my car is going to be tuned with e85 so before we started the car we syphoned out all the 93 pump that was in there and i added 10 gal of e85.

the car fired up just fine and base map was set but i noticed my fuel sending unit was dead and the needle is way way underneath the E mark. i pulled out the pump and hanger and tested sending unit by grounding one of the wires and it slowly went up to full. so i know my gauge in my cluster works.

i was out with some friends today and my friend converted to e85 on his honda (cant remember what car it was) and it killed his fuel sending unit. i did a search and noticed this is a common thing when changing to e85 on different makes.

is this a problem on the fd as well or did my sending unit just happen to die at the same time? i dont wanna spend money on a new one and just have the e85 kill within a day or 2.

 

I have had zero issues with mine, been on e85 for a couple of years now.

 

Strange. Im on my second sending unit since running on E85 and its just started to fail. I havent pulled it out yet to test it.

 

ryan or neutron, were the sending units you guys have/had bought brand new? my FD only has 46k miles on it. the gauge was working fine a few months prior to me doing the engine work. and now it doesnt. i did change the fuel pump but i was careful with everything.

i really want a working fuel gauge. running on e85 gets worse gas mileage and i dont wanna drive around guessing how much gas i have or topping it off every time i drive it

 

The current one was purchesed brand new from Mazda Trixs.

 

Mine is the factory unit with 42k on it.