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Fuel relay replacement 850

posted by  B.B. on  Wed Dec 25 22:36 CST 2013
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last visit: Mon Oct 6 13:15 CST 2014
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Everyone realizes that the timing belts need to get replaced before they bust.

Yet there's a lot of activity because of busted Fuel relays throughout the
Volvo Nation. In the 4 Cyl Red Block world it's called the RSR (Radio Safety Relay) and in the 850 5 Cyl world it's called the "main fuel relay".

There's posts galore everywhere on Brickboard about these relays which are an essential component of Bosch Fuel Injection, namely to shutdown fuel when the engine quits/ or there's a crash etc. The RSR and "Main Fuel Relay" are another name for a safety device. The bad news is when the relay quits, the engine is off.

Volvo didn't make long term provisions for servicing it seems, and the Fuel relay
obviously has a service life expectation just as the timing belt.

Perhaps people can assign a number of miles, years or hours, to decide when it's time to be proactive and get a NEW fuel relay, and not some tired replacement from the boneyard?

Comments?

Bill






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New Fuel relay replacement [850]
posted by  B.B. subscriber  on Wed Dec 25 22:36 CST 2013 >


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