My sleds a 07 M8, please ignore the mods in my sig cause I had the same problem before I put them on. My sled will start an run fine and run perfect for about an hour then sometimes it will get a off idle bog bad enough to stall. The other problem is sled wont start after I shut it off until it cools down about a 1/2hr, or it will start but barely run around 12-1600 rpm as soon as the throttle is opened it immediatly dies. If I unplug the coolant temp sensor all problems are gone the sled will start and run fine. I got a coolant temp on order just want to get some other ideas, already replaced TPS, checked all wiring everywhere at least 4 times tore the whole sled apart checking wiring, unhooked throttle safety switch, injectors check good, all stator coils check good, fuel pressure holds at 46psi gauge is in site at all times. My AFR gauge goes way lean when this problem happens, still have spark.
Anybody got any suggestions it sucks throwing parts at a sled gets expensive in a hurry.
Thanks
Robert
Anybody got any suggestions it sucks throwing parts at a sled gets expensive in a hurry.
Thanks
Robert