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Wiper motor 300e

Tiny
TUNEDUDE
  • MEMBER
  • 1992 MERCEDES BENZ 300E
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 128,000 MILES
Wiper motor stopped and started smoking. Replaced with another motor, but wiper starts and stops after 2 inches. Double clicking noise near fuse box
Monday, January 24th, 2011 AT 4:47 AM

3 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,320 POSTS
Check near the fuse box for a bad relay. Chances are when the original motor burned up, it damaged the relay.
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Tuesday, January 25th, 2011 AT 1:19 AM
Tiny
TUNEDUDE
  • MEMBER
  • 2 POSTS
Could not locate a relay near fusebox. Are you sure one exists for this car? I do know that an overload relay is located in between the computer and wiper motor, but why would I hear a clicking near the fuse box? Also, the wiper motor DOES work without being connected to wiper arm. To be sure I had everything lined up, I ran the motor for one cycle and made sure I installed the arm while the wiper was in the "off" position.
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Tuesday, January 25th, 2011 AT 6:26 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,320 POSTS
I believe the rellay you are hearing is the delay. Locate where the noise is coming from near the fuse box. If the motor is working, that is a good thing.
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Tuesday, January 25th, 2011 AT 7:24 PM

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