Racepak O2 sensor
 

Racepak O2 sensor: Is there a replacement for the O2 sensor that comes with a clip to hold the two connectors together. Other than going back to Racepak.Actually just need the clip which I broke.

Re: Racepak O2 sensor
 

I ran into the same problem, old stand by zip ties was the cure.

Re: Racepak O2 sensor
 

Yeah that's what on it now................not happy with that

Re: Racepak O2 sensor
 

Usually the brand, and a number on the Old one. I found NAPA Auto Parts, if you find an experienced parts guy, can take that info and find you the same exact sensor. Not likely Racepak changed the connector on the sensor.

Re: Racepak O2 sensor
 

Back when I swapped my FAST stand alone O2 setup for a Racepak unit, i'm pretty sure both used the same connectors, although I don't remember plugging each in to see.

Here's the O2 sensor...
http://www.lsxtune.com/shop/product_...roducts_id/534

Here's it's mating connector...
http://www.lsxtune.com/shop/product_...roducts_id/678


The whole mating pigtail...
http://www.lsxtune.com/shop/product_...roducts_id/695

Grant

Re: Racepak O2 sensor
 

Also, all Wideband sensors don't read the same. Learned that on my dyno. I bought a new one, and found it showed leaner air/fuel numbers than the old one. I ordered yet another, put my pickup on the dyno, and made 2 pulls, plugged in the new one, A/F went from 13.0-1 to 13.25-1. Put the old sensor back in, 13.0-1. Ordered yet another new sensor. Back to 13.0-1. Tagged the Lean sensor at ".25 Lean", and kept it for a spare. If I had a car in that was not as rich as I expected, I put the spare in to verify the sensor I was using was not indicating a false lean condition. Leaded fuel does degrade O2 sensors. I always keep a known good spare for my FAST system on my race car. If you buy a spare, I would back-to-back test them to verify they agree. That is why you cannot just tell a guy to tune his car for a given magic number A/F ratio. His sensor may not read just like yours. That's why we test, right? Mine does not make the best power at the same air/fuel ratio with all fuels, either.
Always something, right?

Re: Racepak O2 sensor
 

Ed I like how you say "if you can find an experienced parts guy" that in itself is hard to do these days!

Re: Racepak O2 sensor
 

It is. Too many kids doing it now, that think they have it all figured out.
Look for some gray hair. LOL

Re: Racepak O2 sensor
 

Number on sensor 258007018

Re: Racepak O2 sensor
 

Ed,
The part where all fuels don't make the best power at the same A/F ratio is missed by a lot of tuners. Same as the guys that tune with EGT #'s.
I had to shake my head a few times when a customer told me it had to have a certain deg EGT's. If it didn't it wouldn't make power till it did. :eek:

Re: Racepak O2 sensor
 

Appears to be a Bosch LSU 4.2
Is this what you need?

https://www.milspecwiring.com/LSU-42...IT_p_1079.html

Re: Racepak O2 sensor
 

Yes thank you for all the replies

Re: Racepak O2 sensor
 

I have some old sensors that I can send you the retaining clips off of. They are the gray retaining clips that fold over and lock the 2 ends together......correct?


Eric

Re: Racepak O2 sensor
 

Yes that is correct. Lmk what you want for them and the shipping. Thx Glenn

Re: Racepak O2 sensor
 

How many do you need?


I don't need anything for them. Just send me your address. ericbellbaseballschool@cox.net

Re: Racepak O2 sensor
 

I'm sorry....I just looked and either Racepk or the shop the car was at when I had the it re-wired kept the retaining clips. They had sent the O2's to get checked out by Racepak and I needed 6 new ones. In any case all the retaining clips are gone. I'm really sorry

Re: Racepak O2 sensor
 

Email sent, Thx again

Re: Racepak O2 sensor
 

I'm sorry but I just looked and all the old sensors are missing the retaining clips. I had the car at a chassis shop awhile back to get re-wired and the Racepak checked out. I needed 6 new O2 sensors but I guess either Racepak or the chassis shop keep the retaining clips. It appears other people must break them too. Again....I'm sorry for miss leading you.


Eric

Re: Racepak O2 sensor
 

No problem.....Tu