Lambda thread size.

21st April 2009, 19:41

Slightly different question to the standard lambda sleeve ones.

to save me spending £18 from GMC what thread size is the lambda sensor, and do I just need a cyclindrical piece of metal like this

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That too me fucking ages. imagine its a cross section with a screw thread.

21st April 2009, 19:56

Meh

plastic bag worked for me

Yeh like youve drawn, tubeular piece with a cap one end, and threaded inside,

Without looking probs near m18... Take it out and check.

21st April 2009, 20:01

Speak to williamsvts, he can make you one a lot cheaper than GMC.

21st April 2009, 20:14

I can make one even cheaper myself

Its already out, its just in the garage lol

21st April 2009, 20:37

its not a standard tap size so you wont have it in your standard tap set. im back at work on monday if you want 1 made.

21st April 2009, 20:38

How much.. and what size is it then

21st April 2009, 20:41

£8, cant remember off the top of my head.
iirc m18 special, not the standard pitch, tap it £50 is you wanna buy 1.

21st April 2009, 20:43

£8 posted?

21st April 2009, 21:30

13mm..

21st April 2009, 21:35

marc I think lady sayer is wanting one from you to btw

21st April 2009, 21:45

I pm'ed you a while back williamsvts asking for one but still haven't had a reply. ?

21st April 2009, 21:47

jsut get some tape ?

21st April 2009, 22:03

Just tape it up?

21st April 2009, 22:08

yer, wrap it in cling film, then some electrical tape, tuck it up out of the way with a cablke tie.

of put it in a film pot, or a pen lid or such like, then just tape it up.

sod buying anything that does such a simple job

21st April 2009, 22:10

that is what I was trying to get at lol. can I just sellotape some bolts together, screw it in and jobs a gooden.

21st April 2009, 22:12

hang on, are you trying to fill the hole in manifold, or find a place to put the secondary sensor ?

21st April 2009, 22:19

Place for the 2nd sensor. I didnt know if it HAD to be screwed into something.

21st April 2009, 22:22

The sensor burns red hot to sense the gasses doesn't it? Tape/ cling film will just melt and make a mess. Put it in a proper metal sleeve and cable tie it to the front of the gearbox.

21st April 2009, 22:22

Quote:

Originally Posted by AlexGreen

I pm'ed you a while back williamsvts asking for one but still haven't had a reply. ?

had alot on, sister died in a car crash last week and havent been to work for a couple weeks. will be back next week.

its not a 13mm thread either.

will get some done next week.

yes. £8 posted.

21st April 2009, 22:23

Quote:

Originally Posted by LeeumH

The sensor burns red hot to sense the gasses doesn't it? Tape/ cling film will just melt and make a mess. Put it in a proper metal sleeve and cable tie it to the front of the gearbox.

yar, for £8 you may aswell get a proper 1 from me

21st April 2009, 22:24

Yeh it glows so i dont fancy wrapping it in cling film and tape.

Ill have to keep an eye out though for any smallish metal cylindrical type objects that could be used.

21st April 2009, 22:24

Quote:

Originally Posted by LeeumH

The sensor burns red hot to sense the gasses doesn't it? Tape/ cling film will just melt and make a mess. Put it in a proper metal sleeve and cable tie it to the front of the gearbox.

lol it only burns hot when its sat inside a 700 degree manifold.

it generates no heat of its own

21st April 2009, 22:28

Quote:

Originally Posted by don55

lol it only burns hot when its sat inside a 700 degree manifold.

it generates no heat of its own

Quoting Wikipedia...

Quote:

The sensors only work effectively when heated to approximately 800 °C (1,500 °F), so most newer lambda probes have heating elements encased in the ceramic to bring the ceramic tip up to temperature quickly when the exhaust is cold.

21st April 2009, 22:31

point taken

but a saxo one doesn't, as i clinged mine up and it was fine.

cars have come along way in 8 years lol

21st April 2009, 23:02

Brad, all saxo primary lambdas have a heating element and get red hot.

As for the secondary one, i'm not so sure. If they have 4 wires then they most likely do have a heater.

21st April 2009, 23:03

What if you plug it in, tie it up, but leave it open? What says it has to be sealed?

Or is it best to like put some metal or some kind around it.

21st April 2009, 23:05

Well it'll set fire to something won't it lol

Edit: can't you put it back into the exhaust?

21st April 2009, 23:05

ok fag i stand corrected.

just remove the fucking thing, i didnt have one for ages, was fine.

21st April 2009, 23:05

but we are talking about secondary ones here

21st April 2009, 23:27

Quote:

Originally Posted by williamsvts

had alot on, sister died in a car crash last week and havent been to work for a couple weeks. will be back next week.

its not a 13mm thread either.

will get some done next week.

yes. £8 posted.

why did a 13mm sump plug fit perfectly into the female thread where my lambda was then?

21st April 2009, 23:30

It is unplugged, but I want rid of my engine management light incase a real problem occurs.

21st April 2009, 23:34

find the impedance of the sensor, then wire a resistor with same resistance at the end,after you have cut the plug off.

or try some tape, let it tick over for a bit, and watch if its set on fire or melts off. easy.

21st April 2009, 23:35

or run the engine and touch it. tape might ruin it if it melts

21st April 2009, 23:36

this might be different with different year vts but i have no cat and both my lambdas in my exhaust and i mt car runs fine and i have no engine management light on

21st April 2009, 23:36

braver than me lol, but yeah its not a hard test.

21st April 2009, 23:39

Well, i aint gona grab it lol.

Just see if there is heat coming off it...

If I had an exhaust with a 2nd lambda space the light would be off, but its disconnected at the minute.

22nd April 2009, 10:11

Quote:

Originally Posted by gouldy87

why did a 13mm sump plug fit perfectly into the female thread where my lambda was then?

i very much doubt, unless after 9 years of engineering i still cant make threads or use taps properly.
a spark plug is 14mm and its bigger than a spark plug.

22nd April 2009, 10:23

Quote:

Originally Posted by williamsvts

its not a standard tap size so you wont have it in your standard tap set. im back at work on monday if you want 1 made.

I'm very keen on one as well mate, if you can knock us one up... I'll collect it in about 3 weeks if that is ok? Just let me know how much you're after

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