1991 Mitsubishi Mighty Max 2.4L base unit. VIN JA7FL24W7NP004263
The engine seems to bog down like its out of fuel. I have replaced the fuel pump, gas regulator, repaired the crappy job done on the ecu and replaced other components due to stress.
I don't have a computer, but if I did, wouldn't have an idea where to hook up, nothing is by the fuse panel, and on the passenger kick panel was the ecu and fuel injection relay. I am getting pressure from the pump, I removed the return from the pressure regulator and it was coming out of the point on the engine. I had a very hard time with the nuts and bolts due to age and couldn't replace the fuel filter because I didn't want to cause damage, and I was getting fuel on the output of the regulator.
The pump really needed to be replaced, the filter just fell apart when removing the pump, the tank was full of rust, I did mess up the fuel level sending unit, but it wasn't like it really worked before, but is still attached.
If you can tell me where to find the computer interface, I have read about how to test with analog meter. Have many years in electronics so that should be pretty easy, directions seem very straight forward. Guess this is another instance that a digital doesn't have a fast enough reaction time to be used, I do love my old faithful meter. Also can't use a digital meter when troubleshooting a radar unit because of the reason above, and I learned this the hard way many years ago.
I have read where this could be the coolant sensor or the O2 sensor.
Thank you very much, if you require additional information let me know.
Monday, March 18th, 2013 AT 10:18 PM