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Why does the exhaust brake come on on a Volvo?

Why does the exhaust brake come on on a Volvo?

If you start the truck with low air in the tanks, you should also hear the exhaust brake come on as air pressure builds after you start the engine. The Volvos use the exhaust brake to help the engine warm up faster (and stay warm at idle).

What kind of brake does a Volvo truck use?

The Volvo Engine Brake, VEB, combines the Volvo Compression Brake and the Exhaust Pressure Governor in the rpm range and results in an outstanding braking performance. The Volvo Compression Brake is integrated in the valve system. It is unique and the design is patented.

Is there a compression brake on a Volvo D12?

The D12 has an exhaust brake which is the first setting on the switch and the second is for compression brake. It is not a three stage “Jake” like some of you guys have. Mine works and i know if it’s on.

Why does my Volvo D12 HDT escapees not work?

As you are slowing down flip the switch on and off, if no difference it is not working. Mine went out a few years ago and it turned out to be the air valve exhaust pressure governor (I think that is the right name). Very pricey the better part of a thousand dollars at the dealer about half that on eBay.

If you start the truck with low air in the tanks, you should also hear the exhaust brake come on as air pressure builds after you start the engine. The Volvos use the exhaust brake to help the engine warm up faster (and stay warm at idle).

The D12 has an exhaust brake which is the first setting on the switch and the second is for compression brake. It is not a three stage “Jake” like some of you guys have. Mine works and i know if it’s on.

Are there any problems with the Volvo D12 motor?

EGR problems are common as well as injectors. Its got 6000k on it. Its not brand new, even if it was brand new its still a Volvo. They have a reputation for fuel economy, they also have a reputation for being unreliable.

How to fix intermittent a / C in a Volvo?

Once the AC clutch obviously disengages itself and begins blowing warm air, turn off the AC with the button on the center console. Give the clutch a few minutes to cool down before turning the AC back on. If the clutch has cooled down enough, it should then reengage without any issues.

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Ruth Doyle