I have an 04 Land Rover Disco II with the 4.6 V8. I have put 3 idle air control valves on it. But it continues to throw that code! Also I have continued miss fires and the bank 1 and 2 O2 sensors are indicating the truck is running lean. I feel this it due to the idle air control valve letting in too much air in the mixture. I have put in new plugs, wires and cores. So all of that is good. When it is started the first time of the day, it will rev up to about 2000 rpms and will bounce up and down for a minute. But when you put it in gear it will drop it down to around 700-800 rpms. But even at idle in park or at a red light, the rpms will still jump up at times to 1100 rpms.
Can anyone out there tell me what can I do to straighten this damn thing out!! I am getting so frustrated. I mean after the first start of the day and it warms up, it runs pretty good accept the occasional jump in rpms at idle to 1100 rpms.
Can anyone out there tell me what can I do to straighten this damn thing out!! I am getting so frustrated. I mean after the first start of the day and it warms up, it runs pretty good accept the occasional jump in rpms at idle to 1100 rpms.