Hello, been browsing the forums for a while but just registered an account.
I purchased MAC midlengths for my 94 formula and was wondering if I should replace the O2 sensors when I do the install. I am taking a good guess that these sensors have seen every one of the car's 113,000 miles. I'm not sure if I would see an improvement in buying new ones or not. Sooo im asking you guys

I tried doing a search but O2 is too short of a word

 

At 113k, I'd definitely swap in some fresh O2's.

 

I would replace them. Your old ones will probably be such a PITA to get out it would just be easier to buy new ones. Plus i'm sure your car needs them.

 

wow thanks for the fast responses! And I do believe I will follow your advice.

 

oh and where would be a good place to purchase a new pair?

 

Get ACDelco ones.

Jason or Dal are good to get all your GM parts from.

Dal Slabaugh: 877-448-5451
email: lockitup@bright.net
VanDevere Buick/Pontiac/Olds Akron, OH

or

Jason Cromer: 877-726-8295 or 850-243-8826 (direct parts dept ph #)
email: parts@samtaylor.com
Sam Taylor Buick/Cadillac Ft. Walton Beach, FL