Truck doing weird things
Post Fiend
Joined: Mar 2007
Posts: 26,966
Likes: 50
From: Texas
No. Your P0340 (CMP Sensor Circuit Malfunction) just means it's time to drop $30 on a new CPS (CMP) from Ford.
Chaffed wires typically won't leave any codes unless it's related to weak connection on a battery.
Chaffed wires typically won't leave any codes unless it's related to weak connection on a battery.
Freshman User
Joined: Mar 2005
Posts: 45
Likes: 0
From: Charles Town, WV
I picked up 2 new CPS's this morning from the dealership. I drove to the truck and installed both of them, one in the engine the other in the glove box with a spare 10mm socket and ratchet.
Truck fired right up, and maybe it's just in my head, but it feels like it idles smoother now. I noticed the old sensor has these two little silicone "eyes" in it while the new one is completely sealed. Is it possible those two little silicone things are seals and eventually leaked and caused the sensor to fail? I'm just amazed that the massively problematic sensor was $250, while the newer redesigned unit looks to be more robust and costs $27.62 at the dealer.
Thanks for the heads up on the parts fellas.
Truck fired right up, and maybe it's just in my head, but it feels like it idles smoother now. I noticed the old sensor has these two little silicone "eyes" in it while the new one is completely sealed. Is it possible those two little silicone things are seals and eventually leaked and caused the sensor to fail? I'm just amazed that the massively problematic sensor was $250, while the newer redesigned unit looks to be more robust and costs $27.62 at the dealer.
Thanks for the heads up on the parts fellas.
