It means if you pour water into it, none of it comes out through the filter, so you know it flows very poorly.

Hmm cant seem to find a new O2 sensor for a 94 bonne on gmpartsdirect.com 95 is excluded as well.... welp over to ac delco

ooooo thx mucho

Just checking 'cus the article said so. The correct GM Part # for a 94 Bonneville SSE is 25312184 correct?

Get yurself some MR. Clean and pour it on the engine. Just make sure you cover up the electricals. The alternator, the coil pack and ne other electical components.

After covering up the electircals just pour the MR. Clean any where it may be dirty. Let it set for a few minutes (I let always go about ten minutes), and then hose it off.

One othere thing I found was armour all does a great job on the intake cover.

Oh yeah,

Welcome to the Club :banana:


Bonnevillemac (Tim for short)

Yes that will be the correct Number... If you search the AC delco site you'll see that they will list the AFS75 sensor...

The 94-95-96 bonnies all use this sensor...

The prices and PN's have not been updated in a while.... I may have to work on that... we had some issues in the past with the PN's... We corrected them, but we decided to leave the disclaimer...

By the time you buy it from GMPD shipping an all, should run $43-45 or so totall... Call a couple of dealerships and see what they charge, I have seen a few that were very reasonable... Most arent tho... Good Luck ;)

BTW... When my sensor crapped out on my 95, I was doing 14 mpg in town... The sensor brought it to 19-20... and 28-33 on the road... ;)

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WOW 14??? thats about what my moms durango gets...(shes looking at getting a Toyota Avalon im pushing for a Charger R/T :twisted: :twisted: )

Ya i was just about to order the part but i realized i left my wallet upstairs and im realllll lazy. Ill do it later today lol.

Yeah, the 91 was doing 13mpg when the Bosch O2 Crapped out...

Both cars average 20 mpg all stop and go inner city... Both generally do better than 30+ on the road... ;)

Hope the sensor will help you too ;)

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Ok just ordered the sensor but i forgot to ask about the difficulty in replaceing them is this a half hour job or an afternoon job? And where exatly is it i have a shop manual but its kinda vague...