I have a problem with my w123/ 1983 300DT.It will not shutoff if climate controll unit is running.Does anyone know what might be the problem?
Thank's.

One of the vacuum pod is leaking, leaking real bad. The last time it happened to me was the pod underneath the dash, near the pedal. You can verify it by isolating the green vacuum hose which control the ccu under the hood. It could be other pod.

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Not MBZ nor A/C trained professional but a die-hard DIY and green engineer. Use the info at your own peril. Picked up 2 Infractions because of disagreements. NOW reversed.

W124 Keyless remote, PM for details. http://www.peachparts.com/shopforum/mercedes-used-parts-sale-wanted/334620-fs-w124-chasis-keyless-remote-%2450-shipped.html

1 X 2006 CDI
1 x 87 300SDL
1 x 87 300D
1 x 87 300TDT wagon
1 x 83 300D
1 x 84 190D ( 5 sp ) - All R134 converted + keyless entry.