Engine hard start in cold weather

SOURCE: Cold weather starting problems with battery

Have you had the battery checked..Cold weather is the worst enemy on a battery. They work fine in summer but cold will get em.

SOURCE: F250 Ford 7.3 L Powerstroke Hard to Start Cold

I have a 2000 F250 with Powerstroke and my buddy has a 02 with same engine. Both of us have had the same problem. There are two coils (look like starter coils) on top of the engine that can be seen from the passenger side of the truck. The shorter of the two, has to do with supplying voltage to the glow plugs. When this coil gets older, it breaks down causing a higher resistance in the circuit. Which reduces the volts that the glow plugs see. In turn resembles a problem with the plugs. My buddy and I changed the coils and both trucks start like new. The part cost $80-$90. and can be changed in less than 5 minutes. Glow plugs are a lot bigger job and more expensive.

SOURCE: Car starts hard and runs rough in cold weather, undrivable

The correct spark plugs are very important. Glad to hear you got it fixed good.

SOURCE: 2000 toyota tundra has no throttle response during extreme cold

This throttle body has a TPS ( throttle position sensor) and a Accelerator pedal sensor on it. The TPS is on the drivers side and the APS is on the pass side of the throttle body. When this happened your check engine lite came on then went off when it warmed up and acted normally. The code is still in History codes. Check it with a scan tool. I foget the code number but if it come up with the APS code in History, replace that sensor....not the TPS. It is a sealed sensor that gets moisture in it when the seal deteriates and it freezes in very cold weather.

SOURCE: Wiring Diagram for 1999 Ford Ranger 3.0

if u can gain access to the ignition switch wiring use a testlight and probe each wire while turning the ignition at start position.one of these wires shld have power during starting position and release it again to confirm.this wire goes directly to the trasmission multi lever position swicht (mlp).this MLP is mounted just outside the transmission shifting lever ganged together.Trace the corresponding return wire using the testlight. You may need someone to help you do the job.The return wire usually go to a relay on your fuse box on the engine compartment.Then from relay to the starter.