Toyota MR2 Message Board - View Single Post - Electrical Issue,various components affected

chuyjmv · 06-19-2009, 07:44 PM

What's Up Everyone!
I have a problem with my 1987 mk1 4age that has been bugging me for quite some time now. It first started with my headlamps not working,& a loud buzzing noise coming from the lower left kick panel area.I finally traced it to bad circuitry at J/B 4 (or J/B 3!). I removed all grounds (earths) from said J/B,& made my own ground (earth).I now have headlights that turn on! I replaced the relay that was making all that loud buzzing noise for good measure.
Then my battery started draining! I found that the eng bay fan never turns off after removing key from ignition,& intermittently will not come on either (after driving & turning car off).I also noticed that the needle for the battery guage drops when using turn signals,dome light doesnt work when opening either door (manually does turn on),cluster & a/c lights flicker,then turn off.If I cycle the headlight switch,cluster lights come back on! I have already replaced the headlamp sw! I have tried finding a replacement J/B with no luck. Has anyone else run into this issue?? Any info would be greatly appreciated. I'm tired of having to disconnect the battery!

06-19-2009, 07:44 PM	#1 (permalink)
chuyjmv No Skills Join Date: May 2009 Location: San Jose, CA USA Posts: 3 Thanks: 0 Thanked 0 Times in 0 Posts iTrader Rating: (0/0% )	Electrical Issue,various components affected What's Up Everyone! I have a problem with my 1987 mk1 4age that has been bugging me for quite some time now. It first started with my headlamps not working,& a loud buzzing noise coming from the lower left kick panel area.I finally traced it to bad circuitry at J/B 4 (or J/B 3!). I removed all grounds (earths) from said J/B,& made my own ground (earth).I now have headlights that turn on! I replaced the relay that was making all that loud buzzing noise for good measure. Then my battery started draining! I found that the eng bay fan never turns off after removing key from ignition,& intermittently will not come on either (after driving & turning car off).I also noticed that the needle for the battery guage drops when using turn signals,dome light doesnt work when opening either door (manually does turn on),cluster & a/c lights flicker,then turn off.If I cycle the headlight switch,cluster lights come back on! I have already replaced the headlamp sw! I have tried finding a replacement J/B with no luck. Has anyone else run into this issue?? Any info would be greatly appreciated. I'm tired of having to disconnect the battery!