Steve260E
Active Member
My m103 2.6 has had an idle issue ever since I have owned the car, it always eventually starts but it is a bit touch and go when its really cold outside.
Basically the fuel pump will prime, turn the key and it initially fires for about a second and die, cranking and cranking it will then catch and idle at about 450-500rpm, obviously if you go near Drive or Reverse at this point it will just stall, I have learned to feather the throttle for about 2 minutes and idle it myself at about 1500rpm and once up to a decent temperature the idle will sit comfortably at about 750-800rpm and at this stage it is perfectly drivable.
I have checked the OVP and this seems new, took out the cold start injector and gave it a clean and it seemed all OK, fuel was present in the lines up to it anyway. However the Idle air control valve was disconnected, connected it up and the idle shot up to a constant 1500rpm even when warm, as you can imagine the thing wanted to shoot off in Drive or Reverse so this is not usable.
The problem only exists when cold, when warm it starts up on the button.
Does anyone have any advice as to what I can do to pin point the problem?, since the IACV was disconnected by a previous owner I tend to think that is the problem, the small valve inside stays open by about 5mm when disconnected and when you connect it up with the ignition on the valve will operate and shoot open fully.
Thanks
Basically the fuel pump will prime, turn the key and it initially fires for about a second and die, cranking and cranking it will then catch and idle at about 450-500rpm, obviously if you go near Drive or Reverse at this point it will just stall, I have learned to feather the throttle for about 2 minutes and idle it myself at about 1500rpm and once up to a decent temperature the idle will sit comfortably at about 750-800rpm and at this stage it is perfectly drivable.
I have checked the OVP and this seems new, took out the cold start injector and gave it a clean and it seemed all OK, fuel was present in the lines up to it anyway. However the Idle air control valve was disconnected, connected it up and the idle shot up to a constant 1500rpm even when warm, as you can imagine the thing wanted to shoot off in Drive or Reverse so this is not usable.
The problem only exists when cold, when warm it starts up on the button.
Does anyone have any advice as to what I can do to pin point the problem?, since the IACV was disconnected by a previous owner I tend to think that is the problem, the small valve inside stays open by about 5mm when disconnected and when you connect it up with the ignition on the valve will operate and shoot open fully.
Thanks