bandy

When starting my 3.5 v8i from cold it doesn't fast idle at all ? I have to keep my foot on accelerator slightly to keep it going. However once warmed up it ticks over around 550 rpm no problems. I have changed idle control valve and the coolant temperature sensor with no improvement. Is there a another sensor that aids cold starting ? Any ideas would be welcome.

My Discovery appears to misfire ever so slightly when cold but clears once warmed up. Although once warm and at idle and the throttle is blipped it seems to hold back before revs increase. Any ideas ? I have changed plugs,leads,rotor arm,and distibutor cap recently.

So how about the use of Forte fuel treatment to clean injectors etc ? Worthwhile or best to avoid ?

Going to change oil and filter on my 1991 v8i Discovery 130k on the clock. Is it a wise move or not to use the above Flush prior to refilling with new oil ? I've heard of pros and cons for using these.

So a good quality 10w/40 would be ok for this Discovery then with 130k on the clock ?

Discovery 1 3.5 v8i with 130k on the clock. What grade oil would be best to use ? I would have normally used a good quality semi-synthetic 10w/40 however i have had suggestions that i should be looking at 15/w/40 or even a 20w/50 I'd be grateful for any suggestions.

Can anyone tell me the internal diameter of the vacuum hoses for the above please ? Many thanks.

Very helpful. Thanks. I'll have the door cards off in the morning and hunt the adjusters !

Thanks for that. So is there one adjuster that will act on both inner and outer handles ? So the adjuster is located on the actual latch end ?

The brain is now going onto overload !! Having read all the above many thanks to one and all for the help. Roger your post was detailed and very helpful...the only problem being that i have the 3.5i and not the 3.9 ! Has anyone an opinion on the idle control valve listed on e bay (370308360463)as it seems a fraction of the price quoted by my local LR dealer !

Can you explain how to retune the base idle ? Thanks to all for their explanations from a Landy novice !

Horrifyingly expensive ? Looking on flea-bay at item no. 370308360463 it doesn't appear too expensive although uncertain as to the quality !

Ok i'll give it a good clean up although i have seen somewhere on this Forum that cleaning is possibly only a temporary fix ? What would be best to clean with ?

Stepper = idle air control valve,yes ? Is it worth cleaning and checking or preferable to replace with new ? Is it situated on the rear of Plenum Chamber ? Thanks for your help so far.

The etc etc definitely does not include a "sticky stepper" ! I have no idea as to what this is where it is or what it does ! Is there a way of testing or is it just by replacing with a new unit ? Any info would be much appreciated. One other thing i did carry out was to clean up the throttle body which was bogging.