mixed and matched injectors from other engines, too swapped injectors as a set from a known-to-work 110 hp ATED engine (they had a different number, so I programmed them with Lexia) Things I have tried (and which did not have any effect on this behaviour):
No DTCs unless you deliberately cause them. The car does not consume oil or excessive amounts of diesel nor does it smoke in the least, and otherwise it runs just like you would expect any good 2.0 HDI to run (have had a few of these around over the years). The car has no DPF to empty, and the catalytic converter has obviously been gutted at some point. I have googled and tinkered, but none of the fixes seem to apply. Gets quite tiresome on longer journeys and especially when using the (recently retrofitted) cc. The surging is so slight, that you can't see it in the clocks but you can definitely feel it. Press the pedal some more and the surging stops and the car pulls just as you would expect, without any abnormalities.
Happens in every gear, noticeable in the 1900-3000 rpm range. It's like the throttle pedal was slightly pumped, with a frequency of 1-3 Hz. The car surges ever so slightly under small loads like gentle acceleration or climbing a slope. Having now sorted out the easier-to-diagnose flaws (leaking head gasket, tank pump not delivering fuel under 1/4 tank), I am at a loss with this last one. So, I have been blessed with a 2001 Dispatch, 93 hp 2.0 HDI engine (BTED w3, RHX), RPO 8950.
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