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What is it?

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Old Nov 21st, 2020, 20:31   #1
Dippydog
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Default What is it?

After owning it for a year and a half I'm still making "discoveries" on my MkII 960 [an early one was no dipstick for the auto box] todays "find" is what appears to be a cylindrical device mounted behind the passenger side headlamp[and a bit lower so it sits at a height below the black plastic bulb cover]and ahead of the air filter box.It has what look to be two vacuum pipes and a larger bore rubber pipe going to the top of it.Any ideas what it is and what it's for?
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Old Nov 21st, 2020, 21:57   #2
Laird Scooby
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Originally Posted by Dippydog View Post
After owning it for a year and a half I'm still making "discoveries" on my MkII 960 [an early one was no dipstick for the auto box] todays "find" is what appears to be a cylindrical device mounted behind the passenger side headlamp[and a bit lower so it sits at a height below the black plastic bulb cover]and ahead of the air filter box.It has what look to be two vacuum pipes and a larger bore rubber pipe going to the top of it.Any ideas what it is and what it's for?
A phot would be helpful but from the description sounds like maybe a cruise control actuator. Could also be the electric headlamp aim adjuster to lower the dipped beams when carrying a heavy load so you don't dazzle oncoming traffic.
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Old Nov 21st, 2020, 22:13   #3
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Originally Posted by Dippydog View Post
After owning it for a year and a half I'm still making "discoveries" on my MkII 960 [an early one was no dipstick for the auto box] todays "find" is what appears to be a cylindrical device mounted behind the passenger side headlamp[and a bit lower so it sits at a height below the black plastic bulb cover]and ahead of the air filter box.It has what look to be two vacuum pipes and a larger bore rubber pipe going to the top of it.Any ideas what it is and what it's for?
The air blower to heat the cat
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Old Nov 21st, 2020, 22:28   #4
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I'll see what I can do re-photos but I'm not very good[OK totally hopeless] when it comes to working out computer stuff.
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Old Nov 21st, 2020, 23:12   #5
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Originally Posted by Dippydog View Post
After owning it for a year and a half I'm still making "discoveries" on my MkII 960 [an early one was no dipstick for the auto box] todays "find" is what appears to be a cylindrical device mounted behind the passenger side headlamp[and a bit lower so it sits at a height below the black plastic bulb cover]and ahead of the air filter box.It has what look to be two vacuum pipes and a larger bore rubber pipe going to the top of it.Any ideas what it is and what it's for?
It is probably the carbon cannister for the EVAP system
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Old Nov 22nd, 2020, 00:38   #6
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The air blower to heat the cat
The air blower is on the drivers side https://www.volvoforums.org.uk/showthread.php?t=311778
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Old Nov 22nd, 2020, 09:27   #7
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The air blower is on the drivers side https://www.volvoforums.org.uk/showthread.php?t=311778
It will be carbon canister then.
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Old Nov 24th, 2020, 01:35   #8
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It is probably the carbon cannister for the EVAP system
If it's on the LHS then that's exactly what it is.
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Old Nov 24th, 2020, 10:19   #9
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Carbon canister it is then.thanks chaps another mystery solved.
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Old Nov 25th, 2020, 18:42   #10
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It has what look to be two vacuum pipes and a larger bore rubber pipe going to the top of it
There are two thin plastic pipes connected to the top cap. The first is indeed for vacuum which controls the outlet valve that releases vapour from the canister only when the engine is running. The second one is to carry that vapour into the throttle body. The rubber hose connects the canister inlet to the fuel tank breather.

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Originally Posted by Laird Scooby View Post
.....maybe a cruise control actuator. Could also be the electric headlamp aim adjuster to lower the dipped beams when carrying a heavy load so you don't dazzle oncoming traffic.
Electric vacuum pump for cruise control is mounted on the inner wing/wheel arch in line with the strut tower. Electric headlight adjusters are indeed in the same area to the EVAP canister but are rectangular and mounted directly to the back of the lamp casing whereas the canister sits lower down in the "battery" tray.
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