AIRDOG 2 NO LONGER!!

[strokinpower]

So if I dont plan on doing any further mods to my truck there is no point in paying extra for the adjustability of the AD2 when a AD150 would work fine? Sorry to derail

[PGreenSVT]

Originally Posted by Karls03

Aeromotive*|*16306 - Billet Fuel Pump Speed Controller

It says in big bold print NOT to drop the voltage to the pump to slow it down because it will smoke the pump. I wonder if this is why the AD2 pumps are failing.

BTW, since I'm learning this as I go, what would happen if the Aeromotive 1000 (or similar pump) were installed without this box? I realize this works like a dimmer switch on a light bulb, but would there be catastrophic results if it weren't used? Isn't the purpose of a bypass regulator to return excess fuel and pressure back to the tank?

After listening to my Holley Blue groan over the years in my '67 Mustang, this electronic piece sounds pretty good for a dead head system, but we use a return system.

Karl, the Aeromotive controller doesn't work like a dimmer switch. The dimmer switch does increase resistance thereby lowering voltage and the light dims. The Aeromotive controller works on pulse width modulation. It continues to supply full voltage when allowing the voltage to pass. So it is voltage on, voltage off, voltage on, etc. The length of the off pulse determines the speed of the pump.

The Fuelab is a two speed and has a post to monitor the desired speed. If that post is taken to grnd it runs at reduced speed. If it see's more than 5v on that post it kicks it to high speed. That is why I intend to use the output from the throttle position sensor to trigger the pump speed.

[windrunner408]

Originally Posted by JUGERNAUT

My question is this would a airdog 2 benefit from a low pressure high volume feeding it? Or is this issue a inferior part in the airdog 2 causing problems!

From what I have gathered Dale, the Airdog 2 is just a sh!tty pump design. Folks have tried improving the suction side supply with sumps and this pump is "suppose" to be able to pull/lift fuel out of the tank with no other pump being necessary to supply it fuel OR have its suction lower than the bottom edge of the tank and yet it still fails.

Pumps like the Fuelab and A1000 do not suck fuel on their own. They require either a lift pump or be mounted lower than the bottom edge of the fuel tank. Now there are quite a few guys out there who run a sump feeding a stand alone A1000 or Fuelab just fine and seem to have it hold up just fine, but just know that the factory recommends that they have either a lift pump or be mounted lower than the bottom of the tank and use a sump.

[Karls03]

Ok, dimmer switch was bad analogy. The Aeromotive page was pretty straight forward about keeping 12V to the pump. Hence the question of whether this would hepl the failure prone AD2 pump.

However, would it hurt an A1000 pump if it were run in a return system WITHOUT this piece? Isn't that the purpose of the of a return system?

Again, I'm not too hot on electrical stuff.

sent from a dumb guy with a smart phone

[stroke of luck]

all of a sudden my dinosaur FASS unit doesn't sound so bad....

[04hdfatboy]

Originally Posted by strokinpower

So if I dont plan on doing any further mods to my truck there is no point in paying extra for the adjustability of the AD2 when a AD150 would work fine? Sorry to derail

Probably not. 150 should work fine.

[Eric@PTP]

Originally Posted by 04hdfatboy

Do you think it will be better quality?

Haven't had the chance to test one yet but its not a gerotor pump and its also brushless so in theory yes, its also a flow though pump that uses the fuel to cool it.

[pizza pig]

Originally Posted by windrunner408

From what I have gathered Dale, the Airdog 2 is just a sh!tty pump design. Folks have tried improving the suction side supply with sumps and this pump is "suppose" to be able to pull/lift fuel out of the tank with no other pump being necessary to supply it fuel OR have its suction lower than the bottom edge of the tank and yet it still fails.

Pumps like the Fuelab and A1000 do not suck fuel on their own. They require either a lift pump or be mounted lower than the bottom edge of the fuel tank. Now there are quite a few guys out there who run a sump feeding a stand alone A1000 or Fuelab just fine and seem to have it hold up just fine, but just know that the factory recommends that they have either a lift pump or be mounted lower than the bottom of the tank and use a sump.

They are designed to pull fuel at a specific pressure, its not very much though which is why they're best used with a sump. There is absolutely no need to run a pusher pump with these, either company will tell you just that on the phone. Does it hurt to run one, no wasy it does not.

An aeromotive or fuelab pump NEEDS a regulator, you will burn the pump up running out full speed/duty cycle of the pump without a regulator. It will fry the pump in a very short amount of time.

[Fox Hunt]

Originally Posted by cam1111

My 165 failed recently. We had run a very nice 10ga wiring loom to it, and checked voltage drop at less than .5v. It's what I do for a living, automotive electronics, so I am sure there was no lack of voltage to the motor. Not sumped all it's life, but for the last month or so. This pump motor has about 7k miles on it. Note how one of the brushes is worn almost completely away, then cut thru the brush lead and failed.

To Pureflows' credit, although they weren't very friendly on the phone, they let me send in a proof of purchase (I hadn't filled out registration card) and they sent me a new pump assy with no questions asked. They tech on the phone (Josh maybe?) would not really admit to a problem with their motors, but did state that I would not have a problem with the new one.

So far it is much quieter with the new motor. I am gathering the parts to run a bosch pump from an obs truck as my high pressure pump though, and use the 165 as a low press pump.

What are the brushes doing in these pumps and where ate they in the pic? Not an electrical expert and trying to learn about these pumps

[scparrish]

I'm in the process of trying to decide between the fuelab and the aeromotive