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new gauges not reading right. up and down

Started by 69dodge383, September 11, 2013, 04:06:22 PM

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69dodge383

September 11, 2013, 04:06:22 PM
Installed new digital gauges from summit. Gauges come on and work like they are supposed to but when I turn the engine on and the gauges start doing their thing. The numbers keep fluctuating up and down. I only let my car run for 30 sec and then switched offf. I have all my wires wired correct. I just don't get why the gauges don't settle in
The way I bought it
1969 Dodge Charger SE
383 Magnum
727
3.23 open 8 3/4 - 489
PS/MB

The way it is
1969 Dodge Charger "The Duke"
440HP '72
10.5:1 Mopar Pistons @.030 (446 c.i.)
Edelbrock Performer Heads
Hughes Solid Lifter Cam 278/283 245/250 .597. 613 108
7Qt Oil Pan
Victor Intake
Demon 850 Carb
TTI Headers 2" Primaries
727 Manual Valve Body
9" Dynamic Converter
4.10 Sure Grip 8 3/4 - 489
3" Dual Super 44
Coys 18x9 20x10.5  Cragar 15x8 15x10

Just 6T9 CHGR

#1
September 11, 2013, 04:42:36 PM
Settle into what?  What gauges did you get?   Oil PSI, water temp,volts?  Will all fluctuate with engine rpm/temperature.   

The only one that might remain "fixed" would be the fuel level gauge....  unless you hit the gas pedal of course ;)
Chris' '69 Charger R/T

myk

#2
September 11, 2013, 08:50:05 PM
Wait...you only run your car for 30 seconds?  Digital gauges tend to do that as the car starts itself and the electronics "wake up;"  modern cars with digital gauges do this routinely.  Try running your car for more than 30 seconds and see what happens...
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