THROTTLE BODY SWAP NO CEL!!!! - Toyota Yaris Forums

sito · 07-08-2010, 05:45 AM

Hi Guys,

I had swapped my 1NZFE chip into the 1ZZFE throttle body but after one day of driving... CEL light up.. error code 0172 (fuel trim too rich bank 1)

I reset my ecu, and drove again... and the next day... the same error code came out....

These two codes came when i was moving off slowly and with air con on.

I swapped the 1ZZFE chip (part number #22030-0D030) back onto the throttle body and there's no CEL till now. But i could feel rpm oscillations when car was slowing down. By adjusting the idling screw, does it helps to remove the oscillations?

Should i stick to 1ZZFE chip or try making the 1NZFE chip works?

Thanks everyone!

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07-08-2010, 05:45 AM	#28
sito Drives: Toyota Join Date: Mar 2010 Location: Singapore Posts: 48	Hi Guys, I had swapped my 1NZFE chip into the 1ZZFE throttle body but after one day of driving... CEL light up.. error code 0172 (fuel trim too rich bank 1) I reset my ecu, and drove again... and the next day... the same error code came out.... These two codes came when i was moving off slowly and with air con on. I swapped the 1ZZFE chip (part number #22030-0D030) back onto the throttle body and there's no CEL till now. But i could feel rpm oscillations when car was slowing down. By adjusting the idling screw, does it helps to remove the oscillations? Should i stick to 1ZZFE chip or try making the 1NZFE chip works? Thanks everyone!