aeromotive 340 dead after 9mth e85
11-24-2012, 11:42 PM
#1
TECH Enthusiast
Thread Starter
aeromotive 340 dead after 9mth e85 my relatively new (jan/feb) aeromotive 340 intank fuel pump died yday, just cruising home (convenietly in the middle of crossing a busy 6 lane road, also nice $100 tow truck albeit 3 km from home). i run e85 and probably done 2-3k kms in that time. the sock filter looked relatively clean and i changed the fuel filter ages ago when i switched. checked the connections in case my handy work had failed but all good. tried giving it a tap against the bench but still no good.
i ran a new filter and also a fine filter sock, with the mesh behind it. not convinced its e85, or sitting still as its done 2k since back from holidays. could be dud internal wiring.
just had a play with some power feed straight to the pump. i don't get anything if i go the main plug terminals. i get a low speed noise if i go the small dimple feeds, NO fluid movement, even if i change polarity. i get a high speed noise if i go negative on the dimple and positive on the main pin, NO fluid movement. so somethings up.
i ran a new filter and also a fine filter sock, with the mesh behind it. not convinced its e85, or sitting still as its done 2k since back from holidays. could be dud internal wiring.
just had a play with some power feed straight to the pump. i don't get anything if i go the main plug terminals. i get a low speed noise if i go the small dimple feeds, NO fluid movement, even if i change polarity. i get a high speed noise if i go negative on the dimple and positive on the main pin, NO fluid movement. so somethings up.
12-09-2012, 01:40 PM
#6
Staging Lane
Join Date: Feb 2011
Location: Detroit, MI
Posts: 95
Likes: 0
Received 0 Likes
on
0 Posts
I've covered this topic quite a bit on this forum over the last couple years. Basically the electrical connections aren't sealed and the pump includes copper, brass and other metals that are susceptible to corrosion when used in high alcohol fuels that attract water. It simply does not include the typical upgrades evident on OEM flex fuel pumps used in current/past OEM flex fuel/E85 vehicles. You can use it at your own risk, it may last 1-2 years for some, a couple months for others, it depends on a lot of variables; temps, humidity, pump submerged or not, % of ethanol content, how often you drive the car.
Good luck! 
