Dakota Digital questions?

First off, My setup has two 3 gallon tanks and 2 compressors on manual switches. The reason why I went this route, cus I wanted to conceal my tanks and compressors in the spare tire well. And I didnt have the $$$$ for the electric setup. 
 
I have the Dakota Digital guage and sensors installed in my car. I have had my setup for a yr now. I just recently noticed a few months ago, that my front left bag reads 3-6psi, when fully deflated. My other 3 bags reads 0, when fully deflated. I have to add that extra 3-6psi to my front left, for my ride height. Has anyone else have had this problem and what was the fix?
 
My compressors turns off at 75psi. But the tank PSI doesnt read 75, but 74psi. Is this common? Also, I notice that a lot of you guys are running your tanks at 150psi. Is there a way to change my tank max PSI pressure from 75psi to 150psi? 
 
 
 
 
Thanks

Not sure about the extra pressure in the front left bag, other than a possible bad sensor/wiring.
 
For the tank, if you change the pressure switch to one with a higher range, it will let your compressors keep filling the tank till you get to 150psi... But that depends on whether your comressors can handle that pressure, and whether your air lines etc are all rated for the extra pressure.
 
Just a question, can you show me how your pressure sensors are plumbed into your system?

the reason for guage showing 74psi instead of 75 in the tank is because the compressor turns off and on based on the input from the pressure switch and the dakota digital guage uses a seperate pressure sensor sending unit, since they are 2 seperate sensors they can give different reading possibly due to their calibration or tolerance.

one left front probably got a small kink right at the fitting at the sender.

two it is normal that is off by 1 psi. 

but you probably didn't program the digital gauge to the correct psi senders...airrunners usually don't top off at 75...usually around 150 to 200 depends on which pressure switch you have

i dont even look at mine. its not accurate enough for me to trust it

Thanks [B]0x21. [/B]That helps a lot :biggthumpup:
 
[QUOTE=Dominik;321157]Not sure about the extra pressure in the front left bag, other than a possible bad sensor/wiring.
 
For the tank, if you change the pressure switch to one with a higher range, it will let your compressors keep filling the tank till you get to 150psi... But that depends on whether your comressors can handle that pressure, and whether your air lines etc are all rated for the extra pressure.
 
Just a question, can you show me how your pressure sensors are plumbed into your system?[/QUOTE]
 
I was thinking it might be a bad sensor. I heard that Dakota is notorious for having issues with there sensors.
 
Which one is considered a pressure switch? 
 
I can show you, once I find my damn camera battery. Its a rechargeable kind :runcoold: 
 
[QUOTE=REV-01;321252]one left front probably got a small kink right at the fitting at the sender.
 
two it is normal that is off by 1 psi. 
 
but you probably didn't program the digital gauge to the correct psi senders...airrunners usually don't top off at 75...usually around 150 to 200 depends on which pressure switch you have[/QUOTE]
 
I was thinking that it could be a kink, but its not. 
How do you program the senders?
 
 
[QUOTE=vip tint+glass;321270]i dont even look at mine. its not accurate enough for me to trust it[/QUOTE]
 
LOL...Couldnt agree with you more. Damn, now they need to make a guage that shows the height of the car, instead of the PSI :giggity:

The pressure switch for the tank would be plumbed directly into the tank, or off a short line to the tank. It is either a small one like this:
[IMG]http://www.airrunnersystems.com/air-suspension/wp-content/uploads/2008/06/2292-2293.jpg[/IMG]
 
Or its a big adjustable one like this:
[img]http://kustomairsuspensions.com/images/AZPS-135-175-2.jpg[/img]
 
I'll PM you about the plumbing question...

edit...

my UAS came with a 200psi switch and hasn't failed.   It reads up to 204-208 before the switch turns off and then the readings drop to 196ish a second after.    I got lazy and didn't let the water out of the tank for a long time.   I finally did it and just turned the knob and was like "oh thats not that much water".  I was wrong.  I picked up the tank and started tilting it side to side as the air was gushing out and damn alot of water was in there.   

HOWEVER I've had 2 of my dakota digital pressure sender read false.   Just a few weeks ago I finally replaced them after talking back and forth with dakota's tech guy.   I did all the test he said to do but everything checked out fine.  I even did a resistance test and it was within range.   I had a problem of it jumping 10-20psi around the 50-100psi range.    After trying and switching around wires I concluded the sensors are definitely bad.   Tested the gauge and wires and everything checked out.   I even tried different grounding areas.    Today I've contacted Dakota and they should be sending me new ones after I send them back the bad.  

What you are saying about 3-6psi at full deflate means its busted.   I bet if you do a resistance ohm test it will be off spec which means you probably will get false readings.   Talk to UAS about it too...they say that sometimes too much moisture can damage the sensor because of rusting issues.   Are your tanks aluminum or steel?

As for the gauge programming... check their website..they have the manuals on there.   On my gauge I think I had to do some grounding procedure with the tank sending input on the gauge itself.   I do remember you have to choose which sensors you have (2 kinds only, I believe 0-150psi 1psi increments or 0-400 which is a 2psi increment resolution).   Then it takes you through the low and max psi warning thing and its set.   Whats cool is it keeps that setup even if you completely take the power off...so it has memory.

ok, well I have to check with AirRunner and see if I can run more psi in my tanks. Im only using 1/4" lines, so I dont want to blow hoses, before I check with them first. My tanks are steel, so there shouldnt be any rust, or should there? 
 
I live in a state where theres a lot of moisture in the air. That could be the reason for my sensors being faulty.
 
I to havent drained my tank in a long time. When I did this last week, only little to no water came out. I guess I will have to do it again and shake the tank back and forth while the compressor is kicked on, so I can get that gushing air sound and help the water out.
 
Thanks for the tips and suggestions.

i don't have any problems with their senders and gauges...i am in hawaii if that make a difference. you can program the gauge using the tank wire..make sure you disconnect the sender side though.

the only problem i see is when you put the airrunner 1/8npt to 1/8 line fitting, because it is so small so they kink right at the end...hope you figure it out.

I was messing around with the hoses and stuff. There are no kinks around any sensors or senders, not even the tank itself. 
 
I dunno what I did, but now the guage is reading 0 on all 4 bags. Hmmm, guess it might be the gauges...I shouldve just stuck with the analog guage that AirRunner offered. All well, live and learn.

thanks everyone for the suggestions. Will keep this updated

try look at the ground at the senders. if it is lose it will not read right.

[QUOTE=REV-01;321943]try look at the ground at the senders. if it is lose it will not read right.[/QUOTE]

+1

the senders work off resistance and a bad ground will do that.