1994 Dodge Cummins problem
#1801468
04/12/15 02:10 AM
04/12/15 02:10 AM
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Joined: Jun 2003
Posts: 161 Logansport, Indiana
Budman
OP
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OP
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Joined: Jun 2003
Posts: 161
Logansport, Indiana
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My Dad has a 94 2500 Cummins Truck. He went to pick up a car for me in N.C. and his truck is acting up. He says that its acting like a plugged fuel filter. He stopped and changed the filter and said the old one looked fine. No power after driving it for a few minutes. If it sets an hour it will drive ok alot farther. He checked codes and it has code "12", "Battery has been disconnected in last 50 cycles. AND Code "34" Open or short in the Speed Control Solenoid Circuits or Speed Control Switch Voltage to High or Low. any help would be very appreciated thanks
All MOPARS & nothig else.
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Re: 1994 Dodge Cummins problem
[Re: Budman]
#1801710
04/12/15 02:31 PM
04/12/15 02:31 PM
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Joined: Oct 2006
Posts: 246 Cranberry Twp PA (North of Pit...
rumblefish72
enthusiast
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enthusiast
Joined: Oct 2006
Posts: 246
Cranberry Twp PA (North of Pit...
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check the fuel shutoff solenoid. I had a problem just like this on my 1997 and it was this solenoid not staying open after the truck started. It has two modes of operation ... 1) when you hit the starter, it gets full power to yank it open. 2) when you release the starter, the soleniod gets 1/2 power just to hold it open. On my truck, the rubber boot around the solenoid plunger was falling apart and little bits were jammed between the plunger rod and the solenoid body. At start, the solenoid yanked open but at run, it didn't let enough fuel by and there was no power. Google on "larry b starter contacts" and follow the redirect. look for the Dodge fuel solenoids page for replacement parts.
1972 Pro-Street 'Cuda, 500" Eagle stoker B Block, Eddy RPM heads, Victor Manifold, 850 Mighty Demon, Hemi 4 Speed, Dana 60 w/4.88 gears - Built by Hansen Racing Middlesex - NJ
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Re: 1994 Dodge Cummins problem
[Re: Budman]
#1801747
04/12/15 03:30 PM
04/12/15 03:30 PM
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Joined: Jun 2003
Posts: 161 Logansport, Indiana
Budman
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OP
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Posts: 161
Logansport, Indiana
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Thanks for ur replies He is leaving it at a Dodge Dealership and getting a rental car to get home.
All MOPARS & nothig else.
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Re: 1994 Dodge Cummins problem
[Re: DoctorDiff]
#1801895
04/12/15 08:02 PM
04/12/15 08:02 PM
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Joined: Nov 2003
Posts: 10,228 Colleyville
3hundred
I Live Here
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I Live Here
Joined: Nov 2003
Posts: 10,228
Colleyville
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My '95 did that a few years ago. I replaced all the common stuff (fuel switch, fuel pump, sending unit, fuel filter, fuel hoses).
The problem was caused by the injector pump. Same thing happened to my '96, injection pump. I hope it's something simpler, cheaper. Robert
'68 Fury Convertible '69 300 Convertible '15 Durango 5.7 Hemi '16 300 S Hemi
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Re: 1994 Dodge Cummins problem
[Re: teflon]
#1802127
04/13/15 12:31 AM
04/13/15 12:31 AM
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Joined: Jan 2003
Posts: 27,421 Balt. Md
383man
Too Many Posts
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Too Many Posts
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Posts: 27,421
Balt. Md
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Ron, no electric fuel pump on 94's, that was 1998 1/2 and up. 94's had a mechanical lift pump on the drivers side on the block. Yea I forgot as I just got so used to the ones I was working on having the electric pump most of the time. I dont remember if we had a kit to eliminate the mech pump as it is better to have the pump in the tank pushing the fuel up. On the electric ones it gave you a fuel pump block that went where the electric pump on the block was as this block they gave you let you just hook the fuel lines together where the electic pump was. There may have been a kit to eliminate the mechanical pumps but I cant remember. I just remember it seemed almost anytime I had a bad low pressure pump it would end up needing an injector pump. I would always start by checking the fuel filter first of course. Ron
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