Voltage regulator

[DFM]

Have the old square kinda flat regulator on my 67 barracuda. Has anyone swapped that out with the newer smaller square types thanks

 

[George Jets]

The smaller electronic upgrade is for upgrading from the earlier mechanical voltage regulator, they work good in this instance.

Just replace the newer electronic type you have. If the original OEM part still works, keep using it.

Transpo is American Made, most other parts store ones are made in China. Buyer Beware.


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[DFM]

Vehicle was running . Ran for 5 to 7 minutes then would die connector to the regulator was bad changed it ran fine started one day then died . Now it doesn’t start at all will crank though?

 

[George Jets]

Vehicle was running . Ran for 5 to 7 minutes then would die connector to the regulator was bad changed it ran fine started one day then died . Now it doesn’t start at all will crank though?

Check your battery with a multimeter, should be 12.3 volts.

Then start it up, should read 14.3 volts if it is charging correctly.

Your voltage regulator definitely needs a good ground.


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[67Dart273]

The VR has nothing to do with whether the engine will crank or start. You DO? have the isolated field alternator? should have two field terminals?

 

[Dana67Dart]

Have the old square kinda flat regulator on my 67 barracuda. Has anyone swapped that out with the newer smaller square types thanks

Let's get some basic info here...

1. Your car is a 67 barracuda.
2. Originally it would have had an electro mechanical voltage regulator with a grounded field (typically round back) alternator.
3. Your photo of your voltage regulator shows a later model electronic voltage regulator. These only work on isolated field (typically square back) alternators
4. You are stating you had an electrical issue at some point and after changing the VR things we're good again for a while.
5. The VR does not DIRECTLY have anything to do with starting. If some wires got fried due to some incompatible components in the charging system, then maybe.

Help us help you...

What has been done electronically to the car?
What mechanically has been done to the car?

Post photos of the back of your alternator.

 

[DFM]

so got under the dash moved some wires from the ignition around vehicle started up . Must have a bad connection somewhere. Going to have to find it,

 

[DFM]

Here’s a few pics . Appreciate the info

 

[George Jets]

so got under the dash moved some wires from the ignition around vehicle started up . Must have a bad connection somewhere. Going to have to find it,

Feel around the wiring up in there. If something is warm, that is your loose or corroded connection.


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[DFM]

Changed the VR plug it was worn damaged . Car came wired that way

 

[Cuda Al]

If that alternator has three wires connected to it somebody may have already upgraded it.


Alan

 

[69conv]

When I switched to an electronic regulator there was enough bleed through to run my MSD ignition with the key out of the ignition. Found a mechanical regulator and the problem was solve. I see you have an upgraded electronic ignition. Heads up.

 

[4spdragtop]

You better go thru the wiring with fine tooth comb. That amount of elec tape on alternator is horrendous. Your voltage regulator is 70 and up. There should be 2 field wires on alt and a bigger wire for 3 total. That "Painless" gives me heebie jeebies...

 

[str12-340]

Since you have been fiddling with the VR and then it runs for a while, then dies - the VR grounds through the bolts that hold it in place. If you move it around it may restore the ground for a bit, then fails. Take the VR off and make bare metal contact between the back of the VR around the bolt holes and then on the firewall around the bolt holes. It's a cheap thing to try and may fix it.

 

[Dana67Dart]

Your alternator is a round back.

It MIGHT be a 70 isolated field or an aftermarket isolated field version.

Check that it has 2 field terminals.

Mattax did a great job explaining the alternator / VR changes

Identifying Chrysler Alternators (1960-1976)

 

[CRUZE 418]

The pain from Painless wiring.