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Old 09-17-2010, 06:09 AM   #1
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Join Date: Mar 2010
Location: Sussex
Posts: 24
front O2 Sensor location?

Hi folks,

Firstly i have a 99 boxster, My car failed its test on emissions so I changed my o2 sensors, however it has still failed its retest on emissions,

I am aware I only need to replace the front 2 sensors (pre cat) not the post cat sensors (as I am not receiving any error codes)

Stupidly I think I may have replaced the rear ones and left the old front ones in place! can someone kindly post a photo or a diagram showing me where the front sensors are, I plan on swapping them round and hope this remedies the emissions fault.

I am angry with myself as it was a nightmare getting them out, and I needn't have bothered as they are fine, I am hoping I did replace the rear ones now, as if I have replaced the front ones, then there is a more serious issue.

Thanks,

Paul
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