hsmac

is b2s1 the same foot pounds?

is there somewhere that lists proper torque specs for any and everything? would be so useful.

salimshah

Factory service manual has them. It has copy rights, so CL rules win out.

I think the torque should be the same.

Salim

hsmac

wow... i didn't know there was a service manual, this is pretty awesome. so is it basically like how you guys are writing up these DIY's? What are the advantages/disadvantages? i'd like to/need to do more work on my car so i am very interested in it. only thing is it's rather pricey.

salimshah

A good DIY is when a member writes about his/her experience. There are short cuts and other tips that are shared.

I recently added DIY to replace oil pan gasket on my son's SC400. Service manual calls for removing the engine.

Then there are bad advice in DIYs and wrong diagnoses that are posted on the Forum. Believe me, I have a fair share of those (bad judgment are proportional to number of posts ).

Service manuals are a must for DIYer. They were my first purchase from the parts store. Incidentally every product has service manual.

Salim

hsmac

can you please share the torque setting, salim?

hsmac

just changed my b2s1 sensor. took half an hour or so but could have done it faster had i not tried using light duty tools first. i had rented both the sensor wrench and sensor sockets and was glad i did. i had a feeling the wrench would be insufficient based on my experience over the past few months. once i got the ratcheting torque wrench on there (i tried a breaker bar first but there wasn't enough room to turn), the sensor came loose. reset the cel light and it hasn't come back on.

thanks to OP and everyone who contributed here!

salimshah

31 Lb-ft

Salim

hsmac

right. you already answered that a few days ago. for some reason i forgot or thought it was for something else. thanks again.

beachlover

1) love Columbo, have the complete collection on dvd.
2) found a great way to disconnect the bank 1 sensor without a partner. Put in from the top (engine compartment) the handle from a trolley jack that has a nub on the end. It fits perfectly so that when I turn it, the nub clicks the electrical connector open, and i can leave it there keeping it open. Then go underneath and pull out the sensor electrical plug end, with the room for one hand that Lexus provided, ha ha. I am sure a foot long 1/2 inch dowel or piece of 1/2 copper pipe with a screw put in it could accomplish the same.

Anyways, so we can measure the resistance across the black wires. But what can we do to test the white and blue wires? And what are they for anyways? Maybe some temp sensing?

rosen71

Regarding the A/F sensors, I found very interesting thing. I Italy, when the sensors are gone, more and more people do not bother to change them, but using this device:

















This is an emulator, and the manufacturer claims that it is not affecting the work of ECU for others.


I even have one on my car (the one in the picture), but didn't know what is that and had it disconnected.
When spoke to a friend who is installing Gas fuel systems on cars, he said that it is a necessary device in order the engine to operate properly on alternative fuel.
He also said that it is a normal procedure to be used in Italy, because it costs around 85 Euro, and compared to the cost of 2 A/F sensors is worth the money.

carguy07

I have never heard of using an emulator to replace an Air Fuel sensor. I thought these were just to replace the O2 sensor that is after a cat (when the cats have been replaced or are aftermarket and don't play nice). The after cat ones just throw a CEL if the exhaust is not clean enough. The A/F sensors actually control the mixture. Seems like you would be rich or lean all the time without the A/F sensors working.

beachlover

I can see this possibly being neccessary for alternative fuels. But I will stick with sensors, theory being the rx can adjust itself to changing conditions. Where I think an emulator is just running a fixed and programmed set of conditions that probably exists 95% of the time.

Much like I wouldn't use a "full gas gauge" emulator, if that existed.

river

Is the AF sensor and o2 sensor samething? How many AF sensors on 2000 RX300?
Thanks

carguy07

A/F sensor is a fancy (wide band) O2 sensor. The two before the cats are A/F sensors. The one that is after the cats is an O2 sensor.

river

although I dont have any CEL or any issues except its fuel consumption. Can I change 2 AF sensors to improve fuel economy?