I got one of these pumps a couple of years ago and all has been going good with it. I had an 1 in a 100 slow starts with the pump but it always cleared itself. Finally the slow start didn't go away and now it is bowing fuses.

I took the pump apart and found the permanent magnets have unglued themselves. The glue that holds the magnets to the case of the motor has broken down. I emailed Aeromotive about this problem and they blame the new refinement of pump gas saying that alcohol is the culprit. Ethanol has been in gas for over decades. But for $100, they can fix the pump for me (plus shipping on my dime).

So to fix the pump, all I need to do is reglue the magnets to the case. My first thought is JBweld or some other epoxy. Does anyone else have a suggesting for reattaching the magnets?

Thanks

 

any fuel safe non magnetic epoxy should work.

 

Has there been any armature interference and contact? If not, or minimal, you may be able to repair it.

Mark the position and orientation of the magnets carefully. You need to install them in the proper position and orientation for correct operation.

If they are rare earth magnets, you need to insert a keeper if the armature is to be removed for any length of time, or if the magnets themselves will be removed for repair of the unit, elsewise the magnets will quickly lose power. Many an otherwise good servomotor has been destroyed in that manner.

You need to completely clean the interior of the frame and outer surfaces of the magnets (the bonding surfaces). Find an epoxy with high shear and tensile strength. A slow curing epoxy is likely going to have these properties. Do not heat the epoxy to accelerate the cure, since heating the magnets will further weaken them. You will have to wedge the magnets into position during cure to assure that they do not pull inward.

If you are unsure of what you can do, talk to a technician at an electric motor repair shop in your area. They can likely offer some insight, and may be able to recommend an adhesive and some other tips.

And remind me to never purchase an Aeromotive pump. Their warranty service seems to suck raw eggs.

 

I've got two of those pumps sitting on a shelf in the garage, junk.

I ended up installing a $108 Walbro in-tank 4 years ago and havn't looked back since. Those aeromotive pumps didn't last 6 months.

 

Oh. I wasn't aware that there were routine problems with Aeromotive pumps. Anyone else have similar results?

 

i have a friend with a GN that had one die... but i figured it was a isolated thing.. *shrug*

 

Did I also mention how loud they are? I heard it over my 1 3/4" SLP headers with 3" Hooker cat back. Engine is a 383 stroker too.

I myself would stay far away from in-line pumps. Sure they're easy to change but cost more initally and in the long run.

 

Thanks for the input. I did everything you mentioned, but before I read your post. I carefully used vise-grips to hold the magnets in place. I'm doing some pics of my repair and intend to get the info on the net. Then email Aeromotive about my fix after I thoroughly test out the repair.

This is the first time I have heard anything bad about these pumps.

John Millican - Areomotive pumps are not loud. Try listening to a Holley blue pump. They can be heard over open headers. LOL