Last post on Nov 02, 2012 at 6:59 AM
You are in the Dodge Ram-2010 and older
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Dodge Ram Pickup 2500, Dodge Ram Pickup 3500, Diesel, Truck
#803 of 852 97 dodge 2500 cummings alternator cycling/ changing voltage when cold start
Nov 03, 2010 (5:09 pm)
when my 97 dodge 2500 4x4 cummings starts and is cold the voltage cycles from 12.2 to 13.8 until the truck warms up. Is this normal. you can hear the change. I read that the intake manifold heaters cycle, but i have burned through 2 napa batteries in 18 months. The alternator is 4 years old and is also napa. Does it sound like something is wrong
#804 of 852 2001 cummins auto with trouble code P1688
Nov 16, 2010 (5:11 pm)
I have a 2001 Dodge with 5.9 cumming and auto. I was traveling normally and without warning the truck shut off and would not restart. Checked and found no fuel pressure from lift pump. and put scanner on the truck.. Trouble code P1688 was set. I ordered and replace the fuel pump and now have good fuel pressure to injector pump. I can reset the code but it resets when I try to stsrt... Help please
#805 of 852 Re: 97 dodge 2500 cummings alternator cycling/ changing voltage when cold start [pedro14]
by kcram HOST
Nov 17, 2010 (7:42 pm)
The cycling is normal (yes, it's caused by the intake heater), and lasts about 3 minutes.
If you're going through batteries that quickly, you need to check for a drain somewhere, or make sure you have sufficient amp ratings (never use less than 750 CCA).
kcram - Pickups/Wagons Host
#806 of 852 Oil puddle?
Nov 18, 2010 (7:42 am)
I have an 06 cummings and every now and then i will get a puddle of something on the floor. I cant tell want it is, its not engine oil looks like tranny fluid and water mixed has no smell. But there is a hose that is exposed that looks like it is supposed to drain this. Is this normal.
#807 of 852 97 dodge diesel 2500
Nov 26, 2010 (11:05 pm)
I have a 97 dodge diesel that will not start .It has a new lift pump ,neew tps ,the fuel shutoff solenoid is working ,It will start with starter fluid sprayed into intake but will not continue to run.What else can I try?
#808 of 852 Re: 97 dodge diesel 2500 [tatsr2]
Nov 27, 2010 (7:22 pm)
could be too much fuel pressure going to the pump, some 24 valves ; after being rebuilt have to have a 8 - 10 pound fuel regulator put in the line between lift pump and rotary pump. NOT 100% on the 12 valves but maybe it will help.
Can be picked up at local auto parts store for around 10 bucks, 2 water clamps and one splice and your in shape.
#809 of 852 2001 Dodge Preheater
Dec 07, 2010 (11:12 pm)
Is it possible for the heater to melt and collapse into the manifold if the relay contacts weld shut, and batterys drain completly?
#810 of 852 Re: Transmission Problem [khigginbotham]
Mar 03, 2011 (5:32 pm)
I also have a 2001 cummins with auto trans. I had the same problem 2 years ago. I have 144,000 on the truck now and no more problem. I thought the problem was the tranny or throttle position sensor, which is $400+. It was neither. I found out from a mechanic from California and $35, that it is a grounding problem. The transmission is doing what it is told. I cleaned the grounding posts on both batteries real well and this fixed the problem. If the computor doesn't have a good ground, this will happen. I didn't think the posts looked bad at all, but after the cleaning it worked fine. Hope this helps if you haven't fixed it all ready.
#811 of 852 Head lamp out no fuse, no bad bulb,2006 3500 ram dsl
Mar 21, 2011 (5:30 pm)
I cuurently have a head lamp on the rt side out only low beam. I assumed that the bulb was gone but after replacing still no light. Checking voltage at bulb outlet plug I get 10.3v between high and low beam lines but nothing through grounded leg sugesting that the ground is bad. However, high beam works just fine and reads correctly 12+ v when high beam is energized. Iremover the pcm (fuse pannel and attached circuit board) and checked all connectors without finding any obvious shorts or other signs of damage. I though that I read on a previous post something about wiring issues in loom /harness above fender and am suspecting that there may be a problem with the wiring from the light receptical to the pcm. I will need to find the correct wire at the pcm and check continuity to light recept.
If anyone has some additional info that might direct me in a dif direction I certainly would appreciate it, I don't think that I want just jury rig a wire from the left light if I can correct the problem correctly.
#812 of 852 Re: Head lamp out no fuse, no bad bulb,2006 3500 ram dsl [lovehate2]
Apr 16, 2011 (7:36 pm)
Did you replace the bulb with a mopar bulb? Check the continuity of the old bulb before tearing into the truck to far. The pcm monitors the resistance of the bulbs very close and will not work with many aftermarket bulbs. This will also set a soft code if you have access to a good scanner (not just a obd unit). A good scanner will tell you the condition of the circuit with out tearing open the truck. and dont jumper left to right as the circuits are separate from the pcm and the extra load will cause havoc.