Inconsistent ohm readings and new coil prompts

[Amaksoud]

Hello,

around a month ago I started to have ohm readings issues with my Siren 2 tank that developed shortly to dry hits. I decided to get a new one after trying the old tank on my 2 mods.
I got a brand new Expromizer v4 and it worked fine until a few days ago where it started giving me the new coil prompt every few puffs. I tried changing the coil myself and at 2 vape stores with no luck. I also tried it on my other mod and it still does it.

with every new coil prompt, if I click yes, it usually shows higher ohm readings than it should be (2.0 or sometimes may be 2.4 instead of 1.5)

I’m not sure what to do next to trouble shoot the issue further. Any help would be appreciated.

 

[stols001]

Same mod on both attys? Look at the mod for issues if you ask me because it sounds like very similar behavior.

Could be an issue with the guts, with the 510 pin IDK you could try cleaning both connections thoroughly and see if it gets you anywhere. Good luck,

Anna

 

[DaveOno]

Hi.
Make sure things that should be dry are dry. Like the 510 threads and pin.
And clean. Current flows through the threads and the center pin. They must be clean. And the insulator (between the center pin and the threads) must be clean, so it can, er..., insulate.
And from my experience, anything screwed together in the vape world should be at the most, finger tight. There are many gaskets and insulators that will deform or crush if over-tightened, and will no longer serve their function. (the exception to finger tight is for screws holding coil wire ends. These can be tighter)
So, the electric current flows through the circuit, from mod center positive, to the coil, then leaving the coil to the tank body to the threads to the mod negative. If any connection is not sound, all bets are off.
Hope somehow this helps.

Best of luck.

 

[HigherStateD]

If I'm reading correctly, the first tank had the issue on two different mods? And the second one developed the issue after a few months? Sorry, I can't think of the issue of hand if this is the case, as I've only experienced this issue with loose posts holding my coil. Couldn't imagine what could cause this on two tanks on two different mods with drop in coils. Just want to make sure I got the story right before suggesting an answer.

 

[Amaksoud]

If I'm reading correctly, the first tank had the issue on two different mods? And the second one developed the issue after a few months? Sorry, I can't think of the issue of hand if this is the case, as I've only experienced this issue with loose posts holding my coil. Couldn't imagine what could cause this on two tanks on two different mods with drop in coils. Just want to make sure I got the story right before suggesting an answer.

Hello, yes you got it right.

siren 2 on my old mod, so i got a new mod and it happened again with the siren 2 and new mod.

got a new tank, happened also with both mods.

 

[HigherStateD]

Hello, yes you got it right.

siren 2 on my old mod, so i got a new mod and it happened again with the siren 2 and new mod.

got a new tank, happened also with both mods.

These aren't rebuildables? Drop in coils? Do the mods have a coil lock feature? Not a great solution, but it's worked for me when I limped a coil that was breaking until I could fix it... Hopefully someone comes along with a better solution.

ETA: Do you know what metal alloy the coil is made from?some drop in coils are temp control comparable, so if it's one of these, the resistance will change, so locking it is the right thing to do...

 

[Mordacai]

@Amaksoud, try completely disassembling your Siren 2. Then clean everything, dry well and reassemble.

As it sounds like an issue with the electrical conductivity.

The Expromizer V4 has an issue with its design that will always cause drastic resistance fluctuations, the positive 510 screw uses rubber insulators that allow it to move slightly. It's a shame as it's a good RTA, but flawed in its execution.

 

[Hawise]

There might be an issue with the way you're building your coils since it's happening with both tanks. On the other hand, it could be that the Expromizer is just built that way, as @Mordacai suggested, and something's happened with the
Siren.

The first thing to do is to make sure your coils are connected well and the legs aren't sticking out. If the coils are good, start looking at the RTAs. In particular, check the screw in the 510 connection (lousy picture below). It should be finger-tight - not as tight as you can make it, but definitely not loose either. That screw got loose on my Siren 2 at one point, and it'll really mess up your resistance readings.

 

[Mordacai]

@Hawise, I always was getting resitance changes with the Expromiser V4 due to those rubber insulators. Not good when trying to use TC mode.

But a good clean and reassemble of the Siren 2 should yeild positve results.

 

[Amaksoud]

Thank you guys for the great help.
It turned out to be the screw in the 510 connector, once tightened, it’s working fine now for the past 48 hours.