10-27-2008, 03:17 PM
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#1 (permalink)
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Offline
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Join Date: Oct 2003
Location: Sioux Falls, SD
Posts: 494
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Rough Idle/Chugging 5.9!
I asked about this problem in a previous posting. As of to date I have not gotten the problem corrected. The dealer replaced the FCA valve which we thought would help, but it didn't. The Fuel Transfer Pump in tank was putting out some low pressure readings. This was changed and for a couple of days was running okay. I did notice an increase in performance, even if it did not fix the rough idle problem. The tech checked all the fuel injectors and found no problems (I am not blowing white smoke). STAR commented that my idle time percentage was to high and that the injectors were in need of cleaning. Suggested using Centane additive, which I have been doing. Fuel mileage is now running about 1 to 2 more miles per gallon (15-17 mpg City Driving). If the injectors were bad, as some have suggested I would think fuel mileage would be poor. I pulled my fifth-wheel this past week with no problem and got 12 mpg going over hilly terrain.
This problem makes no sense to me! 
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“Serious Pickups have a Cummins Diesel!”
2003 Dodge Laramie, Silver, QC, LB, 3500 SRW ,SO, 48RE, 4:10, L/S Rear, Edge EZ Tow, 04' Bullet Grille, B&D X-Monitor, Afe Pro Guard 7, Brake-Guard, X-Pel, Luverne R/B's, Mag-Hytec, MagnaFlow. B&W 5th W/Hitch. 32' 2004 Holiday Rambler
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