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#1
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ABS pump
'94 E320 Cab....ABS pump actuates immediately after startup. is this a test function?
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#2
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Does it pump continually?
I had this problem after I accidentally shorted a live +12v wire on to the case of the ABS ECU The light wasn't even coming on, but it was pumping the whole time. It's not at all good for it, and you should disable it if this is the case.. either unplug the ABS ECU (a search on this forum should tell you where it is) or perhaps the fuse for it.
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190E's: 2.5-16v 1990 90,000m Astral Silver 2.0E 8v 1986 107,000m Black 2nd owner http://www.maylane.demon.co.uk/190esmall.jpghttp://www.maylane.demon.co.uk/190esmall2.jpg |
#3
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Any resolve?
My car (95 E420) is doing the same thing and I'm wondering if it's normal or not. I spoke with a couple of mechanics at my local dealership and they said that this is part of its normal 'test' cycle following the start of the car. Does this so called 'test' actually run the pump?
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1995 E420 1998 SL500 Sport 2009 E350 Sport 1995 S500 Coupe 1992 500 SEL |
#4
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Yes it does. Normally it is hard to hear, but if you roll forward with your foot on the brake, you'll feel it run for less than a second about a car-length or two from your starting position (after first starting the car).
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Gone to the dark side - Jeff Last edited by babymog; 02-19-2009 at 05:58 PM. |
#5
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My pump will run with my foot on or off the brake. I called around and spoke with a few shop foremen to get their take on the issue. From what I understand, the later model (94-95) E-Class perform a self test that actually activates the pump where as the older 124s' self test does not. Either way, I replaced the rubber mounts from the pump to the car which helped to damper the vibration from the pump running which helped a little bit.
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1995 E420 1998 SL500 Sport 2009 E350 Sport 1995 S500 Coupe 1992 500 SEL |
#6
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All 124s I've owned, from '87 through '95, diesel and gasoline, RWD and 4matic, sedan and wagon (should I go on?) cycle the pump one time when you first start moving, with or without your foot on the gas.
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Gone to the dark side - Jeff |
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