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 Post subject: very rough idle and then not
PostPosted: Thu Oct 03, 2019 12:25 am 
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Joined: Sun Jul 15, 2007 2:51 am
Posts: 49
Location: socal
I recently filled up with fuel and left the engine running as usual. Drove a mile down the road and it felt like I dropped a cylinder by the time I got turned around to go back ( my first assumption was that I had dropped a load of gas in the tank accidentally) I was down to 2 cylinders so I just pulled over and shut down. Wait 30 seconds restart and all is normal and drove home and been driving normally with no issues. ???????

Anybody care to guess even a wag is cool but I have ruled out time dilation and gravity reversal.

Thank you for your time

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His 96 12 valve 5/12's, 62/65/14, built pump, Hamilton head and cam, fluidampner, high speed floormats
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 Post subject: Re: very rough idle and then not
PostPosted: Thu Oct 03, 2019 9:58 am 
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LOST Addict

Joined: Fri Jun 22, 2007 11:43 am
Posts: 4962
Location: Green Cove Springs FL
You were probably hit with an electromagnetic (EM) cannon.
The latest weapon deployed by the California Automotive Resistance Brotherhood, a.k.a "The REAL C.A.R.B."
Their goal is return to heydays of muscle cars, carburators, and points ingnitions. They feel that all electronic controls should be banned from cars and trucks.
Your only defense is to wrap your ECM in tin foil!
If you dont believe me, go to the Pomona Auto Swap Meet at the fairgrounds. You'll see what I mean. Wear your favorite "Rat Fink" t-shirt and you will be accepted as one of them.
:-)r

Crazy conspiaracy theories aside, you either...
A. got a cruddy tank of fuel and might have to change your fuel filter soon.
Or
B. experienced a temporary sensor fault that corrected itself

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 Post subject: Re: very rough idle and then not
PostPosted: Thu Oct 03, 2019 7:20 pm 
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Joined: Wed Mar 11, 2015 3:50 pm
Posts: 408
Location: Fairbanks, Alaska
cumminspilot wrote:
I recently filled up with fuel and left the engine running as usual. Drove a mile down the road and it felt like I dropped a cylinder by the time I got turned around to go back ( my first assumption was that I had dropped a load of gas in the tank accidentally) I was down to 2 cylinders so I just pulled over and shut down. Wait 30 seconds restart and all is normal and drove home and been driving normally with no issues. ???????

Anybody care to guess even a wag is cool but I have ruled out time dilation and gravity reversal.

Thank you for your time



Try priming your fuel filter head and see how much air you get out. Mine will do this occasionally and bleeding the air makes a significant improvement in low speed operation.

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1995 Dodge Ram 2500 4x4, 5.9 Cummins, 47RH, Reg Cab
2005 Liberty CRD,fixed the rockers and a couple more things,GDE Hot tune,Weeks Stage 1 and 2 EGR delete,Hot Diesel solutions Tstat assembly(wonderful heat!), ARP studs, OME 1.5" lift.....thanks Seth! (Sold)
2006 Liberty CRD....The Moose Hit


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 Post subject: Re: very rough idle and then not
PostPosted: Sat Oct 05, 2019 8:32 pm 
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Joined: Sun Apr 06, 2014 5:23 pm
Posts: 461
cumminspilot wrote:
I recently filled up with fuel and left the engine running as usual. Drove a mile down the road and it felt like I dropped a cylinder by the time I got turned around to go back ( my first assumption was that I had dropped a load of gas in the tank accidentally) I was down to 2 cylinders so I just pulled over and shut down. Wait 30 seconds restart and all is normal and drove home and been driving normally with no issues. ???????

Anybody care to guess even a wag is cool but I have ruled out time dilation and gravity reversal.

Thank you for your time


It sound a bit like a harness problem.

Mine happen to run on 3 but it will never run on 2 , it will just dies.....

I have a pin on the harness to ECM connector that is loose


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 Post subject: Re: very rough idle and then not
PostPosted: Wed Oct 09, 2019 8:15 pm 
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Joined: Sun Jul 15, 2007 2:51 am
Posts: 49
Location: socal
Over 100 miles later problem has not repeated and I have done nothing but drive it

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Hers 05 kj ehm, egr delete, unplugged fuel heater, exhaust improvements
His 96 12 valve 5/12's, 62/65/14, built pump, Hamilton head and cam, fluidampner, high speed floormats
His 91 12 valve stock


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 Post subject: Re: very rough idle and then not
PostPosted: Wed Oct 09, 2019 10:04 pm 
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Joined: Tue Dec 16, 2014 9:33 pm
Posts: 1128
Location: Jackson,TN
hope that was the one and only hiccup. Good Luck!!!

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05 Blu Lim, Dayton, GDE HT, 255/75/18 , 210K , H TC
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All CRDS: Fumoto, Lift , Fan Shroud mod, fuel head Gen II, SAMCOS,self TB, 2 Mic filt, Hayden


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 Post subject: Re: very rough idle and then not
PostPosted: Fri Oct 11, 2019 10:15 pm 
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Joined: Wed Sep 12, 2012 11:30 pm
Posts: 233
Location: Midwest
cumminspilot wrote:
I recently filled up with fuel and left the engine running as usual. Drove a mile down the road and it felt like I dropped a cylinder by the time I got turned around to go back ( my first assumption was that I had dropped a load of gas in the tank accidentally) I was down to 2 cylinders so I just pulled over and shut down. Wait 30 seconds restart and all is normal and drove home and been driving normally with no issues. ???????

Anybody care to guess even a wag is cool but I have ruled out time dilation and gravity reversal.

Thank you for your time


Maybe you sucked some aerated fuel into the fuel filter if you left the engine running.

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#2 2006 Metallic Green Limited; currently DOA
#3 2005 Silver project; currently not running...don't judge me


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 Post subject: Re: very rough idle and then not
PostPosted: Fri Oct 11, 2019 10:43 pm 
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Joined: Thu Sep 06, 2007 9:51 pm
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Location: Somewhere between Heaven and Hell... But it is really hot here on Earth...
Aerated fuel shouldn't be an issue once it hits the filter... BUT it is possible that you stirred up some guck and that got into the filter. If the performance suffers again, it will likely be filter time. What you describe sounds like a filter at the end of its life.

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 Post subject: Re: very rough idle and then not
PostPosted: Sat Oct 12, 2019 9:31 pm 
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Joined: Sun Mar 28, 2010 9:15 am
Posts: 5431
Location: Tallahassee, Florida
Happened to me once but never happened again. No known cause.

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