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Battery light - what's it telling me? #1104462
07/14/18 10:27 PM
07/14/18 10:27 PM
G
GrantCee  Offline OP
Getting the Wheeling Fever
Joined: Nov 2013
Posts: 78
Oregon
Some of you may remember a recent thread where I was doing a Weber carb swap on my '87 2.6l. Just to recap: everything went well, the engine runs far better than it did with the old Mikuni. Very happy and highly recommend it.

However, there's this little problem that surfaced after I did the swap: the battery light is on all the time. I've checked the alternator (putting out a steady 14.3v at idle) and the battery is in good condition. As noted in the previous thread, I've disconnected and removed all of the emission control mechanisms (we don't have inspections where I live) and disconnected the ECU. Still the battery light is on.

What am I missing? What else could it be trying to tell me?

Last edited by GrantCee; 07/14/18 10:27 PM.
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Re: Battery light - what's it telling me? [Re: GrantCee] #1104468
07/21/18 05:53 PM
07/21/18 05:53 PM
rxinhed  Offline
Trail Leader
Joined: Feb 2005
Posts: 7,148
Gerber, CA *****
Have you looked for shorts or corrosion across the headlight relay, light switch contacts, main and sub fusible links, voltage regulator, and the hazard and ignition switches?

These are the only things described in the FSM charging circuit diagram. The battery light should activate for low amperage, indicative of battery condition. See 1989 Montero FSM chapter 8.


1988 Mighty Max turbo 2.6 service body
1980 Power Wagon W400
Sundry Mitsubishi Montero Gen 1 parts, Gen 1 and Gen 2 Max parts
Parts vehicles: 89 LS Montero 4-door, 2002 Sport AWD
For Sale: 1989 Power Ram 50 extended cab, #277 Montero
Re: Battery light - what's it telling me? [Re: rxinhed] #1104491
07/29/18 11:54 PM
07/29/18 11:54 PM
G
GrantCee  Offline OP
Getting the Wheeling Fever
Joined: Nov 2013
Posts: 78
Oregon
Thanks — I'll check those. I'm not good with wiring diagrams!

Re: Battery light - what's it telling me? [Re: GrantCee] #1104615
10/13/18 08:03 PM
10/13/18 08:03 PM
G
GrantCee  Offline OP
Getting the Wheeling Fever
Joined: Nov 2013
Posts: 78
Oregon
An update...

I checked everything to the best of my ability, and no luck. Battery light continued to be on.

Now with the cooler weather of fall, I noticed that the engine didn't want to start very easily. I did some fine tuning of my still-new Weber installation, and discovered that the electric choke wasn't working. When I installed the thing I found a switched power lead that used to go to the vacuum control box, and simply plugged into it. Now I discover that it only has power intermittently, causing the choke to fail. I found another connector in that plug which definitely does have solid, switched power and moved the connection to it. Now the choke works great.

What's more, the battery light went off at the same time. Not sure what the connector was or why it would activate the battery light, but it doesn't any longer.

And so continues my adventure!


Moderated by  Macka, Mudraider, off-roader, PajEvo, rxinhed 

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