Oxygen Sensors?

[postalc38]

Well, I'm employed again so I'm gonna get into the more "costly" things I was putting off when I was on unemployment. Gonna catch up on bills first, then about a month from now get going on repairs.

She's up to 210K, and before I take it in to get the torque converter fixed, I've been thinking I will change the O2 Sensors and then flush the transmission, as I doubt these have ever been done, or atleast haven't been done in the 40K miles I've had her. The car isn't throwing codes for the O2 sensors, but I've heard they should be replaced after 100K.....so I figure I might as well change them.

Here's my main questions:

Has anyone tried the Bosch OEM Sensors?? The non-universal ones?

On the Autozone website, for the OEM Sensors, it says Left up-stream/Right up-stream.....Now when I get these, which one is the front and which is the back? I'm guessing left is the one up front, but i'd like to be sure first.

[Marc]

You're right......the left is the front & the right is the back.

[ntrenn]

Don't do it. If you're not getting codes, and your fuel mileage is good, new sensors is just throwing money away. I have a truck with 293,000 miles on the original sensors - it's the mileage leader. Astro had 155,000 on the original. The Intrigue has 190,000 on the original. They either work or they fail and as long as they work, I leave well enough alone.

[Marc]

Mar 13, 2010 10:58:04 GMT -6 ntrenn said:

If you're not getting codes, and your fuel mileage is good, new sensors is just throwing money away.

X2!

[Deleted]

repeat after me:

I WILL NOT FLUSH THE TRANNY
I WILL NOT FLUSH THE TRANNY
I WILL NOT FLUSH THE TRANNY!!!!!

I did this, I soon after lost 4th.

DO NOT FLUSH THE TRANNY!

Drain all the old fluid and just refill. I was warned by almost all the classic owners and I didn;t listen and ended up paying the price.

[postalc38]

Alright, looks like I'll skip the O2 Sensors and flush.........Is the only way to drain it a trans pan drop? Or is there a drain plug on it?

I probably shoulda figured if it ain't broke, don't fix it. Plus the money I save skipping out on these gets me closer to fixing my torque converter. Thanks as always guys

[bobsblue95]

I will add to the consensus that if it ain't broke, don't fix it! Plenty of other things on the car you will need the money for

To answer your question though, I have Bosch O2 sensors on my 95... one is OEM style and one is universal. Originally I got the universals because they were cheaper, but after one of them quit working (due to excessive amounts of water in the exhaust) I found the OEM ones were now $10 cheaper than universal.

Also, there isn't any difference between left and right. The AZ website lists them separately but same part #. Don't know about the post-cat sensor as it's not listed, but there's no logical reason for them to use a different type.

[Deleted]

There is a drain plug on the tranny IRMC.

[sall]

I am wanting to switch over to Dexron VI this summer. It is backwards compatible to previous Dexron III and below.

Removing the bottom pan only partially drains the transaxle fluid. The side cover and the torque converter hold the remaining fluid. To drain fluid from the side cover, remove the drain plug in the case after bottom pan removal.

How much fluid is drained out of total capacity after draining torque converter? If I'm not changing out more than 50% perferrably 75% then is it even worth it?

[postalc38]

That's another thing I have to think about. If it is indeed my torque converter causing my big problems, then I'm probably just throwing money away draining it........It's all gonna have to come out of the car anyway.

[ntrenn]

If I remember correctly, when you drain the side cover and drop the pan, you get about 75% of the fluid out of these transmissions. That's enough to make a serious replenishment of the fluid additives. Dexron VI is well liked by my transmission as well as the Rondy, so for the $12 extra it costs for the change, it seems worth it.