While driving the wife's '87 300TD home from the annual holiday trip to the big city I noticed I had cold feet. Upon inspection I discovered there was no heat coming from the floor registers. Plenty coming out of the dash ones though.

Any thoughts, insights?

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300TD W124, Two VW TDI Passat Wagons,Cummins Ram 250, Kubota Tractor
23 cylinders sipping the sweet sauce of the soy bean

Most likely it's a bad vacuum element "pod" for the footwell vent flaps. If it's like my 94 e320, you remove the radio to access it. Some models have two. Check the vacuum feed from the controller [behind glove box] and also if the element itself itself holds vac. MB defaults to defrost & side vents only. You should still get AC through center vents.

Bob
$38 MB dealer price, slightly less from online sources.

Bob is correct. You should have 2 pods that are easy to get to. Does the passenger side have heat? If those are your only 2 that are worn out consider yourself very lucky. The other 5 take just a tad longer to get to.

This thread should help.
W124 climate control vacuum pod replacement

Chris

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1987 300TD 309, xxx 2.8.2014 10,000 mile OCI


Be careful of the toes you step on today, as they may be connected to the ass you have to kiss tomorrow. anonymous

“Be who you are and say what you feel, because those who mind don’t matter, and those who matter won’t mind.” Dr. Seuss

No heat on either side of the front. I forgot to check but would that mean there is also none from the rear floor?

Thank you two fine gentlemen. And that thread you posted above is very helpful Chris.

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300TD W124, Two VW TDI Passat Wagons,Cummins Ram 250, Kubota Tractor
23 cylinders sipping the sweet sauce of the soy bean

Probably that both floor pods are worn out. Those are the easiest to get to. The defrost is the default position, so that is why you are getting heat there. The climate control unit(CCU) also go bad, so you probably want to rule that out as well. Can you pull the glove box and test the system per the instructions in the thread I sent you?
Chris

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1987 300TD 309, xxx 2.8.2014 10,000 mile OCI


Be careful of the toes you step on today, as they may be connected to the ass you have to kiss tomorrow. anonymous

“Be who you are and say what you feel, because those who mind don’t matter, and those who matter won’t mind.” Dr. Seuss

Beyond my ability Chris, but I will pass along all of this info to the guy who works on the car, in hopes that it reduces his time and forwards his understanding of the situation.

Thanks once again. I'll report back with results.

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300TD W124, Two VW TDI Passat Wagons,Cummins Ram 250, Kubota Tractor
23 cylinders sipping the sweet sauce of the soy bean

Some of the '87 model year cars have only a single vacuum pod to actuate the floor flaps. It depends when in the model year the car was manufactured. My '87 wagon had a single pod. It was a late build, as I recall.

- JimY

You are right. I forgot about that. I don't remember what the cut off was, but they did go to the single floor pod.

__________________
1987 300TD 309, xxx 2.8.2014 10,000 mile OCI


Be careful of the toes you step on today, as they may be connected to the ass you have to kiss tomorrow. anonymous

“Be who you are and say what you feel, because those who mind don’t matter, and those who matter won’t mind.” Dr. Seuss