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Car Forum / Mitsubishi Cars / September 2005no power to fuel pump..
95 eclips. no power to fuel pump.hot wired fuel pump and it runs good. replaced computor & both relays.what can i check next ? Check the blue female connector at the firewall. It's the fuel pump check and there should be 12v. there when the ingnition is on. Best bet is to bypass the shitty factory wiring and trigger a 40a. relay. OE wiring is way too small, there is a pretty sizable voltage drop in the circuit that results in poor fuel pump performance. http://www.forcedperformance.net/fprk2g_install.aspx If your computer has an E in the part number....it's worth money :) EPROM was used on some of the '95 cars and it's desireable because you can socket the board and swap chips in and out. > 95 eclips. no power to fuel pump.hot wired fuel pump and it runs good. > replaced computor & both relays.what can i check next ? > 95 eclips. no power to fuel pump.hot wired fuel pump and it runs good. > replaced computor & both relays.what can i check next ? Instead of using the shotgun approach and replacing more stuff, get a multimeter and start measuring voltages and continuity. I'd guess that the circuit from the MPI relay to the fuel pump has a problem. The ECU drives the MPI relay that switches power to the fuel pump. Start looking there. Stewart DIBBS www.pixcl.com/lancerproject.htm Stewart, it's really not a shotgun approach at all but in fact one of the most common modifications done to DSM cars. The factory wires are a known problem; if your going to fix it, fix it. With the O.E. wiring, voltage drops from 14.4V to 11.8V. when the fuel pump is under load. Any switched power will suffice for triggering the relay and the result is a higher capacity fuel system. http://www.roadraceengineering.com/fuelpumptechtip.htm >> 95 eclips. no power to fuel pump.hot wired fuel pump and it runs good. >> replaced computor & both relays.what can i check next ? [quoted text clipped - 8 lines] > Stewart DIBBS > www.pixcl.com/lancerproject.htm |
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