I have a 99 f250 sd 7.3l and it just quit running suddenly. I changed the cps, and this did not fix it. I am getting fuel to the bowl, and I have checked the wiring for cracks- It is giving me a code p1670, and p0470. Is there some way of testing the cpu or idm module without trying new ones? Any other solutions?

 

Try posting this in the 7.3 ltr powerstroke forum and you will get more answers. this is for 09 F150's but you may still get help from here. Good luck