hunting idle ........ and 'tick tick tick'

philg · Post by **philg** » Sun Apr 22, 2007 11:51 am

yes hunting is when its revs up and drops around whatever revs it should be at, but cant sit constantly at the correct revs. mines only does it when the car is idling. That suggests that one of the sensors is dodgy.... or.... theres is air leaking into the system between the throttle body and engine head, a sensor is picking up on this and trying to supply fuel to compensate for the extra air, but just cant get it right.

I'm still a bit wary(sp) of whether an injector could be making this ticking noise. It sounds more like a valve/lifter clicking against its seat. Do these cars have hydraulic lifters does anyone know?

mjb · Post by **mjb** » Sun Apr 22, 2007 12:16 pm

philg wrote:I'm still a bit wary(sp) of whether an injector could be making this ticking noise.

Hence why I suggested touching them to feel if it is or not.

dmcwe · Post by **dmcwe** » Sun Apr 22, 2007 4:51 pm

mines a 2.0 ltr 1998 and has had a tick for ages, it`s more annoying than anything. I also had the revs "hunting" some time ago, that was the stepper motor.

Benner · Post by **Benner** » Sun Apr 22, 2007 5:03 pm

Have just looked today and mine seems to do the same thing!!

I knew I had a faint tapping, but after reading this I thought I'd look at my rev counter and it seems to fluctuate just above and below 1000rpm. This was not long after start up though and I forgot to look again at the end of my journey, so it may have just been a start up thing.

philg, you say yours does it. How much does it fluctuate by?

philg · Post by **philg** » Sun Apr 22, 2007 5:36 pm

yea mine is the same benner, just either side of 1000rpm.

so is the consensous(sp) that a new stepper motor will sort this? what sorta £££ do them things cost.

Benner · Post by **Benner** » Sun Apr 22, 2007 6:04 pm

Have just gone out and had another look and it's not as bad as I thought it was. It's probably always done it and they may all do it.

However, on close inspection I have noticed a hole in my rear box

so could this be anything to do with it? Don't really know a lot about pressures.

Benner · Post by **Benner** » Mon Apr 23, 2007 5:18 pm

Have done 3 journeys today and it hasn't done it so it probably was just where I had started it.

This is obviously a common thing and I would also be interested in the cost of the stepper motor if anyone knows?

Captain Jack · Post by **Captain Jack** » Mon Apr 23, 2007 5:54 pm

If you lot had the mighty diesels, you'd have none of the hunting. It would sit rock solid on 850rpm

I don't know anything about petrols, but I know my housemate's Rover

does it and my ex-boss's Skyline... all "hunt" around, especially when cold.

Pyros6546 · Post by **Pyros6546** » Mon Apr 23, 2007 6:20 pm

mines fine never does it 2.0l glx 16v
as long as its not causing any problems
then does it really matter try cleaning
the stepper motor.

Benner · Post by **Benner** » Mon Apr 23, 2007 6:23 pm

Dont think it matters at all. As long as it doesn't fluctuate too much and cause the revs to drop so low that it stalls.

Yes have had a read and it is suggested to clean the stepper.

darrenwall · Post by **darrenwall** » Mon Apr 23, 2007 8:45 pm

sometimes the revs " hunt " up and down if you have got an air leak , like a blowing manifold gasket or something round there , and as for the ticking that should be just the injectors opening and closing , try some fuel cleaner in your tank to see if that quietens them down

Pyros6546 · Post by **Pyros6546** » Mon Apr 23, 2007 10:57 pm

check the sensors in the engine
coolant and rpm sensor either
one can cause problems 1 of
them could have an intermittent
fault

406oc.co.uk

hunting idle ........ and 'tick tick tick'

tick,tick,tick