News:

It appears that the upgrade forces a login and many, many of you have forgotten your passwords and didn't set up any reminders. Contact me directly through helpmelogin@dodgecharger.com and I'll help sort it out.

Main Menu

Anyone have any good links to troubleshooting the charging system?

Started by Chargeraddict, July 19, 2009, 07:18:22 PM

Previous topic - Next topic

Chargeraddict


I  have all new components and a rebuilt alt.. and my car is not charging for some reason.   I have no voltage reading on the field terminal on the alt or on the voltage regulator field terminal. I have between 6 - 9 volts on the batt post on the alternator as well. I really dont understand the charging system very well. Wondered if any one has any ideas or a link to some trouble shooting. Thanks.

nascarxx29

Lets start here at the Alternator.I assume its new and been tested and not defective.And you have a good voltage regulator for the year of your car and type of alternator 1 field or 2 field.Use a testlight to see if you have 12 volts at pos bolt on connection at back of alternator.Then you should have key on power to the alt field which is a blue wire that goes from regulator plug connection to the alt field. Followed by a green wire for the 2nd field of the alternator also coming of the regulator plug connection.You need to be sure that the regulator and alternator are well grounded.And you can check by using a testlight with clip on end on +.And touch pointed end to check for ground on alt and mounting area for regulator .The light has to light.If the alternator and regulator is not grounded well it wont work properly.If car remains on the alternator is working .But you still need to know your alternator output voltage that should be around 14 volts .If you car is a 70 and up it will have 2 fields and a different type of voltage regulator .If your car is a 69 and down you will have 1 field and a small black box type regulator.If you have a 70 up alternator and want to use it for a 69- car .It can be done by grounding the extra terminal back to a ground with a jumper wire  .Leaving you with a 1 field alternator
1969 R4 Daytona XX29L9B410772
1970 EV2 Superbird RM23UOA174597
1970 FY1 Superbird RM23UOA166242
1970 EV2 Superbird RM23VOA179697
1968 426 Road Runner RM21J8A134509
1970 Coronet RT WS23UOA224126
1970 Daytona Clone XP29GOG178701

nascarxx29

If you dont have 12 volts battery power at the positive + bolt on alternator connection.Its not going work And you need to findout why theres no power.Also if you have no key on power to alt field .You got a wire or wiring harness issue.On the engine compartment wiring harness.And need to trace it of the wiring diagram
http://www.mymopar.com/index.php?pid=27
1969 R4 Daytona XX29L9B410772
1970 EV2 Superbird RM23UOA174597
1970 FY1 Superbird RM23UOA166242
1970 EV2 Superbird RM23VOA179697
1968 426 Road Runner RM21J8A134509
1970 Coronet RT WS23UOA224126
1970 Daytona Clone XP29GOG178701

Chargeraddict

Thanks, im going to start with checking the grounds and see what happens..