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As a few of you folks are aware, I am always trying to simplify the electrical system on my cars. Sometimes I am successful and other times, well...
Last year, I removed the Radio Suppression Relay from the circuit on the 765T (when it was a 'T') after discovering that it ran quite well with the relay jumpered. In the year following there have been no issues with the fuel system that would indicate any problems with the removal, as I have often stated on this board. Wrong! For the past year the 765 has had a dead battery whenever the car wasn't cranked in 12 hours. Since I swapped the solid state climate control out and had built a fan speed relay circuit, I suspected that something under the dash was responsible, but have never been able to find the culprit.
I was under the hood last week and had the thought to check the RSR circuit and found that it remained energized with the ignition in the 'off' position meaning that the resistors also were hot and a minimal leakage on the ground side of the fuel injectors was bleeding my battery. I wired in a $5.00 30AMP relay from Sherco-Auto and the problem was corrected.
While I still am not a proponent of soldering old technology, I would now recommend replacing the factory RSR (and condensor fan) relays with new aftermarket units for a fraction of the cost of the OEM equipment. The Haynes manual does have a pretty good schematic for these cars so the circuit is relatively easy to trace.
For those of you that followed my earlier advice, my heartfelt apologies for any inconvenience. Mea culpa, mea culpa, mea maxima culpa, etc.
Regards,
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Will Dallas, www.willdallas.us, www.willdallas.org, www.willdallas.com 86 245 DL 222K miles, 93 940 260K miles, 88 765 GLE 152K miles, 87 Honda Civic 96K.
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