Swapped cp3 during engine swap

malibu795

malibu795

misspeelleerr
Apr 28, 2007
8,236
550
113
42
in the buckeye state
Haven't changed the tune.. Haven't messed with anything cp3 related cause well haven't needed to.. This new to me cp3 wants to do ~13000psi at idle... Vs the old one did 4300 with same tune...
43-44% and 2.2V on FPR, idk the amp load since I don't have a FPR amp PID on my laptop.
And yes electronically there is no engine oil pressure.. Mechanically it does 30#@ 750rpm and 60#@1800
11887908_10206633918300207_8481176504713899561_n.jpg


So questions is how do i fix it.. And is there a PID to monitor current through/to the FPR?
 
02greysixer

02greysixer

Active member
Jun 4, 2011
1,829
7
38
North Central FL
Not sure but you might start with checking the frp sensor or wiring. I bet you have an open somewhere or a bad sensor and it's defaulted.

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02greysixer

02greysixer

Active member
Jun 4, 2011
1,829
7
38
North Central FL
I'd almost guarantee you have a frp sensor issue. If pressure is always constant at 13k it pretty much can't be a regulator or relief valve issue. The pressures would vary by 1000 or so psi at least with changes in load. Even if the regulator was stuck

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malibu795

malibu795

misspeelleerr
Apr 28, 2007
8,236
550
113
42
in the buckeye state
Put ~500 miles on it yesterday.. Then it limps won't build more than 4500psi..basically idle.. Anything more than 1100rpm it drains to 700-1000psi..
Talked to fleece guys.. They think pump died or is almost dead..
Should've swapped it out when it was on the ground :eek:
 
Chevy1925

Chevy1925

don't know sh!t about IFS
Staff member
Oct 21, 2009
21,670
5,817
113
Phoenix Az
malibu795 said:
Put ~500 miles on it yesterday.. Then it limps won't build more than 4500psi..basically idle.. Anything more than 1100rpm it drains to 700-1000psi..
Talked to fleece guys.. They think pump died or is almost dead..
Should've swapped it out when it was on the ground :eek:
Click to expand...

get after it before it truely dies and trashes your injectors. all these damn issues just wont leave ya alone adam
 
catman3126

catman3126

Ehhh?.... You don't say?
Jul 24, 2012
2,636
0
36
NE Oregon
Chevy1925 said:
get after it before it truely dies and trashes your injectors. all these damn issues just wont leave ya alone adam
Click to expand...

I've seen this on an 02' it would go down the freeway at 70 but it took forever to get there and would only maintain 4-5K and any throttle it would drop off. new pump a year ago and it was all good ever since. Worst part was the guy had it to two other shops before. one put a new set of injectors in it and that didn't work and the second did a s366 turbo swap and sent it out he door.
 
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