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Re: 1972 Roadrunner Temp Gauge Not Working
[Re: jim6346]
#2476906
04/03/18 06:02 PM
04/03/18 06:02 PM
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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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If you can crawl under the dash,check to make sure the black wire from the voltage limiter going to the temp guage is plugged in. If it is plugged in,pull it and with a multi meter with engine warmed up,and key "on" but not running see iff there is 5 volts pulsing from the black wire. From there plug the wire back in.under the hood check for juice going to sender. should be pulsing up & down 5 volts. Check that wire all the way to the bulkhead for any damage. If you have juice going to both the sender and gauge but no reading replace gauge. I am assuming the other guages (fuel,oil) are working since they share the same feed from the voltage limiter. Hope this helps
Last edited by 68Cbarge; 04/03/18 06:06 PM.
'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: 1972 Roadrunner Temp Gauge Not Working
[Re: jim6346]
#2476909
04/03/18 06:05 PM
04/03/18 06:05 PM
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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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BTW, I learned that using plumbers tape on the sender can cause an open curcuit (no ground). Engine is ground.
'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: 1972 Roadrunner Temp Gauge Not Working
[Re: jim6346]
#2476938
04/03/18 06:58 PM
04/03/18 06:58 PM
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Joined: Mar 2003
Posts: 559 Newark Valley, NY
jim6346
OP
mopar
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OP
mopar
Joined: Mar 2003
Posts: 559
Newark Valley, NY
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Thanks 68Cbarge, Yes, all other gauges are working. I will check for the pulsing 5V tomorrow at the sender, then work my way back from there Thanks again!! Jim
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Re: 1972 Roadrunner Temp Gauge Not Working
[Re: calrobb2000]
#2477227
04/04/18 03:20 AM
04/04/18 03:20 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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Pull the wire/terminal off of the top of the sender terminal & ohm the sender metal body (not the terminal at the top) to the nearby block to see if there is continuity or plug the wire/terminal back on & hold a jumper wire from the block to the body, which is the same deal & see if the gauge straightens out then I would pull the wire/connector back off of the sender & ohm the sender terminal at the top to the block with eng cold & again with it warmed up & see what ohms you get. always a good idea to pull a batt cable before switching the meter to ohms or at least confirm that what you are testing is isolated/unplugged from voltage/battery.
live every 24 hour block of time like it's your last day on earth
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