Hi,
This my first post here hoping to get help.
My problem can be classified as cold start problem.
When i startup my bora (1.6 SR.2005,AVU Engine) in the morning the engine rattles untill the car warm up ,then it ran fine.
so i decided to order vag com interface to scan ECU for fault codes
I found these faults stored in ECU
16500 - Engine Coolant Temp. Sensor (G62): Implausible Signal
P0116 - 35-10 - - - Intermittent
16514 - Oxygen (Lambda) Sensor B1 S1: Malfunction in Circuit
P0130 - 35-00 - -
16687 - Cylinder 3: Misfire Detected
P0303 - 35-10 - - - Intermittent
16688 - Cylinder 4: Misfire Detected
P0304 - 35-10 - - - Intermittent
16684 - Random/Multiple Cylinder Misfire Detected
P0300 - 35-10 - - - Intermittent
16685 - Cylinder 1: Misfire Detected
P0301 - 35-10 - - - Intermittent
I replaced CTS,spark plugs and ignition wire set ,the these faults didn't come back again except lambada sensor.
I thought that i have bad MAF sensor,first i cleaned it but nothing except a little improvement in acceleration.
I disconnected it and drove the car, i found a bit better performance
i decided to clear codes and disconnect the MAF and drove the car for a day.
i found these codes
16486 - Mass Air Flow Sensor (G70): Signal too Low
P0102 - 35-10 - - - Intermittent
16497 - Intake Air Temp. Sensor (G42): Signal too High
P0113 - 35-10 - - - Intermittent
That's because of disconnection for MAF,but i wondered that Lambada sensor didn't come back again as usual.
by the way when i generate readiness to my ecu,all test passed eveb lambada sensor regulation ,the pops up again
any ideas
Waiting for help as soon as possible