Question about 1986 Nissan Pickup 4WD 1986
My truck (1986.5 Nissan D21 4x4 VG30 V6 manual trans) began running very rich little by little. If the truck is cold or has not been driven for a long time it runs great. Once I stop the truck for a little while and go to start it, it will start right up but then begins running very rich and idles rough. ECm is throwing trouble coded 31 and 24. I replaced the O2 sensor and Mass air flow sensor about 3 years ago. I cannot seen to get the ECM to go to mode #3. it just starts producing codes listed above. AC currently does not have any refridgerant. have any advice?
FROM WHAT I FOUND OUT ON MY SAME TRK ONLY 94' IS THE DIAPHRAM ON THE FUEL PRESSURE REGUALTOR IS SLUGGISH OR BLOWN. DISCONNECTING THE VACCUM LINE AND PLUGGING THE MANIFORD PORT HAS HELPED UNTIL I AM ABLE TO AFFORD THE REGULATOR. TO HELP CLEAN THE OXY SENSOR, SPEED UP THE IDLE AND DISSCONNECT THE BRAKE BOOSTER VACCUM LINE AT THE ENGINE. THE FRESH AIR WILL SOMEWHAT HELP CLEAN THE SENSOR IF IT IS ABLE TO BE HELPED. I AM TOLD THAT THE OXY SENSOR ON THESE MODELS IS CRIDICAL. JACK
Posted on Jun 14, 2010
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Posted on Jan 02, 2017
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