HELP! mitsubishi magna 1989

Tf magna the door card can be removed

check your fuses and connections. may be loose.

not familiar with your car but one car I had
your had to press unlock, once for drivers door, twice to unlock all the doors.
and one of my bosses old cars, short press, drivers, long press all doors.

Check this diagram...

• bad tire
• warp rim
• alignment

Possibly when the radiator fan kicks on it robs a little power from the engine causing it to shutter a little.When the engine is in park the RPM is higher thus when the fan comes on it doesnt cause much of a load on the engine.Just open the hood as someone starts the car,puts it in park and feel for the fan to come on and see if it's causing the engine to shutter

Hydraulic tappets fitted.Automatic adjustment.
If your engine is tapping then they may need to be replaced.
Hope this helps

i am not positive on the fuel filter location on the forieng cars but thy usually put them in the back by the fuel tank
i hope this helps you in some way.
but yes all cars have fuel filters

usualy tis is caused by the door key cylender sensor switch beeing loose or damage espacilly if you have had a slim or a wire hanger in the door panel trying to unlock the doors if this is the problem it will also over time run your battery down its kinda like your holding the lock button down all the time