Truck dies under heavy-ish acceleration - Dodge Cummins Diesel Forum
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post #1 of 19 (permalink) Old 05-21-2019, 08:48 PM Thread Starter
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Truck dies under heavy-ish acceleration

I've recently started having issues with my my truck dying under heavier acceleration. First time it happened I thought it was my quad adrenaline as the wire for the wire tap had come loose in the connector for it, and unhooking the tuner had seemed to fix it. It threw a p0237, 0252, 0253 and set my check engine light on, however after driving with the adrenaline unhooked for an hour or two, the light turned off. However, I was driving home from work tonight, got on it a little to pass someone, and it just died. Same thing had happened before I unhooked the tuner, I got on it a little bit and was probably somewhere around 2300-2600 rpm when it died. Other than suddenly dying, the truck is running great. It'll run up to 3400ish rpm in neutral, no white smoke, fires right up except for when it dies. It'll take a couple tries to get it going again when it does.

I've searched around plenty on the forums and the most similar thing I've found is some sort of fuel separation issue inside the vp44 when you suddenly let off the accelerator. I've got an airdog on the truck, could it be starting to get weak? I haven't found anyone who's had the same issue so far, thanks for any input.


2002 Ram 2500 5 Speed/75 hp Injectors/Airdog 150 gph/S&B Intake/4" MBRP Straight Pipe/Quadzilla Adrenaline/Plan on upgrading to around 500 RWHP
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post #2 of 19 (permalink) Old 05-21-2019, 09:11 PM
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Guessing you donít have a fuel pressure gauge?

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post #3 of 19 (permalink) Old 05-21-2019, 09:12 PM Thread Starter
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Quote:
Originally Posted by 98whitelightnin View Post
Guessing you don’t have a fuel pressure gauge?
I do, I'm running about 18 psi idle, 14ish at wide open

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post #4 of 19 (permalink) Old 05-22-2019, 08:49 PM
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P0237 Map Sensor Voltage Too Low. MAP sensor voltage input below the minimum acceptable
voltage.

P0253 Fuel Injection Pump Fuel Valve Open Circuit.
Problem sensed with fuel circuit internal to fuel injection
pump.

https://mopar1973man.com/cummins/art...l-missing-r69/

'01.5 QC, SB, 6spd 4x4, Drag Comp, 4" exh. Jammer 100's, 62-65-.70A/R WG, adj.boost elbow Big Line, fuel press.pyro & boost gauges fuel cooler BHAF, Black Holley lift pump-12psi WOT Ceramic/Kevlar SD clutch, studs Take time to turn-so you don't burn
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post #5 of 19 (permalink) Old 05-22-2019, 08:55 PM Thread Starter
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Quote:
Originally Posted by Clunk View Post
P0237 Map Sensor Voltage Too Low. MAP sensor voltage input below the minimum acceptable
voltage.

P0253 Fuel Injection Pump Fuel Valve Open Circuit.
Problem sensed with fuel circuit internal to fuel injection
pump.

https://mopar1973man.com/cummins/art...l-missing-r69/
I dont think the codes are the issue. I hooked my adrenaline back up and they go away.

I have however found that it's not necessarily heavy acceleration that causes it though. For whatever reason, when it dies, my lift pump won't run, even when I just bumping the starter. If I let it sit for a few minutes it will start running and build good pressure. Only thing I've really noticed is that the airdog makes kind of a squealing belt sound unless I clamp off the return line between the filter base and the tank. Not sure if that could be a sign of a problem but it sure does sound bad. Could my lift pump be overheating and/or on it's way out? I have no idea how long it's been on the truck.

2002 Ram 2500 5 Speed/75 hp Injectors/Airdog 150 gph/S&B Intake/4" MBRP Straight Pipe/Quadzilla Adrenaline/Plan on upgrading to around 500 RWHP
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post #6 of 19 (permalink) Old 05-23-2019, 06:48 PM Thread Starter
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Will the lift pump continue to receive voltage if the engine dies but the key is still on? I'm trying to figure out why my pump keeps stopping.

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post #7 of 19 (permalink) Old 05-23-2019, 08:54 PM Thread Starter
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So I've been messing with it and found that when the truck dies, the lift pump is no longer getting voltage. However, if I let the truck sit for a few minutes, it starts working again and the truck fires right back up.

I have noticed that if I park the truck instead of it dying, the lift pump won't run when I bump the starter for a little while but the truck still will start, unlike when it dies. Am I having some sort of weird ECM issue or something?

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post #8 of 19 (permalink) Old 05-23-2019, 10:41 PM
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cold start scenario.....does the WTS light illuminate IMMEDIATELY when the key is turned to on ? even hot weather, it should flicker right away...if not, that is one indicator of a failing ecm.

you should be able to bump the starter for a 25 sec prime...
and it should do a 2-3 sec prime with key selected to on.

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post #9 of 19 (permalink) Old 05-23-2019, 10:43 PM Thread Starter
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cold start scenario.....does the WTS light illuminate IMMEDIATELY when the key is turned to on ? even hot weather, it should flicker right away...if not, that is one indicator of a failing ecm.

you should be able to bump the starter for a 25 sec prime...
and it should do a 2-3 sec prime with key selected to on.
The WTS comes on immediately when the key is turned to on. The lift pump does the 25 second prime most of the time when the key is bumped but for whatever reason won't do it for a few minutes after the truck has died on me or I shut it off.

2002 Ram 2500 5 Speed/75 hp Injectors/Airdog 150 gph/S&B Intake/4" MBRP Straight Pipe/Quadzilla Adrenaline/Plan on upgrading to around 500 RWHP
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post #10 of 19 (permalink) Old 05-24-2019, 06:59 PM
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Is the airdog wired with the original lift pump wiring or through a relay?
The stock lift pump pulls around 3 amps and that is what the ECM part of the story is designed for. The airdog, I suspect pulls a lot more current than that, more than the ECM can handle.

'01.5 QC, SB, 6spd 4x4, Drag Comp, 4" exh. Jammer 100's, 62-65-.70A/R WG, adj.boost elbow Big Line, fuel press.pyro & boost gauges fuel cooler BHAF, Black Holley lift pump-12psi WOT Ceramic/Kevlar SD clutch, studs Take time to turn-so you don't burn
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post #11 of 19 (permalink) Old 05-24-2019, 07:01 PM Thread Starter
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Quote:
Originally Posted by Clunk View Post
Is the airdog wired with the original lift pump wiring or through a relay?
The stock lift pump pulls around 8 amps and that is what the ECM part of the story is designed for. The airdog, I suspect pulls a lot more current than that, more than the ECM can handle.
It's through the wiring that comes with it, so yes, it's on a relay.

Is it possible for maybe a loose wire or a short on the ecm or injection pump wiring to kill the truck like that?

2002 Ram 2500 5 Speed/75 hp Injectors/Airdog 150 gph/S&B Intake/4" MBRP Straight Pipe/Quadzilla Adrenaline/Plan on upgrading to around 500 RWHP
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post #12 of 19 (permalink) Old 05-24-2019, 07:06 PM
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Yes'sir. Also, lift pumps are not supposed to make squealing noises or quit running for no reason.

'01.5 QC, SB, 6spd 4x4, Drag Comp, 4" exh. Jammer 100's, 62-65-.70A/R WG, adj.boost elbow Big Line, fuel press.pyro & boost gauges fuel cooler BHAF, Black Holley lift pump-12psi WOT Ceramic/Kevlar SD clutch, studs Take time to turn-so you don't burn
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