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mkc2bad · 05-10-2011, 07:37 AM

Thanks for the replies guys.
I took the car to a mechanic today and he kindly plugged his diag. computer in...... although the light is not on, a fault is coming up as the o2 sensor.

I've spent a good hour checking all the connections, unplugging and replugging tubes back in and they are all def. in ok.

I didn't replace the J tube as my car has a slightly newer setup with the "Y" peice. however there is a rubbber hose that feeds off of this to the air intake somewhere, while the other peice of the Y has a flexible plastic bit that goes to the AOS.

I didn't notice loads of smoke, but the squeaking was very prominent beefore.... Now that I've replaced the AOS, the car emitts a very slight squeaking (sounds liek a belt still) but only once it is warm.

I guess I'll have to change the o2 sensor - does it sound as if it would be the likely cause? I can't help but think that the squeaking noise is connected to the AOS/vacuum leak somewhere?

05-10-2011, 07:37 AM	#5
mkc2bad Registered User Join Date: May 2010 Location: London Posts: 6	Thanks for the replies guys. I took the car to a mechanic today and he kindly plugged his diag. computer in...... although the light is not on, a fault is coming up as the o2 sensor. I've spent a good hour checking all the connections, unplugging and replugging tubes back in and they are all def. in ok. I didn't replace the J tube as my car has a slightly newer setup with the "Y" peice. however there is a rubbber hose that feeds off of this to the air intake somewhere, while the other peice of the Y has a flexible plastic bit that goes to the AOS. I didn't notice loads of smoke, but the squeaking was very prominent beefore.... Now that I've replaced the AOS, the car emitts a very slight squeaking (sounds liek a belt still) but only once it is warm. I guess I'll have to change the o2 sensor - does it sound as if it would be the likely cause? I can't help but think that the squeaking noise is connected to the AOS/vacuum leak somewhere?