25-09-2014, 10:54 AM
(This post was last modified: 25-09-2014, 12:33 PM by powerandtorque.)
For what it's worth, my old 306 used to do something similar at low rpm on a very light throttle - a sort of surging/judder a bit like it was going into anti-stall but it wasn't. Come off the throttle completely or add more throttle and it would go away. It gradually got worse over the final 50k odd miles I had the car, going from barely noticeable to ever so slightly annoying.
I put it down to either wear on the TPS or the fact that the injectors were tired (over 200k miles at this point) but never did actually look into the problem. The MAF's got swapped between that car and my current HDi when I was trying to identify another issue, and this didn't change the surge/judder so I'm assuming the MAF wasn't at fault.
PS. That was an early HDi with the 976 ECU that I'm assuming you've also got if unplugging the MAF put it into limp mode - the later HDi ECU's don't go into limp mode when you unplug the MAF y'see...
I put it down to either wear on the TPS or the fact that the injectors were tired (over 200k miles at this point) but never did actually look into the problem. The MAF's got swapped between that car and my current HDi when I was trying to identify another issue, and this didn't change the surge/judder so I'm assuming the MAF wasn't at fault.
PS. That was an early HDi with the 976 ECU that I'm assuming you've also got if unplugging the MAF put it into limp mode - the later HDi ECU's don't go into limp mode when you unplug the MAF y'see...
1990 Peugeot 205 GTi 1.9 // 1991 Peugeot 205 GTi 1.9 16v // 1992 Peugeot 205 GTi 1.9 // 1999 Peugeot 306 HDi Estate