W123, Electrical

1982 300D Mercedes dies under load

Was recommended by others to reach out to you for help. I own a 1982 300D that is stalling when under a load The car started stalling when I came to a stop. I figured it was a good time to park it and replace rear cv's. 3 weeks have gone by and I have been having starting issues ever since. I first replaced both the primary and secondary fuel filters, next drained and boiled out fuel tank, blew out fuel lines, removed, cleaned, and replaced 2 of the 5 injectors, checked for any vacum leaks, and lastly fiddled with injector pump adjustment.

Chassis Model Number

W123

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Diesel Engine Specific Aid

1980 300TD engine RPM valeus for 65 mph?

My 1980 wagon seems to rev higher than expected at 65mph. I installed a piezo-tach to get a look at engine RPM's. At 65 it runs about 3200 rpm, consistantly. If I count gear changes, I notice 3 shifts (when in Drive - I understand that in D the car starts off in 2nd). If I manually shift from 1st to Drive I count 4 shifts.

Tranny is properly filled, no abnormal noises either. I replaced both the CV shafts and while I was in the rear end nothing looked odd (had 2 split boots, that's why the change was needed).

Chassis Model Number

W123

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Body and Interior Specific Aid

'82 300 TD Wagon Leveling System Question

Okay, I was wondering if any of you guys could help me. I have noticed that my rear end on my wagon looks fine after I have finished driving. However, after some time goes by when I come back the drivers side has dropped down a couple inches. Also, when I drive, sometimes I hear what must be the leveling pump making some noises that sound kind of like Darth Vader breathing or something. I don't know if this means that I have a leak on the system or what. Does anybody out there know what I need to check/fix?

Chassis Model Number

W123

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Body and Interior Specific Aid

82 300TD Brake pedal sinks to the floor

So, I had to replace my front brake calipers on my '82 300 TD because they had rusted. After putting on new rubber brake hoses and new front brake calipers I of course bled the brakes. However, I got in the car and pumped the brakes last night and noticed that the brake pedal and after a few seconds the pedal would fall to the floor. Do you think that there could be some air still trapped in the brake line somewhere, or is there something else that I should check.

Chassis Model Number

W123

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Body and Interior Specific Aid

81 240D hard brake pedal in rain

I have an'81 240D that is my daily driver from Marysville to Boeing Field. While she has 295T the car has always received very good care by mechanically adept owners (I am the second owner) and runs beautifully.

Except- when it rains quite a bit after a few miles the brakes will act as if the pedal is “hard” or fading and it takes longer for the car to stop. If I hold my foot (medium to light pressure) on the brake for a few moments, there is a barely perceptible pull to the right-then the brakes return to their normal good stopping ability.

The problem may not occur again-not even if I go through a mud puddle. This only occurs when it rains and we’re talking a steady rain! It never occurs with dry pavement or simply moist pavement (fog, misting etc.).

Chassis Model Number

W123

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Body and Interior Specific Aid

84 300TD wagon broken hood release pull

well i'm almost at my wits end with this thing - certainly at my wallets end. Can anyone tip me toward an easy way to get the hood up after the brilliantly designed plastic latch that you pull between the grill breaks? I'm sure i can spend half the day coming up with something but if there are any quick ideas out there i'd love to hear them. Thanks in advance.

Chassis Model Number

W123

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Body and Interior Specific Aid

Cold starting experiences/early 300D/240D - info

I'm not asking for help...just making an observation...have a '77 240D and a '79 300D acquired this summer here in 40 below possible Montana (where even treated dirtydiesel won't fly)...The 240D worked great until the cold morning start was sub 14 degrees F! 300D worked fine...Diagnosed issue and couldn't believe the 240s glow plugs were shot (all 4)! I thought they couldn't start at all w/o glow plugs??? On the 240, we thought it was our biodiesel...but it must have been the glow plugs as the 300 had the same fuel and started right up. These cars are amazing!

Chassis Model Number

W123

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Diesel Engine Specific Aid

Keep Having to Replace Battery 1985 300TD

I've had my 300TD for two years now. Between my initial pre-purchase test drive and picking up the new car, the battery went dead and wouldn't take a charge. The original owner put in a new Mercedes Benz battery. A year later, that battery went dead and wouldn't take a charge. I bought an Autozone 49-DL battery (same size and amp/hours as original). A year later, it is dead and won't take a charge. I've been trying to charge it with the battery disconnected from the car and it charges endlessly. Any idea what causes this or where to start troubleshooting?

Chassis Model Number

W123

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Body and Interior Specific Aid

oil out the dipstick 1982 300 D

I just purchased an 82 300d turbo. I changed the oil and drove it 60 miles. Checked the level at my destination topped it up (less than 1/2 a quart) drove home. 3 miles from home the oil pressure plummeted STOP! Oil all over. dipstick not entirely seated in its tube. Added four quarts to get level back on the dipstick. What the bleep! Today I hooked a hose up to the dipstick tube and put the other end in a plastic container. Sure enough filled up half a quart of oil in about 20 minutes.

Chassis Model Number

W123

Forums

Diesel Engine Specific Aid

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