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#1
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Brake wires..?
I have a 1980 240D w123, and I drove her home from the guy I bought her off of, and the front brakes are very grabby, but they pulsate. I checked the brakes and found that there is a wire going into the brakes. Interested, I followed the wire up through the wheel well (on the drivers side tire) and found the poor thing cut, tangled underneath a big bunch of wires coming out of the firewall. The rest of this cable goes under the relay box on the top of the drivers side tire well, I found that it has 3 wires wrapped in a black sheath on the cut side of the connector, and 2 wires on the side that goes under the fuse box. So anyway I guess it got pinched or ripped sometime before I got her. Anyone know what these wires are for?? Thanks in advance,
Nick |
#2
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Brake pad wear sensor?
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1981 240D 143k 4 spd manual -SOLD 2004 VW Jetta TDI 5 speed 300k -still driven daily |
#3
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they alert you to pad thickness by grounding to the rotor when you wear out your pads.
a yellow light on your dash will come on.
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John HAUL AWAY, OR CRUSHED CARS!!! HELP ME keep the cars out of the crusher! A/C Thread "as I ride with my a/c on... I have fond memories of sweaty oily saturdays and spewing R12 into the air. THANKS for all you do! My drivers: 1987 190D 2.5Turbo 1987 190D 2.5Turbo 1987 190D 2.5-5SPEED!!! 1987 300TD 1987 300TD 1994GMC 2500 6.5Turbo truck... I had to put the ladder somewhere! |
#4
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I agree.
EDIT: vstech gave the correct technical answer.
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Chad 2006 Nissan Pathfinder LE 1998 Acura 3.0 CL OBK#44 "Pleasure in the job puts perfection in the work." - Aristotle (384-322 B.C.) SOLD 1985 300TD - Red Dragon 1986 300SDL - Coda 1991 - 300TE 1995 - E320 1985 300CD - Gladys |
#5
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oh, and if your brakes are pulsating, first check under your hood for abs system, it will be a box with brake lines coming to it from the master cylinder...
if you do not have it, (very rare to have it...) your rotors are warped and should be replaced.
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John HAUL AWAY, OR CRUSHED CARS!!! HELP ME keep the cars out of the crusher! A/C Thread "as I ride with my a/c on... I have fond memories of sweaty oily saturdays and spewing R12 into the air. THANKS for all you do! My drivers: 1987 190D 2.5Turbo 1987 190D 2.5Turbo 1987 190D 2.5-5SPEED!!! 1987 300TD 1987 300TD 1994GMC 2500 6.5Turbo truck... I had to put the ladder somewhere! |
#6
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hey thanks everyone, it's the wear sensor. im getting the yellow light on the dash. i'll have to check for that box, i doubt it has ABS but maybe.. the car sat for about a year before i bought it so it's most likely the brakes (drum) being warped. it seemed the harder i pushed the brakes when i could on the drive home the lighter the pulsating got.
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#7
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Quote:
Just rust buildup on the rotors from sitting perhaps. Remove a wheel and have a look. Where the pads sat should have no rust in comparison to the rest of the braking area of the rotor. Rotors may clean down enough to be serviceable. If not they can be had for 20.00 or so new apiece. Car may have sat more than a year or in very poor storage conditions. |
#8
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Quote:
there is a drum inside the rotor that is applied with the Emergency/parking brake. 4 wheel discs baby!
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John HAUL AWAY, OR CRUSHED CARS!!! HELP ME keep the cars out of the crusher! A/C Thread "as I ride with my a/c on... I have fond memories of sweaty oily saturdays and spewing R12 into the air. THANKS for all you do! My drivers: 1987 190D 2.5Turbo 1987 190D 2.5Turbo 1987 190D 2.5-5SPEED!!! 1987 300TD 1987 300TD 1994GMC 2500 6.5Turbo truck... I had to put the ladder somewhere! |
#9
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ABS on a 240D, that would be nice, was there such a thing? I had 240D with SLS, some folks never herd of that
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1985 Euro 240D 5 spd 140K 1979 240D 5 spd, 40K on engine rebuild 1994 Dodge/Cummins, 5 spd, 121K 1964 Allice Chalmers D15 tractor 2014 Kubota L3800 tractor 1964 VW bug "Lifes too short to drive a boring car" |
#10
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haha i wish i had ABS tood but the good news would be it is four wheel disks a friend said they were drums. and man, she needs a good hour drive with my pinky toe on the brakes the whole time. it had sat for a good year, outside, before i bought it. poor thing has cancer all over the body, but boy the interior is so nice . so this brake pad wear sensor, it can't short to turn the light on, my light is on all the time now and the wire to the sensor got sliced im going to fix the wire up this weekend and see how that sensor works. thanks again guys.
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#11
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Is it really necessary to replace these every pad change if you change the pads before it comes in contact with the disc ? - Thanks
Last edited by rkpatt; 09-20-2008 at 12:13 PM. |
#12
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Absolutely not.
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