Re: Voltage limiter is acting weird.
[Re: topside]
#2695579
09/08/19 09:21 PM
09/08/19 09:21 PM
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Joined: Dec 2012
Posts: 1,823
Wind Gap,Pa.
Sammy
OP
top fuel
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OP
top fuel
Joined: Dec 2012
Posts: 1,823
Wind Gap,Pa.
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Voltage limiter reduces voltage to the gauges down to 5V.
12V will fry the gauges.
Never had one go intermittent, last time one failed on me was many years ago.
Only the one problem out of 20-some old Mopars I've had over 40 years.
I'd suspect a poor ground or some loose connections from your description.
Where would I find the ground to the limiter?
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Re: Voltage limiter is acting weird.
[Re: Sammy]
#2695589
09/08/19 09:40 PM
09/08/19 09:40 PM
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Joined: Jan 2003
Posts: 10,534
Freeport IL USA
poorboy
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 10,534
Freeport IL USA
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Voltage limiter reduces voltage to the gauges down to 5V.
12V will fry the gauges.
Never had one go intermittent, last time one failed on me was many years ago.
Only the one problem out of 20-some old Mopars I've had over 40 years.
I'd suspect a poor ground or some loose connections from your description.
Where would I find the ground to the limiter? A bad ground would likely be the dash ground, the limiter grounds through the dash ground. Could make the dash lights (and turn indicators) do strange things as well. The 1st think I think about with the nearly any old Mopar electrical issue is a ground issue. Fixing grounds solves a lot of their electrical problems. Gene
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Re: Voltage limiter is acting weird.
[Re: PhillyRag]
#2695660
09/09/19 07:44 AM
09/09/19 07:44 AM
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Joined: Dec 2012
Posts: 1,823
Wind Gap,Pa.
Sammy
OP
top fuel
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OP
top fuel
Joined: Dec 2012
Posts: 1,823
Wind Gap,Pa.
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The limiter supplies power to all 3 gauges. If ONLY the fuel gauge spiked, points to fuel sender unit as suspect. If ONLY the limiter wer acting up; you see weird flucuation on ALL 3 gauges. Oil pressure was going up and down and now shows no activity. Fuel goes normal and now keeps fluctuating. Sometimes on and sometimes nothing.
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Re: Voltage limiter is acting weird.
[Re: Sammy]
#2695675
09/09/19 09:01 AM
09/09/19 09:01 AM
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Joined: Jan 2006
Posts: 3,535
Canuckville
68Cbarge
master
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master
Joined: Jan 2006
Posts: 3,535
Canuckville
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Replace the voltage limiter. I strongly suggest getting an electronic replacement and be done with it.
RTE sells electronic limiters on Ebay.
Also MR.Heaterbox builds and sells electronic limiters..
Just to be absolute sure...with a test light and the key on ACC or RUN,pull the wire from the sending unit,ground your test light and poke the plug for the sending unit. It should be dim and pulse on/off. If that does not happen the limitier is fried.
You can test the wire for the oil pressure and temperature gauges same way but with the key on run only.
Hope this helps,good luck.
'68 Newport Custom Barge on a Budget!! BOAB
1973 Satellite WAGON! 318- 3 on the tree!!
2008 Chrysler 300c HEMI!
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Re: Voltage limiter is acting weird.
[Re: 68Cbarge]
#2695679
09/09/19 09:15 AM
09/09/19 09:15 AM
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Joined: Dec 2012
Posts: 1,823
Wind Gap,Pa.
Sammy
OP
top fuel
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OP
top fuel
Joined: Dec 2012
Posts: 1,823
Wind Gap,Pa.
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Replace the voltage limiter. I strongly suggest getting an electronic replacement and be done with it.
RTE sells electronic limiters on Ebay.
Also MR.Heaterbox builds and sells electronic limiters..
Just to be absolute sure...with a test light and the key on ACC or RUN,pull the wire from the sending unit,ground your test light and poke the plug for the sending unit. It should be dim and pulse on/off. If that does not happen the limitier is fried.
You can test the wire for the oil pressure and temperature gauges same way but with the key on run only.
Hope this helps,good luck.
Thanks this is what I'm looking for. I was going over an old invoice when I bought the car and had it at a very reputable electrical shop and they did fix all the grounds and determined there was an issue. They did fix it but now the problem reappeared.
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Re: Voltage limiter is acting weird.
[Re: 68Cbarge]
#2695739
09/09/19 11:17 AM
09/09/19 11:17 AM
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Joined: Nov 2003
Posts: 36,040
Lincoln Nebraska
RapidRobert
Circle Track
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Circle Track
Joined: Nov 2003
Posts: 36,040
Lincoln Nebraska
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Replace the voltage limiter. I strongly suggest getting an electronic replacement and be done with it.
RTE sells electronic limiters on Ebay.
Also MR.Heaterbox builds and sells electronic limiters.. This, tho if one gauge works & the other doesn't it would point to as mentioned an intermittent ground or an intermittent open but for sure get an electronic version rather than the OE electromechanical type which will wreak havoc if it ever full fields.
live every 24 hour block of time like it's your last day on earth
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