Thread: V8i Idling Issue

I have found in the past that the stepper cleaning only works for so long, best to just replace it if you can afford it

The other thing that causes bad idle on mine is that the connector on the MAF meter works it's why lose sometimes, and i just have to bend the pins up a little and that seems to fix it for a while. Also make sure the hoses that come off the MAF are tight.

would it make it sound like it is running on 6-7 cylinders if the stepper motor is dirty or u/s? and would it hesitate to rev at all?

Originally Posted by eddie_V8i

would it make it sound like it is running on 6-7 cylinders if the stepper motor is dirty or u/s? and would it hesitate to rev at all?

Not sure of that, sounds more like a sticky valve, but by no means a expert, someone else might time in shortly that knows.... does it disapear after 5-10 minutes ?

nah it doesnt disapear at all, unfortunately i cant have a look at the car at the moment as it is at my gf's property in spencer and im back at home in sydney, when i was at spencer during the week, i called up alto landrover and had a chat with the mechanic, i started the car so he could listen to it over the phone, he initially thought it could of been a sticky valve, but sorta started thinking about the fuel system more.

When i turn the car to the "on" position, i can hear the fuel pump start for the 5 or so seconds, then it switches off. i think the fuel regulator is ok because the bleed valve on the fuel rail on the left bank of the injectors has plenty of pressure in it, (the tyre valve looking thing squirted fuel out when i depressed the valve)

i inspected the spark plugs, they didnt look overly fouled or on the other hand they didnt look like they were pitted or coroded etc..

i inspected the oil, i didnt find any emulsified water (grey milky colour)

i even thought that maybe the firing order was all **** about, but that was fine (firing order is in a clockwise direction right?)


when i started the car, i got my gf to look at the colour of the exaust, when it was about to stall, i tried to give it a few pumps to keep it running, and she told me that it looked like black smoke (unburnt fuel)

the condition of the exuast tip doesnt show any oil build up, just a clean looking black carbon.

hmm i dunno....

When i had my problem i went through and changed everything one by one.First i did new leads and plugs,Another air flow meter(good to have a spare anyway),New dizzy cap and rotor,new thermostat,new coolant temp sensor.
I would start by cleaning the stepper motor and then putting on new leads and plugs.Its always good to do these if you dont know how long they have been on there.Then a new dizzy cap and rotor.Best to buy genuine LR ones when you get the dizzy cap and rotor.The cheap ones are crap.(Believe me i found out the hard way).
If the problem still persists it could be your fuel pump.Check the pressure it is getting from the fuel rail.Should be lots of info on here about it.Hope this helps.
Cheers!

Just had my problem get worse going across down and then I found out why the spark plug lead was loose and now is all good for me but still when I start the engine warm the rev will go up and down 2 to 3 times and then normal.

Your engine revving a little higher at start up is the stepper motor doing that.

Originally Posted by SPROVER

Your engine revving a little higher at start up is the stepper motor doing that.

But 2 or 3 times after warm start up ?