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Old June 6th, 2016, 07:37 PM
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1994 NAS 90 ST
Join Date: Jan 2013
Location: Calgary, Alberta, Canada
Posts: 45
Relay identifcation

After several hours of diagnosis of my 94 NAS D90 not starting I narrowed it to the fuel pump relay.

There are two silver relays under the passenger dash, (photo 1). I replaced the right hand one with a "used" 5 pin relay and it made no difference. I put the old left hand one on the right and the "used" one on the left" and it started perfectly (photo 2). Two questions: 1) what does the left relay do and 2) what does the right relay do. Just to be safe I will replace both, but just curious what I did and why did it work.

Also what is the relay on the far left and the green plug un the right?

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Old June 6th, 2016, 08:14 PM
carlosz's Avatar
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frank stein "frankie" in action RIP
Join Date: Jun 2006
Location: east coast
Posts: 856
blue holder is the fuel pump, black holder is the ecu.
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