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Max Truck
Mitsubishi Mighty Max Truck
Repair Questions and Answers
Question: 1994 Mitsubishi Mighty Max
mileage: 144,000. My truck will not start because I'm not
getting any spark from the coil. I used a screw driver
(inserted into the spark plug wire) to verify that I had
no spark from the distributor. On the advice of a
friend, I changed my distributor. This was no help. I
then changed the coil assembly (the coil and the power
"igniter"). No help. I put an analog meter on the coil
and cranked the car but there was no deflection of the
meter. It read a constant 12 volts dc on both terminals.
Being an electronics technician, I pulled the ECM
(computer) from under the dash. There appears no be no
burn components inside but that doesn't mean its is not
bad. I verified that the engine switch was working. I
know that the truck desperately needs an O2 sensor to
pass smog but will this cause the engine not to run? Is
there anything else in the circuit that I'm missing? Do
you know if and where this computer can be tested and or
repaired (if bad). Do you know where the test connector
to read the codes is located? One part of my Hayes
manual says its is behind the fuse panel and another
part says it is behind the radio. Please help. I really
don't want to spend the money on a computer until I am
positive it is the problem. One more question. If the
distributor is not installed exactly in the same spot
will this cause no spark? Or, will this just cause the
engine to run rough. I also made sure piston #1 was top
dead center (tdc) upon installation. I was not sure
which was the compression stroke and which was the
exhaust stroke so I tried the distributor both ways. The
truck would not start either way. Thank you for your
time and effort.
Answer: Check to make sure that the timing belt
has not failed causing the camshaft not to rotate with
the engine when cranking. We would bet this is your
problem. However, if it is not, it is possible that a
bad sensor could be keeping your car from starting. Test
them by unplugging them one at a time, testing to see if
your car will start each time.
Question:
1994 Mitsubishi Mighty Max mileage: 70,000.
I was changing a tire and the truck fell off the jack
stand. The jack stand remained upright but when I
lifted the truck up the stand had bent a swing arm on
the transmission that operated the gearshift. I
straightened the arm but now the truck will not start.
There is power to all systems but not the engine.
Answer:
Check the neutral safety switch, it may have gotten out
of adjustment due to the bent shift linkage.
Question:
1993 Mitsubishi Mighty Max pickup mileage:
144,000. I need to change the fuel filter in
my pickup, but I can’t seem to find it, can you please
tell me if it is hidden somewhere or am I just blind?
Thank you
Answer:
Your fuel filter should be on top of the fuel tank by
the frame.
Question:
1992 Mitsubishi Mighty Max l mileage: 50,102. When
my truck hit 50,000 miles, the "maintreqrd" light came
on. The manual says to check the emissions (i.e.
timing belt) and I can do those things myself, but how
do I turn that silly light on my dashboard off?
It really is annoying and I don't want to pay the dealer
to do it. Thanks
Answer: The light can be reset by
removing the cover over the gauges and moving the switch
located at the lower right of the gauges.
Question: 1994 Mitsubishi Mighty Max
mileage: 120,000. What would keep my truck from cranking?
It is getting fire, and gas to the motor. I have
replaced the ignition switch, wires, plugs, rotor, cap,
fuel filter, checked fuel pump, and it is working, new
battery, checked the timing,
Answer: Your car is equipped with a computer
controlled engine management system. An independent auto
service center can scan your computer for fault or error
codes. The information should pinpoint the mal
functioning components.
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/ Mitsubishi
/ Mighty
Max Truck
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