Dying cp3??

[lucas6.6]

What are the symptoms of a cp3 on its way out? I've noticed that there's a pretty significant difference in rail pressure at certain points. The most I've noticed is tonight, I rolled into it pretty hard from about 35mph, actual rail pressure was about 13k when desired was showing 24-26k. It only does this for about 5 seconds, after that it climbs back up closer to desired, but still doesn't meet desired (I think a lift pump would solve that.) Would a lift pump solve all of this or is the cp3 getting weak?

 

[motoking_1990]

A lift pump is good wether its going out or not. Takes some stress out of the pump having to pull the fuel from the tank. When my cp3 was going I could tell a power difference like night and day. Mine commanded to 28k was actual 14k and that was it. It wouldnt go up any further. I would still recommend a lift pump even if your cp3 is bad.

 

[lucas6.6]

Any way to test it to find out?

 

[motoking_1990]

I had Mark at Danville diagnose mine and he used just a tech 2. They knew it had fuel leaking somewhere and after checking injectors they came to the conclusion the cp3 was weak.

 

[ty_LBZ]

Showing all the signs of fuel starvation, get a lift pump or turn tuning down to stock

 

[lucas6.6]

I think I'd rather get a lift pump than turn the tuning down

 

[Brent@LDS]

Where are you located? How many miles are on the truck?

 

[lucas6.6]

Central WI, and the truck has 224k on it.

 

[Awenta]

Lift pump then log data and compare

Sent from my SM-N910V using Tapatalk

 

[lucas6.6]

Took the truck in today, cp3 is in great shape, ended up walking out with a AirDog:thumb:

 

[motoking_1990]

Took the truck in today, cp3 is in great shape, ended up walking out with a AirDog:thumb:

Sweet glad to hear its not the cp3!

 

[Awenta]

That's good news. Log it now and see how it's performing

Sent from my SM-N910V using Tapatalk

 

[lucas6.6]

Will do that tmrw. The only concern I have now is that Ill be able to take full advantage of my hottest tune, which will eventually lead to a built trans

 

[motoking_1990]

That would be one less thing that you would have to worry about. Just like the lift pump a built trans should be a must. Especially if your looking to keep adding more power.

 

[lucas6.6]

Oh I'm definitely looking to make more power. Much more. I just don't know if I'm ready to put my wallet through that kind of torture. :roflmao:

 

[motoking_1990]

Never too late to start saving! Not many of us can just throw 5k at any givin time into our trucks.

 

[lucas6.6]

I'm a member of that group lol. Gotta prioritize