat can be REALLY expensive!).
I would recommend swapping the thermostat - they're not expensive, and do go bad (and the consequences of driving with a stuck thermostat can be REALLY expensive!).
#5
10-08-2021, 07:30 AM
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I don't recall the bleeding process (it's been years since I sold my last Volvo), but there should be plenty of resources online about how to do so.
I would recommend swapping the thermostat - they're not expensive, and do go bad (and the consequences of driving with a stuck thermostat can be REALLY expensive!).
I would recommend swapping the thermostat - they're not expensive, and do go bad (and the consequences of driving with a stuck thermostat can be REALLY expensive!).
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