Voltage Limiter

[Jerry Hall]

I have been restoring various Mopars since 1990, and drove them when new. I have upgraded several clusters to solid state voltage limiter and they actually make the gauges a little more accurate. Today I replaced a voltage limiter because it was bad. That's a first for me. Just wondering how many out there have had actual bad stock voltage limiters?

 

[AR67GTX]

Jerry, my 66 seemed to have a bad one in that after starting the engine the instruments would read fine at first. But after about 5-10 minutes the temp and gas gauge would go full scale and stay there. I installed one of the new electronic ones from rt-eng and it’s been working fine.

 

[Jerry Hall]

This was on a survivor 67 R/T. 24K miles. I kept it original, so I used another limiter from a parts cluster.

 

[T Brashears]

I worked on a fleet of cabs in the late 70s,would replace one occasionally. Those cars got almost 100 k a year on them. I’ve had an electronic one in my 65 since I put it back together,but only about 2k miles on it so far.

 

[twecomm]

Depending on the nature of the failure of a stock mechanical gauge voltage regulator, you can fry all the gauges it feeds voltage to should it fail if the points of it stick together. This would feed full battery volts to the gauges. My mechanical stock gauge limiter when I got my 66 Charger back in 2010 was still working, but I had pulled the gauge cluster to fix EL problems in the gauges. Decided it was a perfect time to install a RT engineering solid state voltage limiter and it's been fine ever since.
RT makes solid state regulator replacements for most Mopars.
RTE limiter - rte

 

[dadsbee]

The one in my HP2 started sticking. I caught the gauges going full sweep a few times and replaced it.

 

[69hemibeep]

It was Sunday and had just won best B-body judged at the old MATS in Vegas. Just a few hundred miles after the restoration I was getting ready to trailer my runner after the event when I turned the key and poof smoke comes out of the dash and I turned the key off. I look up and the old Ramchargers team come walking up to talk and saying how they liked the car but they had to vote for a race car. As they wander off Scott Smith comes up and we shoot the bull for a couple of minutes and in the back of my mind I'm wondering what just happened to my baby. After everyone had cleared I checked things out and turned the key again, no smoke but my gas and temp gauges were history. RTE limiter was ordered along with the repairs.

 

[twecomm]

That's the way it goes. If you haven't upgraded to the RTE solid state regulator in your baby, consider it before you end up toasting your gauges.
The original factory mechanical regulators are just bad news..

 

[Jerry Hall]

That's the way it goes. If you haven't upgraded to the RTE solid state regulator in your baby, consider it before you end up toasting your gauges.
The original factory mechanical regulators are just bad news..

Like I said it's the first one in 57 years that I have seen bad. That's a pretty good track record. I agree that the RTE unit is probably better, but I'm keeping this one original. If I had received 40 or 50 responses saying they go bad all the time, I would order one.

 

[Don Frelier]

The one in my charger died a couple years ago.
It always worked fine but one morning before I noticed it (and I watch my gauges closely).
It blew up the temperature gauge.
I repaired it but it reads low now

 

[sam dupont]

I'm research suggested that this is the same as a Mopar. IH made (or bought) good stuff

International Parts Voltage Regulator 966304 R91 NEW OLD STOCK | eBay

 

[AR67GTX]

For the money, the RTE regulator is worth it. It has some additional protection features for controlling voltage spikes, grounding loss, etc. Easy reference comparison from their website.

 

[LSS&B]

Jerry, my 66 seemed to have a bad one in that after starting the engine the instruments would read fine at first. But after about 5-10 minutes the temp and gas gauge would go full scale and stay there. I installed one of the new electronic ones from rt-eng and it’s been working fine.

Hi, did you use IVR4? Thanks
IVR4 Limiter List - rte