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| 12 Valve 2nd Gen Dodge Cummins 94-98 Discussion of 12 Valve 5.9 Liter Dodge Cummins Diesels with P7100 Injection Pumps |
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I am pulling a 23' toy hauler about 8000 pounds with a 97 cummins 3/4 ton and with o/d off up slight grades i am keeping the truck at 60 mph at about 975 egt's and 10 boost. when i go up a 6% grade ... JOIN NOW TO REMOVE TRACER
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#1
11-29-2009, 02:35 AM
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pullin up steep grades
I am pulling a 23' toy hauler about 8000 pounds with a 97 cummins 3/4 ton and with o/d off up slight grades i am keeping the truck at 60 mph at about 975 egt's and 10 boost. when i go up a 6% grade top speed is 30 mph 1100 egt's and 18 boost. i just had the transmision serviced about 2 months ago and lift pump and filter replaced 6 months ago along with K&N (round) filter. where should i start to diagnose this problem? I have a buddy saying to check compression and i am thinking tranny (torque converter). truck has 278000 miles on it automatic tranny.
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#2
11-29-2009, 03:02 AM
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I don't think the compression has anything to do with it.If your tranny is a stock auto like mine i would seriously look at the tranny.On the 12 valves they are the weak link,especially with the milage on you truck.Can you be a little more detailed on the problem?
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#3
11-29-2009, 08:11 AM
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sounds like lack of fuel to me. what is done to the truck? was the tranny slippin? is the tranny fluid burnt smelling?
---AutoMerged DoublePost--- mine did the same with 12k on a grade.. my fuel plate and boost elbow and afc tune helped alot. Last edited by monster12valve; 11-29-2009 at 08:11 AM.. Reason: Automerged Doublepost
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#4
11-29-2009, 08:17 AM
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4" exhaust, different fuel plate, 3k gov springs, a touch more timing and you will think you have a different truck
question is the EGT reading pre or post turbo??
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#5
11-29-2009, 12:08 PM
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Tranny and fluid is red and does not smell burnt and the tranny was not slippin but is seems to shift to early and that is when i lose all power. The egts are before the turbo. I have been skeptical on moving the fuel plate just because i have heard that the trannies can not hold up to the torque. Thanks for the advice.
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#6
11-29-2009, 12:35 PM
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my stock 47rh handled a 100 plate full forward, 4in exhaust, bhaf, and boost elbow........for 6months
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#7
11-30-2009, 02:49 PM
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doesn't the 97 have the modules in them that have something to so with shift points.
Last edited by cummins_guy; 11-30-2009 at 02:59 PM..
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#8
11-30-2009, 04:42 PM
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Sounds like your tc might be slipping a lil bit
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#9
12-01-2009, 08:49 PM
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Transmission shop says tranny is good and i now have it getting a diagnostic on the engine. they are thinking it might be a sensor. AFU hopefully they can find something out i got to move across country before Christmas.
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