I have a problem with readings on my battery gauge. All my lights are dimming and getting over bright while the gauge shows a decrease and increase in voltage.
1992 Dakota 3.9L LE

I just had a new alternator installed but still have the problem.

Error code 41- Generator feild not switching properly.

I suspect the ECM and voltage regulator that is built in.

Any suggestions are welcomed, especially a reliable company to buy a new or rebuilt unit. It looks like I can probably install this myself ??

Also had failure of EGR sytem which should be unrelated and will post elsewhere.

Thanks

 

If it is not the alt. It is a wire problem. Or a computer problem. But most likely it is a wire problem. Check the alt first. Take it to most auto parts stores they can test it for free.

 

New Alternator professionally installed and checked for proper voltage- but will retest.

Could the ASD relay cause this problem ?

Severe fluctuation of volt meter (pegs all the way down and up).

Lights dim severely and then over bright.

Thanks

 

No the ASD relay will not cause it.

 

Installed used ECM/ECU Module

Everything works !

Thanks- Great Forum !

 

Glad you got it working!