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Old 01-07-2007   #1
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Punto MK2 Lambda Sensor

Need to replace it as wires got pulled out and bent the sensor when we hit some low ground

Managed to resolder wires but engine management light stays on so looks like the sensor is fcuk'd

Will the engine management system need a reset or will fitting the new sensor reset the light?

Were's the best place to get a replacement Lambda Sensor?
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Old 02-07-2007   #2
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Re: Punto MK2 Lambda Sensor

The code needs to be deleted, your sensor may well be working.

If you are in London and go to ace cafe meet (monthly), let me know before hand and I will bring my equipment to do this for you.
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Old 02-07-2007   #3
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Re: Punto MK2 Lambda Sensor

Quote Originally Posted by Lowtechguy View Post
The code needs to be deleted, your sensor may well be working.
will post a pic of it to show why I think it's fcuk'd

Quote Originally Posted by Lowtechguy View Post
If you are in London and go to ace cafe meet (monthly), let me know before hand and I will bring my equipment to do this for you.
Thanx for the offer but won't be able to take it up. I live in Billingham which is close to Middlesbrough in the North East
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Old 02-07-2007   #4
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Re: Punto MK2 Lambda Sensor

Well fiat will charge you 30mins labour. So about 30-40?
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Old 02-07-2007   #5
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Re: Punto MK2 Lambda Sensor

Fairly easy to change the lambda sensor yourself; you will need a split socket but a long socket won't fit; draper do a thin socket set with an offset 3/8 drive 17mm; also see http://www.lambdasensor.com/
ps tighten slightly before trying to undo it and coat threads with graphite grease (usually suppllied with sensor)
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Old 03-07-2007   #6
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Re: Punto MK2 Lambda Sensor

Quote Originally Posted by radio_car_racer View Post
will post a pic of it to show why I think it's fcuk'd
here's a pic

had the sensor out to resolder wires. Haven't recovered them as I wanted to see if it was working OK, but it doesn't

anyway I can check the item @ home?

Can get a new 'copy' lambda sensor for under £40. Are they OK or is it best to go for Fiat item @ around £70 ish?
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Old 03-07-2007   #7
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Re: Punto MK2 Lambda Sensor

4 wire lambda is all you need (they are all the same), however non fiat ones dont have the plug to attach to the loom.

You can buy a new plug from ebay "4 wire amp superseal" or splice into the old plug and use that.
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Old 03-07-2007   #8
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Re: Punto MK2 Lambda Sensor

Quote Originally Posted by Lowtechguy View Post
4 wire lambda is all you need (they are all the same), however non fiat ones dont have the plug to attach to the loom.

You can buy a new plug from ebay "4 wire amp superseal" or splice into the old plug and use that.

I'll have a look on ebay but will probably just splice and tape it all up.
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Old 03-07-2007   #9
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Re: Punto MK2 Lambda Sensor

Quote Originally Posted by radio_car_racer View Post
I'll have a look on ebay but will probably just splice and tape it all up.
heat shink it otherwise dirt will corrode your solder in no time.
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Old 04-07-2007   #10
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Re: Punto MK2 Lambda Sensor

if its the usual one 46751082 i can do it for £53 genuine Fiat!
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Old 04-07-2007   #11
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Re: Punto MK2 Lambda Sensor

universal ebay ones are sometimes a tenner though...
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Old 08-07-2007   #12
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Re: Punto MK2 Lambda Sensor

replacement sensor now fitted & EML reset on it was installed
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