Posted March 31, 201312 yr Hi there. Enjoyed the interesting articles. I have 2006 that looses RP under load while the lift pump holds 12-14 PSI at all times. Evidently the CP3 is able to produce 22-23000 psi but not the volume the rail needs since it sinks to 2000-3000psi under load. Ordered a new FCA Solinoid at genos Any Ideas ?
March 31, 201312 yr Owner Ah... I think you are the German from California right? :think:If so the what I'm thinking is the lift pump is either wore out or the pickup screen in the tank is plugged up. He doesn't have a fuel pressure gauge either.
March 31, 201312 yr Michael, his post says 12-14 psi from the lift pump at all times.. makes me think he has a gauge?If the LP pressure is good and the rail pressure drops, then it's probably something with the CP3. Does it run like crap when the pressure drops?Pressure and volume are directly related, so if the volume isn't there then neither will the pressure. FCA is a good start, are you throwing any codes?What are you using to read all the pressures? Where is the LP pressure sender at, pre or post filters?
March 31, 201312 yr Owner duh... :doh:I'm not sure of the person now. At least the one I talked about this issue he did not have a fuel pressure gauge at the time.
April 1, 201312 yr Author AH64ID said: Michael, his post says 12-14 psi from the lift pump at all times.. makes me think he has a gauge? If the LP pressure is good and the rail pressure drops, then it's probably something with the CP3. Does it run like crap when the pressure drops? Pressure and volume are directly related, so if the volume isn't there then neither will the pressure. FCA is a good start, are you throwing any codes? What are you using to read all the pressures? Where is the LP pressure sender at, pre or post filters? Installed the fuel pressure gauge at the filter and it it still like i said at 12-14psi under all conditions. RP is messured with a CTS. As the pressure drops i notice (of course) a lack of power. No missfiring etc though. Codes are PO 148 (fuel del. problem) The Cp 3 can produce the pressure (22.5K) but not the volume (only 30-40%) I'l install the new FCA today after i obtain a 3.5mm L wrench - - - Updated - - - Mopar1973Man said: Ah... I think you are the German from California right? If so the what I'm thinking is the lift pump is either wore out or the pickup screen in the tank is plugged up. He doesn't have a fuel pressure gauge either. I am the German- I thought 12 to 14 psi is sufficiant. Some guys are at 5 psi If it's not the FCA it's the CP3
April 1, 201312 yr Hanno said: Installed the fuel pressure gauge at the filter and it it still like i said at 12-14psi under all conditions. RP is messured with a CTS. As the pressure drops i notice (of course) a lack of power. No missfiring etc though. Codes are PO 148 (fuel del. problem) The Cp 3 can produce the pressure (22.5K) but not the volume (only 30-40%) I'l install the new FCA today after i obtain a 3.5mm L wrench Which side of the filter is the pressure transducer on? You are building 22.5K psi at 30-40% load? Like I said pressure and volume are directly related, if you have pressure you have volume, no pressure means no volume. Pressure is a byproduct of volume. Your pressure but not volume comment is confusing me, when are you able to see 22.5K psi?
April 4, 201312 yr Author AH64ID said: Which side of the filter is the pressure transducer on? You are building 22.5K psi at 30-40% load? Like I said pressure and volume are directly related, if you have pressure you have volume, no pressure means no volume. Pressure is a byproduct of volume. Your pressure but not volume comment is confusing me, when are you able to see 22.5K psi? Geno's saved the day- (a tip from Michael) The new FCA solved all the problems !!! The 22 K psi FRP at idle is gone at idle I have now the normal 7000 psi and so is the pressure drop off (FRP down to 2k psi under load). Thanks everyone ! - - - Updated - - - dorkweed said: Bump. What did you find out??? Just changing one part- the FCA solved both problems. thanks
April 4, 201312 yr You didn't say it was making 22K psi at idle, yeah that is certainly an FCA fault.Glad to hear it's fixed.
Hi there.
Enjoyed the interesting articles.
the lift pump holds 12-14 PSI at all times.
Evidently the CP3 is able to produce 22-23000 psi
but not the volume the rail needs since it
sinks to 2000-3000psi under load.
Ordered a new FCA Solinoid at genos
Any Ideas ?