1984 300TD Euro. My dash has an ABS light. How can I verify that I have ABS for sure?

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1984 300td euro turbo

Look under the hood for an ABS pump -- it will have electrical cables and a whole nest of brake fluid lines, similar in size to injector hard lines. Look on the front wheels -- there will be an electrical cable going to a speed sensor (NOT the cable that goes to the brake pad wear sensor). I don't know where they hid the electronics of the ABS but probably somewhere out of sight. Finally, you could drive the car and, someplace where it's safe, stand on the brakes as hard as you can. You should feel a pulsating in the brake pedal as the ABS turns the pressure off and on. Incidentally, the ABS light should come on for ten seconds when you first start the car (meaning, during pre-glow).

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"Buster" in the '95

Our all-Diesel family
1996 E300D (W210) . .338,000 miles Wife's car
2005 E320 CDI . . 113,000 miles My car
Santa Rosa population 176,762 (2022)
Total. . . . . . . . . . . . 627,762
"Oh lord won't you buy me a Mercedes Benz."
-- Janis Joplin, October 1, 1970

Is this what you're talking about?

Attached Thumbnails

 

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1984 300td euro turbo

Yes, that's an ABS pump. Go try it out.

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"Buster" in the '95

Our all-Diesel family
1996 E300D (W210) . .338,000 miles Wife's car
2005 E320 CDI . . 113,000 miles My car
Santa Rosa population 176,762 (2022)
Total. . . . . . . . . . . . 627,762
"Oh lord won't you buy me a Mercedes Benz."
-- Janis Joplin, October 1, 1970

I'll try to find an empty parking lot tomorrow! Fun!

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1984 300td euro turbo

Are there any dirt roads around Brooklyn? It is easy enough to try on dirt roads.

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Jim

If it works properly, you can drive down a road with one side on the pavement & the other side on the dirt & hit the brakes as hard as you can & it wont skid on the wheels on the dirt. It kind of does your head in a bit the first time you do it. You find yourself wanting to correct for a car sliding in the dirt & it doesnt.

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Grumpy Old Diesel Owners Club group

I no longer question authority, I annoy authority. More effect, less effort....

1967 230-6 auto parts car. rust bucket.
1980 300D now parts car 800k miles
1984 300D 500k miles
1987 250td 160k miles English import
2001 jeep turbo diesel 130k miles
1998 jeep tdi ~ followed me home. Needs a turbo.
1968 Ford F750 truck. 6-354 diesel conversion.
Other toys ~J.D.,Cat & GM ~ mainly earth moving

If the light comes on when you start the car, then goes out after a few seconds after starting the motor and stays off after you drive the ABS should be working properly.

-J

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1991 350SDL. 230,000 miles (new motor @ 150,000). Blown head gasket

Tesla Model 3. 205,000 miles. Been to 48 states!
Past: A fleet of VW TDIs.... including a V10,a Dieselgate Passat, and 2 ECOdiesels.
2014 Cadillac ELR
2013 Fiat 500E.

Actually... It does turn on and then turn off BUT when I put the car in drive and hit the accelerator pedal, it turns on. It stays on until I shut the car off. I think it's the OVP relay. One should be arriving tomorrow or on Monday.

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1984 300td euro turbo

The only way I ever got my 300d's abs to go off was to pull off the road, onto a grassy shoulder, at highish(45) speeds and stand on the brakes. This was on a country road with nice flat golf course type shoulders.

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08 R320 CDI current

Past
95 E420
87 300D Turbo 5spd
90 300TE
83 300SD
85 300TD
92 400E
85 190D

Ya... I'm not going to try that in Brooklyn. Going to CT next week. Maybe I'll try it out there. Scare the girlfriend. FUN!

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1984 300td euro turbo

If the light comes back on once you start moving there is probably a bad wheel speed sensor. I'd say it's probably one of the front ones, too.

-J

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1991 350SDL. 230,000 miles (new motor @ 150,000). Blown head gasket

Tesla Model 3. 205,000 miles. Been to 48 states!
Past: A fleet of VW TDIs.... including a V10,a Dieselgate Passat, and 2 ECOdiesels.
2014 Cadillac ELR
2013 Fiat 500E.

There are 2... Say if my brake sensor is broken, would that also cause the light to come on or is it just the ABS sensor?

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1984 300td euro turbo

Nope, the brake wear sensors are 100% separate from the ABS system. I bet the wiring diagram from a W126 would be close enough to help.

Here is a thread where I was working on the same ABS system on my Audi.

-J

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1991 350SDL. 230,000 miles (new motor @ 150,000). Blown head gasket

Tesla Model 3. 205,000 miles. Been to 48 states!
Past: A fleet of VW TDIs.... including a V10,a Dieselgate Passat, and 2 ECOdiesels.
2014 Cadillac ELR
2013 Fiat 500E.

Really appreciate it. Thanks!

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1984 300td euro turbo