03 rail pressure PLEASE HELP!!!
07-30-2007, 08:50 AM
#1
Registered User
Thread Starter
Join Date: Aug 2003
Location: Michigan
Posts: 38
Likes: 0
Received 0 Likes
on
0 Posts
03 rail pressure PLEASE HELP!!!
My 03 will not start with out a shot of ether. it runs fine once it starts but if i shut it off i am SOL. i changed the transfer pump but that did not fix it. were could i be loosing prime in the fuel system. Is there a by pass valve that might be stuck or an injector leaking. please help i am looking fo info before i go to the dealer.
07-30-2007, 09:05 AM
#2
Registered User
Join Date: Nov 2006
Location: Osawatomie,Kansas
Posts: 23
Likes: 0
Received 0 Likes
on
0 Posts
Same problem
We have an 03 with the same problem. We have changed Injector pump, Lift pump, pedal sensor, Fuel contral Actuator, and Fly wheel sensor. Truck still has problem starting and losing power. Just this morning we had to give her a shot of starting fluid. All of this has been done at local Dodge dealer and they final give up on this truck. we have had the fuel tested for bact. three times and it has been clean each time.
07-30-2007, 09:41 AM
#5
Registered User
Join Date: Nov 2006
Location: Osawatomie,Kansas
Posts: 23
Likes: 0
Received 0 Likes
on
0 Posts
Yes, we just tried the key code it show P0251. We didn't know you could get a code by doing it that way because Dodge said this truck was not showing a code.But after reading some of the other post we tried it.
07-30-2007, 09:56 AM
#7
SYMPTOM
P0251-CP3 PUMP REGULATOR CONTROL
WHEN MONITORED
When the ignition is on.
SET CONDITION
The ECM detects a discrepancy between the PWM supplied to the Electronic Fuel control actuator and the PWM returned from the Electronic Fuel Control Actuator.
POSSIBLE CAUSES
cause that sounds like thats might be where your at
also check ALL your wiring harnesses
P0251-CP3 PUMP REGULATOR CONTROL
WHEN MONITORED
When the ignition is on.
SET CONDITION
The ECM detects a discrepancy between the PWM supplied to the Electronic Fuel control actuator and the PWM returned from the Electronic Fuel Control Actuator.
POSSIBLE CAUSES
- Intermittent condition
- Fuel Control Actuator
- Return wire open from FCA to ECM
- Supply wire open From FCA to ECM
- Supply circuit shorted to voltage
- ECM
cause that sounds like thats might be where your at
also check ALL your wiring harnesses
Trending Topics
07-30-2007, 10:45 AM
#12
DTR's 'Go to Guy'
Is the FCA clicking when you turn the key on? I think it should have at least one click? Check those wires from the FCA to the ECM and like 53willys said, it very well could be the ecm.
07-30-2007, 10:50 AM
#13
Registered User
Join Date: Jul 2006
Location: western,pa
Posts: 485
Likes: 0
Received 0 Likes
on
0 Posts
you probably have a bad injector i was having trouble with mine starting up and then i got it pressure tested and found out i had a bad numbe six injector
got it fixed no problem since then
got it fixed no problem since then
07-30-2007, 11:09 AM
#14
Registered User
Join Date: Nov 2006
Location: Osawatomie,Kansas
Posts: 23
Likes: 0
Received 0 Likes
on
0 Posts
We just found a wire @ the ECM that is White with an orange stripe on it and it is located on the side of the ECM.
It go's into the wiring plug second from the front and it has been cut and spliced. It is also showing bare wire. Do, you Know what this wire go's to?
It go's into the wiring plug second from the front and it has been cut and spliced. It is also showing bare wire. Do, you Know what this wire go's to?
