ph1 172 lambda sensor quiz!!!???

[nathanH]

How many does a Ph1 have?

I have always been told they have 1.

 

[Sy]

1, I changed mine a few months ago

 

[edde]

Some have 2 depends what version you have there a few types of phase 1.

 

[nathanH]

well mine has 2 and i oredered a ph1 decat only to find its an inch to short and only has 1 lambda sensor, sent it back to have it exchanged for a ph2 item, I didnt even know some ph1's have 2. and also there wasnt anything on there site saying to check if it has 1 or 2 lambdas. ordered off ktec btw.

 

[Christopher]

yep, depends on model year mate

 

[mach10]

So if i wanted to purchase this

http://k-tecracing.com/show_product.asp?id=1088&pic=2

Would it fit my 172? ph quick, I STILL dont know if mines a mk1 or mk2 lol

edit: year 2000

 

[16v_jon]

Get under the car and see how many lambda's it has they changed the cat mid production on the phase 1 172

 

[STEVE.M]

Any current Ph1 owners, who presumably are a little more au fait with their cars than the original contributors, know any thing about this?

@Ant1

It`s sort of relevant to this thread

https://www.cliosport.net/threads/n...on-a-clio-2-ph1-2-0-16v.823742/#post-11703240

 

[Ant1]

Early phase 1s have a twin cat so have a pre and post O2 sensor. The PRE is the one that needs changing if fooked.

Later phase 1s have same cat with one sensor.

Twin sensor

Single sensor

 

[Ant1]

And yes a knackered Lambda will cause hesitation and spluttering under acceleration. You can buy them for around £50 on eBay, I use Bosch.

 

[STEVE.M]

Early phase 1s have a twin cat so have a pre and post O2 sensor. The PRE is the one that needs changing if fooked.

Later phase 1s have same cat with one sensor.

Twin sensor

View attachment 1402483

Single sensor

View attachment 1402484

Thanks for replying.

I would have expected early to be single lambda and the later ones twin, but please take a look at the thread I linked and see if you can help.

 

[Ant1]

All mine are twins, two of them 2000 and the other 2001.

The exclusive had similar issues to you, hesitation under load, poor mpg, and a rough idle. Changed it and all was well again.

 

[Coops Mk1]

Early are single later are twin