Idling Issues/Hesitation

[Cressidom 0]

I have this problem..with my car when sometimes the throttle is depressed it seems that the 'signal' is not going thru

and there's a hesitation..so will need to rev it up and then release the clutch to get going.

I also got the problem with the 'bouncing' idling..sometime after running a while and shut down and start up later (when still hot)

The rpm jump up and down and in some cases the engine stalls.IF i apply some pedal to 'even' out..then it's ok.

BUT on shuttin off the A/c and idling becomes like a broken exhaust..(boop bup bup etc)...

Thought it was the MAF..swapped a buddies one..and had the same problem. I"Ve been told to check oxy sensor,crank , cam

or throttle switch (TPS ).

Any with advice tips..greatly appreciated.

Cheers

Dom

[jochen 4]

Not sure if your motor has an idle control valve (ICV), but if it does, clean it!

Bet you its gummed up and sticky.

Carb cleaner, de-greaser, petrol etc will clean the guts of it.

No scratching though! keep those surfaces nice and smooth...

[nz320i 0]

yep hes right, and vacumm leaks are a biggy as well i hear. and thermostat engine temp sensor and coolant sensor.

[Cressidom 0]

OK..interesting...

have cleaned out the T/Body..ISCV...about a week ago...still no change...Vacumm leaks maybe..still sorting out thru the usual

places..

Ahh..where's the coolant sensor located - is that the unit in the airbox ?? Thermostat engine temp sensor..hmm..

Ok will check those out as well..

Thanks

Dom

[Cressidom 0]

Hi Did the MODIC check with the diagnostic thingy today...

FAULT code 42 - Mass Air Meter - Fault..

So guess it's that then..time to change the MAF.. >>> what difference will i see when i change it ??

Accelaration ?

Idling ?

Others ??

Cheers

Dom