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Model specific boards => Golf mk4 => Topic started by: jnielow on 16 October 2012, 19:46
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Hi All,
I will try and keep this precise,car went in for MOT passed on everything except emissions.Garage kept car tinkered around with it, rev'd it lots and cleaned throttle body(?????) it then passed emissions test and I got MOT. Day later I took car for a drive got it to normal operating temp and noticed it was idling erractically,rev needle all over the place and car kept hunting!. Took it back to garage they tinkered around with it again and concluded that the Maas Air Meter was pooped as car idled good without it plugged in, plugged it back in car idled erractic again!.
Since then I have got a meter on order and hae got myself a fault code reader, ran a test tonite and low and behold fault code central I got the following codes
00520-Mass Air flow sensor
00523-IAT Sensor-temp high -circuit low/IAT Sensor temp low-circuit high??? not sure which one as
00537-Oxygen sensor
00557-?????????????? not sure what this one is-anyone any ideas?.
Am I right in saying (please correct me if not!) that as the Mass Air flow sensor is pooped it has thrown up faults on these other sensors even though they could be working ok or is possible that all 4 sensors have pooped out at the same time??. Would you try to fix by process of elimation ie fit replacement Mass air flow sensor run fault code program again??? Or buy new sensors per the fault codes?
Any help would be welcomed
Thanks
Jason
Also where are these other sensors located? (if fault code 00557 is a sensor!)
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start with the MAF, its not uncommon to get multiple codes
Fit the new MAF and then rescan, see what you get
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just a thing to point out that unplugging the MAF will throw a code anyway, have you erased the codes and started again so to speak. incase some may be stored codes