hi all i have a my 99 uk turbo and after purchase i found that the engine idles @ around 1'000,(normal i think)
But pull up at lights or roundabout 10 yrds later and oh dear revs drop engine almost stalls.

this is an intermittent problem but the local dealer cant find anything wrong????

any ideas anyone????

it might help to say i am not mechanicly minded though i am fully qualified auto electrician.

thanks people.

 

sticky Idle Speed Control Valve ( can be cleaned out ) is guess #1

MAF is possible (especially on a 99 ) but you would likely see a yo-yo idle .

Steve

 

thanks the revs do drop and raise irratically when at idle.

so how much if a new MAF? and where can i find idle controll valve?

sounds stupid but it's my first scooby.

thanks

 

Ah , there you go , yoyo idle . Your MAF is likely to be shagged .

New maf is £70 from your local dealer.

ask for a "22794AA010 Meter CP-air flow"

You'll need a security torx bit to get the old one out. ( it's located in the tube between the air box and the engine ). 5 minute job (really)

Drive it like an old lady until you swap it.


Steve

 

You can ping off the security tab on the Star/Torx hex bolt with a small screwdriver, then use a normal Star/Torx tool

 

Hi,

Make sure when you order the MAF that you just ask for the censor otherwise you will end up with the whole unit and that will cost you aboiut £300 !!!!!

 

thanks guys i have contacted scooby dealer and it is covered by warranty so they are changing it tuesday.

thanks very much for all your help.

 

.....or it could be your lambda sensor

 

whats a lambada sensor?????

 

Sits in downpipe, essential for optimum catalyst efficiency when idling or at cruise. Causes the same idle hunting when on the way out.

 

can this lambda sensor be cleaned ????
or does it have to be replaced?
if replaced how much

 

About 130quid . Looks like a spark plug with 2 heater wires and a signal.

Signal should read .9v+ at WOT if it's ok.

How many miles on your motor ?

Steve

 

69000 only had it a month so still under warranty!

just had prodrive backbox fitted (£478) apart from that it's still standard.

 

FFS

You'll be glad you found scoobynet and you can now get things at realistic prices ...

.. you have been acutely rippied off

 

@ 69k that lambda is going to be tired too ( assuming it's original )

S

 

i know i was quoted £370 for backbox and then they charged me £478 i did complain and so they dropped labour rate from £65 ph to £55 ph.

still didnt relieve the pain in the wallet.

i will get them to check lambda sensor when it's in tuesday.

thanks guys

 

I took my car in to scooby dealer today and they changed the MAF sensor (hoooray!!!)
~But not all's well after washing and a vacum testdrive and 1hr 25mins they realised oh no it's not the MAF at fault.
After all the time i spent waiting for the repair it was the lambda sensor....
they only changed it cause i told them about your advise on scoobynet.

I thought they were supposed to have diagnostic gear????

finally after 2 & a half hrs my car runs like it was supposed to.

And all covered by warranty.

Thanks guys my car would be runing like a bag of poo if it wasnt for great advice from scoobynet members.

 

Still under warranty? Thats lucky

 

it came with 12mths when i bought it just over a month ago!!!

they have been really good at the garage.
dont know how long that will last though....