My dads 03 hd fatboy recently had the csps "crankshaft position sensor " go bad while on a trip so was towed to the near by hd dealer. And since then the check engine light will sometimes come on going down the road . And has started running rough. So checked the power commander and for me to get the afr down to 13.2 -13.8 I was having to put over 100 points of fuel into the programmer and the reading is still going crazy from time to time. So checked the fuel pressure and have a reading of around 50-60 psi.

Where do I go from now. Any advice is appreciated

 

Very interesting situation. I'll be watching this thread closely. I assume that since the Check Engine Light is coming on, there are fault codes stored. Retrieving these codes may be a starting point.

 

Welcome to the Forum from Colorado!
Here is a link to diagnostic codes that I hope helps:
https://www.hdforums.com/forum/softa...odes-dtcs.html
Also check throttle position sensor.

 

I watched the tps while I was monitoring the power band and wideband. And the the sensor is nice and steady .
I will try the diagnostic Tom hopefully. Thanks