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Volvo RWD 700 Forum

INDEX FOR 8/2010(CURRENT) INDEX FOR 1/2004 700 INDEX INDEX (NO RELOAD) [<<]  [>>]

VIEW    READ ONLY    PRINT   SAVE   A    A  radio suppressor relay 700 1986 posted by  Don Foster on  Wed Jan 7 05:39 CST 2004 Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS]     [IGNORE ALL POSTS] last visit: Wed Jul 28 06:31 CST 2010 [RELATED] The so-called "radio suppression relay" controls power to the fuel injectors. If the relay becomes troublesome, it can intermittently disable the fuel injectors (this happened to my '91 740 -- resoldering completely solved the problem). It's called "radio suppression" because by using a relay to remotely control the injector power, it suppresses RF interference from reaching the radio. Injectors (and switching their power) causes considerable electronic noise on the power line, and Volvo decided to keep that noise under the hood rather than bring it into the passenger compartment on the wiring harness. "...and it will at times get engine noise through the radio..." Most likely this is ignition noise, not electrical switching noise from the injectors. -- Don Foster (near Cape Cod, MA) Mark this post as an answer to my question<- Use this feature to mark quality replies to your post. Select, copy to buffer, and paste anywhere: <a href="http://www.brickboard.com/RWD/volvo/732937/740/760/780/radio_suppressor_relay.html ">radio suppressor relay</a>

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• radio suppressor relay [700][1986]
  posted by  aleekat  on Wed Jan 7 12:22 CST 2004 > V

• radio suppressor relay [700][1986]
  posted by  john sargent  on Wed Jan 7 08:09 CST 2004 > V

• radio suppressor relay [700][1986]
  posted by  aleekat  on Tue Jan 6 23:55 CST 2004 > V

• radio suppressor relay [700][1986]
  posted by  Andrew in AL  on Tue Jan 6 23:17 CST 2004 > V
  • radio suppressor relay [700][1986]
    posted by  Don Foster  on Wed Jan 7 05:39 CST 2004 > V
    • radio suppressor relay [700][1986]
      posted by  Andrew in AL  on Wed Jan 7 07:55 CST 2004 > V
      • radio suppressor relay [700][1986]
        posted by  Don Foster  on Wed Jan 7 09:03 CST 2004 > V
        • radio suppressor relay [700][1986]
          posted by  jackart  on Wed Jan 7 09:56 CST 2004 > V
          • radio suppressor relay [700][1986]
            posted by  Don Foster  on Wed Jan 7 10:22 CST 2004 > V
          • radio suppressor relay [700][1986]
            posted by  john sargent  on Wed Jan 7 10:17 CST 2004 > V

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