Engine/Transmission (1998.5 - 2002) Jerking/Missing condition on an 01, 24 valve

[pfmoale]

I recently replaced my injection pump and lift pump, a DDRP FASS unit at 65,000 miles.
After installation, everything seemed to be going well, plenty of power, fuel pressure steady. Was having concerns with fuel flow. My test showed I am getting 2 liters in a 25 second "Tick of the key".

Just the other day, when powering up a slight grade, the engine started to miss, and jerk, sort of like what a gasoline engine would do when it isn't getting a good spark, or the distributor cap is bad. Seems it's an intermittent problem, and only does it when powering on the throttle. Not to noticeable when cruising on the flat.

Installed a new OEM fuel filter (at the engine), recently, at time of I. P. and L. P. change outs. Only several hundred miles on them. Removed the small mesh screen that came with the DDRP FASS lift pump, and replaced with a Napa brand #3003, 3/8" inline, before the lift pump, as recommended by FASS.

So far I do NOT have any DTC's or "Check engine" lights coming on.

Any ideas on what this is, or whats going on, and most importantly how to fix it ?

Thanks for reading this, any comments would be very helpful.


Regards,
Peter

 

[georgej]

When my truck did this I went through and disconnected and reconnected the map sensor and tuning box. I also cleaned the battery connections. For some reason cool fall weather and moisture will make electrical gremlins come to life

Good luck

Also see "1689 code something is not right" post