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Registered
Join Date: Mar 2007
Posts: 290
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New Red relay failure
I have ordered new round red relays from several sources including factory ones. They seem of poor quality and fail. I have had several not only fail but also backfeed into the car's electrical system. Anyone else finding the quality of new red relays poor? Solutions?
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07-13-2016, 06:33 AM
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RETIRED
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If they are made by URO, typical.
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1983/3.6, backdate to long hood 2012 ML350 3.0 Turbo Diesel |
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07-13-2016, 06:43 AM
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Registered
Join Date: Jun 2009
Location: Manhattan Beach, California. Factory Delivery-Original owner-Retired engineer
Posts: 5,238
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Failure mode.
Quote:
Not closing? Remove the relay and put 12v on pins # 85 & 86 let's see if the relay closes. I suspect that something is wrong beyond the relay itself. Gerry
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1986 911 Targa. Per Road and Track magazine: Only in L.A.: In the window of a bar in Hermosa Beach, California. "Happy Hour prices during all car chases." |
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07-13-2016, 06:53 AM
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Registered
Join Date: Oct 2005
Location: Capistrano Beach, Ca.
Posts: 7,235
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Also, double check the voltage at terminals 85 and 86 of the socket. With ignition "on," there should be 12v at socket 86 and 0v at 85 (ground.) If somehow the wiring has been altered before you received the car, reversing those sockets will allow the relay to work but will eventually destroy the suppression diode inside the relay and cause a failure.
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L.J. Recovering Porsche-holic Gave up trying to stay clean Stabilized on a Pelican I.V. drip |
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07-13-2016, 07:58 AM
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Registered
Join Date: Mar 2001
Location: Marysville Wa.
Posts: 22,478
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China. Says right on them.
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https://www.instagram.com/johnwalker8704 8009 103rd pl ne Marysville Wa 98270 206 637 4071 |
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07-13-2016, 08:38 AM
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Da cab
