I have a Mitsubishi Galant 91 that has a problem starting when the
engine is cold.  I start the car and the engine dies if I don’t keep
putting pressure on the gas.  After the car is warmed up it run’s
fine.  Another method is to keep pumping the gas and a big pump on the
accelerator when I put the car in reverse to pull out of my driveway.
The engine will not shut off this way but shakes until it is warm.  I
have gotten a diagnostic on the car but they said my car is too old
for their machines.  A few places have said it is a sensor but don’t
know which one it is.  This is also the reason my Check Engine light
is on.  I have a friend who can fix the problem but does not know
which sensor to replace or fix.  Can anybody help?