031tun

ok... I have been having this problem for a few weeks now, I been trying to read and learn about the problem and what I have learned is that I may have faulty injectors! I just got back from a long drive with my truck 1000km and i just parked it overnight without plugging it in, this morning it was about -10 degrees C outside and I wanted to see if it would start without being plugged in, did not fire, so I plugged it in for a hour and went back out fired right up, But.... now I have two codes first time for this, first code is p0480 Cooling Fan 1 Control Circuit/Open (Low Speed Fan Relay) second code is p0336 Crankshaft Position Sensor Performance , I read a week ago about a guy who had this cold start problem and it had something to do with his Crankshaft position sensor, I am hoping someone reads this and can give me some advice on what steps i should take on how to solve my problem, I would hate to replace injectors and have the same problem when all it needed was a new crankshaft position sensor, I also read that i may need to put a loom around the leads coming off my crankshaft position sensor that come up past the AC compressor because they run together? PLEASE HELP ANY INFO WILL BE GREATLY APPRECIATED

06RAM2500

Disconnect the CKP sensor harness connector.
NOTE: Check connectors - Clean/repair as necessary.
Measure the resistance between the (K853) 5-volt supply circuit and the (K24) signal circuit of the sensor.
Is the resistance between 900 and 1100 ohms?
Yes >> Go To 2
No >> Replace the CKP sensor

BigIron70

The easiest and cheapest way is to cap off injector lines at the fuel rail, cap off one by one until you find injector causing the no start. You can also do injector return flow test. Special fittings needed and test takes sometime to run.

https://millerspecialtools.spx.com/Detail.aspx?id=738

https://millerspecialtools.spx.com/Detail.aspx?id=736

https://millerspecialtools.spx.com/Detail.aspx?id=1524