I have been trying to verify my alky kit is working....I have been searching the board here intensely and still can't find exactly what I need to know.

FIRST OFF.... I have a blue LED, not a red/green. I am not sure if the kit came like this or the original installer put it in but, I have no color changing or anything at any time. So any of the tests that include a color change will not work for me.


ENGINE OFF/IGNITION ON

*I hit the TEST button, the blue LED comes on. I can hear a slight humming down at the pump, more like a high pitched tone. NO METH SPRAYS OUT, pump is definitely NOT running but the humming sound is coming from the pump, almost like its not getting ENOUGH power to run but its getting some.

*I can hook 12v power up to the pump harness directly and the pump instantly starts blasting METH, the pump runs very quietly and is very responsive, barely gets warm after running an entire reservoir dry.... this pump is very healthy. So THE PUMP IS GOOD.

I flushed about 2 gals through the pump, I also removed the nozzle and ran the pump some more to check the nozzle spray pattern.....it sprays clean, strong and very "foggy".

How the hell do I test this system and physically see the meth spraying out of the nozzle? (without running power to the pump directly)

When driving, the LED light comes on any time I go half throttle or more and well before it starts to make boost, so if the pump IS actually spraying, its coming on WAY too early so I will need to tune that some but..... I need to make sure the pump is spraying when I am actually driving.

I tried to call the guys from Alky Control about 3 times last week and could never get anyone on the line so..... I am coming to the pros here....


Thanks in advance for any help!

 

Before you start tearing into things, start the car and while it's idling, press and hold the test button. If it affects the idle at all, that part is working. The test button isn't supposed to run the pump *****-out.

If you find it's not affecting your idle, there is a module under the dash that takes in 12v and Ground and supplies 5v to the MAP sensor. Make sure you have 12 and ground going in and 5v going to the MAP sensor and a vacuum/boost signal going to it.
Some parts store rent Mityvac's, a handheld pressure and vacuum pump. The top of the tool supplies pressure. You can remove the nozzle and insert it into a jar and with the key on, connect the vacuum line that goes to the MAP sensor to the top of the Mityvac. Pump it a couple of times and the pressure will progressively build. As it builds, the pump should run harder.
The blue LED is either from an old kit or came from somewhere else. You can upgrade to the dual color LED, but it will require a new controller IIRC.

 

Thanks for the info!

I did try the TEST button while the car was idling and it made no difference in idle quality....I even held it down for about 10 secs once to see if it would load the engine up and it made no noticeable difference.

I also unplugged the pump, I had my GF hold the test button down while I measured voltage at the harness side plug down at the pump and with the button depressed it would give 12.5v (engine off) at the red wire. That would tell me I "should" be getting 12v to the pump when the test button is pressed but I guess there is another interlock built in.

I did see the map sensor/box with he vacuum hose on it. It's mounted down in the fenderwell with the pump. I didn't measure the voltage in or out on that one. I did check the vacuum hose and it's tie wrapped tight both on the map and at the T.

I do have a mity vac pump but I don't believe mine does pressure, only vacuum I think. I will have to look at it again.

Also I never messed with any adjustments on the PAC or the other box the map is mounted to. The gain on the PAC is at 2.5 or so. With the gain that low, could that be why I am not getting a good shot of meth when hitting the test button at idle?

 

The best way is to pressurise the MAP sensor as Bret suggested. You can have a pump make noise but have a bad diaphragm and not pump. If you need a pump let us know and we'll get one out to you.

 

Thanks...

My pump seems to pump VERY WELL when I hook 12v directly to it.... However it does NOT pump out any meth when using the TEST button. That is what I am trying to figure out why.

I will try introducing some air to the map sensor and see if pump sprays. I still think there may be something else going on though... It seems like the electronics are working as they should be when the car is running, I just can't verify its spraying.

 

If the meth is set very low, it will not actually pump when the test button is hit.

 

Thanks Doug!

I actually just talked to a fella at Alky Control and he told me the testing procedures I need to follow to diagnose it. He also mentioned about the gain **** being turned down too far not allowing the pump to spray during the test. We also figured out that my turn on adjustment is set wrong and the meth is spraying under vacuum.

Basically when MTI (houston) installed this kit, they set the whole thing up wrong....

I'm going to get it straightened out and order the correct color LED light from Alky control so I can keep my eye on line pressure changes etc.

 

I think I have got my issues resolved. First, the faulty test procedure was due to the gain being turned down to "3". Once I put it at 8 and hit the test button, the car bogged at idle so I KNEW it was spraying then.

Second, when MTI installed it, they had the turn on and initial both at "10 oclock"....thus making the system start spraying at high vacuum situations.... I adjusted both back to 12 oclock and now my led lights up at around 3 psi or so. I still dont have the correct green/red LED light yet, I've got to order that still but I'm confident the kit is working now....

Now I just need to get my boost a pump issue resolved then its time to go to the dyno for a check up. I should have the AEM wideband installed in the next couple weeks to keep tabs on all this stuff...Then hopefully I'm done for a while.

 

Good to hear it was a simple fix more or less. Good luck with it.