Top 20 1993 Plymouth Colt Vista Questions & Answers

check fuse and relay if good than pull up switch and check for power to switch also check the wire harness between door by hinge where it enters door for damage or shorts

Check the antifreez make sure it is not just water u can also test the antifreez to see how good it is.another reason it could be is your thermostat may need to changed or you may need one put in if someone has removed.the last thing it could be is more expensive it would be your heater core.

Unless you are in a very hot climate, with no air con working the radiator fan does not normally come on.

Pull it The relay is a plug in in the fuse box under he hood

1 may be alternator amp is low and load is high 2 alternator main +B to battery wire resistance to high

Not likely Do you not ask these questions over the years, at the shops you go to? They have the answers or the car has other issues & the parts they are using aren't good quality

165-185 temp is usually adequate..go with 185

You have a bad ignition power transistor ( this does roughly the same function as an ignition module) or a bad ignition coil. I would bet on a bad transistor....

You have a stuck fuel injector. It is leaking gas into the cylinder(s). If the fuel regulator is bad- the fuel pressure is almost always too low.

Your fuel pump is worn out...

The alternator belt drives the water pump and power steerin on these cars. You can start th engine but the steering will be very stiff and the engine will overheat within a few minutes.

Your starter is worn out and needs to be replaced.

when you turn on the AC- the idle evens out because the ecm instructs the Idle air motor to increase the airflow into the throttle body to maintain idle speed under the increased engine load. The idle air motor is defective on your car- it does the same function as a valve but is actually a small motor...

CHECK FOR SPARK OR FUEL

you have a bad ignition power transistor.

Starter relay or ignition switch could be bad.

MAKE SURE THE MAF plug is properly connected at the air filter housing- then check the idle air control motor assy. on the throttle body.Then remove and clean your dirty EGR valve- which is stuck open and allowing EGR at idle...which is not supposed to happen...

make sure the plugs are not bad but it sounds like it could be the fuel injector did you check for fuel there are at the rail

find all your spark plug wires, they all lead to the coil from the plug. or... you may have individual coils over each plug but that is very very unlikely for your 1993. ps... why do you need a new coil, their are a few more likely solutions ahead of the coil pack.

The fuel filter is under the hood, in the middle of the upper firewall, mounted in fuel line.