[dhschultz39]

Request some help on intermittent power loss for my '99 2500 4X.
On trip past weekend drove 500+ mi with normal power. On way home,
drove 25 mi, and then suddenly a loss of power requiring O/D Off to move at 50 mph. Stopped and shut truck down for 10 min, ran normal for next 50 miles, and then after climbing long hill, sudden loss of power requiring O/D Off to move at 50 mph, and 2nd gear to climb 6% hill. Limped for 60 miles thru mountains, then stopped for 45 minutes. Started up and drove 200 miles with normal power.
2 codes (P0234 and P0236), so pulled turbine to check waste gate actuator (standard Holset configuration) - no hangups, wastegate actuation normal. Slight wear on wastegate shaft from 100,000 miles.
New fuel filter 2000 miles ago, using Stanadyne cetane boost/anti-gel. Lift pump 11 psi last spring, 3000 mi ago. Will be checking again after turbine back in with new Banks Quick-Turbo Assembly/Wastegate Actuator #24052. Also will check injection pump overflow valve for lift at 14 psi and electrical connections to sensors like throttle position.
Any other ideas greatly appreciated.
Dave S.

 

[cummins6sp5.9]

Dave you don't have enough fuel pressure to open the bypass valve that requires 14 psi to open. You've only got 11 psi. I'd say a junk stock liftpump. You need atleast 15 psi at idle and nothing less then 10 at wide open throttle pull. Check into a FASS liftpump with a fuel pressure gauge before you smoke your $1000 vp injection pump. A lot of venders here sell the parts you NEED !!!

 

[dhschultz39]

thanks for the input dieselhead.
reading my Chrysler Shop Manual, Fuel Transfer Pump Pressure Test, p 14-79, for Mode 1 (engine cranking, not running), supposed [item (4)] to observe 5-7 psi at test port atop the fuel filter. On page 14-80, item (6), "Start engine.... Pressure should be a minimum of 69 kPa (10 psi) at idle speed." Over past 13 yrs due to early reported lift pump failures due to mounting on engine block (vibration), have checked fuel pressure per book each oil change (5K mi); has run nominal 11psi or more at idle. Fuel injection pump now has 100K mi with no previous problem.
having said all that, bought a spare OEM lift pump 10 yrs ago together with a kit to re-locate pump to frame which I intend to install near term since I've got it and since the installed lift pump has a 100K miles on it, and years ago it was a high failure rate item. Turbo Diesel Register (magazine devoted to turbo diesel Cummins) out of Georgia used to write about the failures frequently, the reason I started checked lift pump pressure routinely. But based on engine history, don't believe the lift pump to be the problem.
thanks again
r/dave s

 

[silverarrow]

I second the low fuel pressure vote. As stated above you need a minimum of 14 psi to open the VP overflow. This allows for proper cooling and lubrication of the vp. You said that you have 11 psi at idle, with factory lift pump and factory lines you are probably drawing the fuel pressure down to 3 or 4 psi. You are killing the VP and causing the problems that you are experiencing.

 

[dhschultz39]

thanks silverarrow
as stated above, plan on starting engine with new turbine exhaust housing / wastegate actuator, checking fuel pressure with OEM original lift pump just for info, then replacing fuel filter even tho only about 2000 mi on new one, and installing brand new OEM lift pump and pump re-location kit because I already have them in hand.
but still looking for what I believe to be the real problem because the symptoms, the trouble codes, and the truck's history don't point to the lift pump as the problem area. when i get new stuff in will post with results, and if I get the problem figured out, yet another post.
thanks for the help
r/s

 

[irish power mad]

I have some bad news for ya man. The 236 code is the death code for the vp44. Bit of a time bomb now really. It might stop tomorrow or it could stay going for the next 12 months.Low lp psi certainly hasn't helped.

 

[tylerallout]

P0236 is not the death code for the VP44, P0216 is. Both of the codes that he mentioned deal with the map sensor reading too high of boost. It could just be a bad map sensor.

 

[irish power mad]

P0236 is not the death code for the VP44, P0216 is. Both of the codes that he mentioned deal with the map sensor reading too high of boost. It could just be a bad map sensor.

oops, thats right. My bad . But yes a bad map sensor would cause the issues the op is having.

