hessam69
Well-known member
- Joined
- Jun 19, 2009
- Location
- Sydney, Australia
Hi,
I have a 1993 940 with B230FB engine with LH 2.4 AW71.
I have always had a problem with the engine where the car runs well, however more than half the time, when I go to leave the traffic lights, the engine stumbles/hesitates for half a second before going smoothly. The idle is very smooth though. Also when starting from cold, the engine idles quite roughly for the first five or so seconds, then it is fine after that. Once warm, no idle issues.
I have replaced all the vacuum lines, serviced the throttle body, replaced the entire PCV system, spark plugs, spark plug leads, checked the coolant temp sensor, replaced the RPM sensor, fuel pump relay, adjusted the TPS, checked the FPR, tried three other AMM with no diffference, I am now out of ideas for what else to check. There are no fault codes. The engine drives as normal other than this issue. There is plenty of power, no other complaints at all
Thank you
I have a 1993 940 with B230FB engine with LH 2.4 AW71.
I have always had a problem with the engine where the car runs well, however more than half the time, when I go to leave the traffic lights, the engine stumbles/hesitates for half a second before going smoothly. The idle is very smooth though. Also when starting from cold, the engine idles quite roughly for the first five or so seconds, then it is fine after that. Once warm, no idle issues.
I have replaced all the vacuum lines, serviced the throttle body, replaced the entire PCV system, spark plugs, spark plug leads, checked the coolant temp sensor, replaced the RPM sensor, fuel pump relay, adjusted the TPS, checked the FPR, tried three other AMM with no diffference, I am now out of ideas for what else to check. There are no fault codes. The engine drives as normal other than this issue. There is plenty of power, no other complaints at all
Thank you