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03 still runs rough than quits

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Old Jan 21, 2013 | 02:17 PM
  #11  
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I would bring it right back to that shop and have them figure it out.... obviously they screwed something up... almost sounds like a poor ground and/or main electrical connection.

If you have access or can get access to a starscan or some kind of logging tool you should be able to pinpoint what is going on.

My only real idea here is the fuel system... have you checked fuel pressure at each rail?
 
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Old Jan 21, 2013 | 02:29 PM
  #12  
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Originally Posted by Izero
I would bring it right back to that shop and have them figure it out.... obviously they screwed something up... almost sounds like a poor ground and/or main electrical connection.

If you have access or can get access to a starscan or some kind of logging tool you should be able to pinpoint what is going on.

My only real idea here is the fuel system... have you checked fuel pressure at each rail?
I have gone over all the grounds and connections.
Only checked it at the test port and it was good.

Darn shop is not know for the best of work plus it is not cheap.
Rates are $150hr.
 
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Old Jan 21, 2013 | 09:00 PM
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You said you changed the o2 sensors. What brand did you get? I went 3 rounds with those stupid o2 sensors! I tried 3 bosch sensors! They didn't work. I finally went to the dealer and got one. Worked like a champ! My truck also spitted and sputered with the bosch sensors.
 
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Old Jan 21, 2013 | 09:24 PM
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Had a similar issue a few years back. Truck sat for 3 months then started her up and same thing. Ended up throwing a code for the crank sensor a few days after starting, stalling, and pulling things apart so I agree with the above suggestion. Pull the crank sensor and have a look, just replace it. They are affordable. I think I got mine at rockauto.com for under $20.
 
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Old Jan 22, 2013 | 11:22 PM
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Originally Posted by jj141979
You said you changed the o2 sensors. What brand did you get? I went 3 rounds with those stupid o2 sensors! I tried 3 bosch sensors! They didn't work. I finally went to the dealer and got one. Worked like a champ! My truck also spitted and sputered with the bosch sensors.
Went with a boch first as the local parts store on carried them.
Did not help than i got a oem and it worked.

sonny i will check the sensor tomorrow if the winds dies down.
 
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Old Jan 23, 2013 | 09:14 AM
  #16  
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yeah the sensor might still be the problem...

If you are able to I would check the fuel pressure at each rail just to rule that out, it's a pretty quick and simple process, just make sure you have a fire extinguisher handy just in-case...
 
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Old Jan 23, 2013 | 05:07 PM
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Originally Posted by Izero
yeah the sensor might still be the problem...

If you are able to I would check the fuel pressure at each rail just to rule that out, it's a pretty quick and simple process, just make sure you have a fire extinguisher handy just in-case...
When i checked the fuel pressure before it was 50psi and was stable even when it quit.

Will be checking the sensor a bit later today.


Thanks
 
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Old Jan 24, 2013 | 09:44 AM
  #18  
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well the service manual says fuel pressure is suppose to be 63 psi +/- 5psi... so you are a little low... So give that fuel pump a good once over...
 
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Old Jan 26, 2013 | 04:00 PM
  #19  
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Originally Posted by Izero
well the service manual says fuel pressure is suppose to be 63 psi +/- 5psi... so you are a little low... So give that fuel pump a good once over...
Changed the crank sensor with one off the old motor because i do not have the money right now.
It has helped a bit but it will still die in reverse and does have a little stumble in neutral.

The chilton manual i have shows 47.2 to 51.2psi for the 03 hemi.

Thanks
 
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Old Jan 27, 2013 | 02:21 AM
  #20  
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check the compression in all the cylinders to see if its a broken valve spring


Does it run like this?

my 04 with the 5.7 it was a broken valve spring
 

Last edited by nate2587; Jan 27, 2013 at 02:25 AM.
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