 

[young-gun]

youre kidding me ... please tell me there is some hope for me if my new truck has a p0216 code is that code seriously a 100% death code !?!:S:

 

[tylerallout]

youre kidding me ... please tell me there is some hope for me if my new truck has a p0216 code is that code seriously a 100% death code !?!:S:

Well most likely, but you can check the fuel pressure and if its low try replacing the lift pump. There has been a couple of people on here that have been lucky and that fixed it but it didn't on mine.

 

[pmccue]

I have read quite a few posts of people driving with no issues whatsoever for many thousands of miles with a stored 0216 code. If there are no symptoms dont worry, just drive . When symptoms(dead pedal) occur then install new vp (or possibly apps)

 

[dhschultz39]

problem fixed

sorry to you folks that were speaking in death tones about the VP44.
no such problem - those that had a better read than mine on the P0236 code
("turbo charger boost problem") that led them to the MAP were absolutely correct. good job guys. thanks much. talked to dealer, and they identified the culprit as the MAP for that code. (Code P0234 is an indirect result of MAP output being high, internal failure). MAP replaced, all's well.
OBTW - installed Geno's Garage kits (purchased 10 yrs ago, never installed - woe is me) to 1) move lift pump to frame aft transfer case, and 2) low pressure alarm on inlet to injection pump. In my opinion, well worth the bucks to protect the injection pump. Moving pump to frame lessens pump failure due to vibration; low pressure alarm (red peanut lite, on at 5 psig decreasing pressure) reduces risk of losing NPSH to injection pump.

 

[jlbayes]

that light is still to low of a pressure. that service information is old and out dated. at anypoint in time you do not want less than 14psi reaching your vp.

 

[Joshua3777]

i have an 05 ram 2500 with 400k
I'm having this issue where It will idle and run beautiful, and it will stumble with a the dead pedal no smoke ever. Other than the haze that goes away after warmed up from new injectors.
(Not tuned yet) bigbanginjection new towing injectors also a 165 fass new fca rail bypass works like it should. and it will stumble for about 5-7 seconds then ramp up to 2k and regain control. Basically I have new everything, the code reads Intermittent power to ecm. I was thinking it had to be from the alarm specifically becuase I put the wrong key in and it shut off then I put the right key in then all the sudden this all started all over again. It's been an issue for about a year it was gone for about 3 months this time.
But I'm at a loss.. the scanner I used showed the rail pressure drop as if I turned the key off.

my only code was the Intermittent power loss to ecm, what ever wire is "Intermittent" for my situation is what I need to figure out but the two main wires ( the ground at the chasis and the power from the tipm) seam to be ok...
Which power wire or "pin" can be Intermittent and the computer be powwd enough to be able to catch it. I need a pin out to track these issues down guys if anyone knows...
I can get the ecm part number but I'm at a loss I've no idea which wire or where.

 

[jakeandkatiesdad]

i have an 05 ram 2500 with 400k
I'm having this issue where It will idle and run beautiful, and it will stumble with a the dead pedal no smoke ever. Other than the haze that goes away after warmed up from new injectors.
(Not tuned yet) bigbanginjection new towing injectors also a 165 fass new fca rail bypass works like it should. and it will stumble for about 5-7 seconds then ramp up to 2k and regain control. Basically I have new everything, the code reads Intermittent power to ecm. I was thinking it had to be from the alarm specifically becuase I put the wrong key in and it shut off then I put the right key in then all the sudden this all started all over again. It's been an issue for about a year it was gone for about 3 months this time.
But I'm at a loss.. the scanner I used showed the rail pressure drop as if I turned the key off.

my only code was the Intermittent power loss to ecm, what ever wire is "Intermittent" for my situation is what I need to figure out but the two main wires ( the ground at the chasis and the power from the tipm) seam to be ok...
Which power wire or "pin" can be Intermittent and the computer be powwd enough to be able to catch it. I need a pin out to track these issues down guys if anyone knows...
I can get the ecm part number but I'm at a loss I've no idea which wire or where.

This thread is in the 2nd gen section. You'll have better luck getting an answer if you start a new thread in the 3rd gen section since you have an 05

 

[bigfish95971]

236 is NOT a VP44 death code. That would be 216. But it is for a bad MAP sensor or bad reading on one. Go there first. But if that is not it the SYMPTOMS are indicative of a VP going bad, or rather there. Keep checking codes and check the AMP sensor first.

 

[jakeandkatiesdad]

9 year old thread..............