What Triggers Fuel Pump Relay (Fuel Pump Voltage) [Archive] - Mitsubishi Lancer Register Forum

What Triggers Fuel Pump Relay (Fuel Pump Voltage)

Fire_2
14-08-2015, 20:29
After a track day at snetterton my car has decided it wants to run lean

was running fine then about half way in started to misfire, I thought it was plugs or coilpacks then noticed my afr gauge was running around 14 and going very lean under boost.

I'm sure its the fuel pump stuck on low mode?

I've changed the fuel pump and filter

I've tried a new regulator and fuelk return line rather then my aftermarket FPR

bob @ dynotech has tried a new fuel pump relay and I've checked my old one was working

running out of ideas now.

car is pretty much undriveable... any one got any ideas?

Phil2333
14-08-2015, 20:34
Checked injectors?

Fire_2
14-08-2015, 20:40
not yet, do they get blocked?

maybe bob has a spare set I can swap with mine see if it makes any diffrence

Phil2333
15-08-2015, 15:57
not yet, do they get blocked?

maybe bob has a spare set I can swap with mine see if it makes any diffrence


They can get blocked which would affect spray pattern.

Worth a go.

Fire_2
25-08-2015, 14:43
anyone know any one decent in the kent area to take my car to, for someone to have a look?

I've tried the hire wire pump kit and It didn't seem to help

still running very lean on anything over half throttle or boost

maybe ecu?