Fizzle

Ok. Face in hands shaking head...embarrassment! haha *****Problem Solved***** Loose positive cable (can't believe I over looked that one) and Loose connector into vp44. Left my truck at Rincon Truck Center while I was on vacation and they had it isolated in about an hour. Lesson learned!

guess what i noticed tonight. Is this what you meant signs of leaking connector? Looks like fuel on #5 and #6

I am with you on checking a few more things. Having the injectors pop tested sounds like a good plan. I have an electronic fuel pressure gauge on the lift pump. I hooked up a mechanical gauge and drove around with it, it had the same readings as the gauge hooked up to lift pump. I measured at the inlet to vp44. I read some other threads that had similar symptoms. The cures were as follows in no particular order: fuel additive to clean injectors, replacing cam sensor, replacing map sensor, and fixing an air leak in fuel line. I'll have time this weekend to work on it. I'll do one thing at a time to try and isolate the problem.

It has a half a tank of diesel. It does not happen at idle. When in park I can rev up to 2,500 rpm with no symptoms, only happens when driving. It hasn't happened before, just started happening and parked the truck until I figure out what is wrong. Not sure how old injectors are just bought the truck 208,000 miles. No signs of leaking injector or cracked lines.

Fuel Filter is new. No mods done to the truck...all stock, except fuel lift pump and timbo apps. Air filter looks new. Volt meter was low since this test drive was with the alternator disconnected. Never thought of the low oil pressure sensor, probably needs to replaced as well. My local mechanic hooked up their reader to read codes. Happens at random rpm's and throttle position. Yes....the fuel pressure is between 12-15psi when it does this. I tested the Fuel overflow check valve on the vp44 and it was way out of spec. Opened up under 10psi, like 7psi. I will replace that and report back. thanks for all the feedback

Hello all, I have a 2001 24valve Dodge ram 2500 automatic. Wonder if my vp44 is bad. Today when driving, on acceleration I got a really bad stutter/cough in the engine. I double checked the voltage on the timbo apps and it is in spec and no dead spots. On the raptor pure flow the fuel pressure is 15psi at idle and around 12psi when accelerating. I have changed the alternator, it's in spec, I even disconnected fuse and harness to isolate if it could be that and it didn't go away. On low pressure side of vp44 primed to make sure no air on that side. No error codes and at my wits end what to do next. attaching a video if that helps. any thoughts? IMG_7611.m4v

Thanks mopar1973man

I went and tested my alternator today. Idle ~.03vac Slowing going up on on Rpms to 2,000 I saw a few spikes The highest being .86vac Do you think this is my source of Torque Converter Lock / Unlock Issues? Should I just get the regulator/rectifier diode replacement from Larry B? The previous owner must of had this issue too. Noticed the ground wire behind the alternator had the tin foil hat recipe. ? I only had issues when towing a 10,000lb load uphill between 45-55mph overdrive on