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Old 12-11-2004   #1
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cheap lambda sensor ????

Hey all !!

I need to replace the lambda sensor on me wee seicento - anybody know I can get one cheap without going to FIAT who ould charge me £44 ??

Also, am I correct in saying that if I replace the mid-pipe/cat section of my exhaust, then the sensor I had to take off and reinstall was the lambda sensor ?? If so, then although my garage says their is a fault with the sensor, do you guys think it is worth checking how tight the sensor is after driving a few hundred miles ???

The problem I am experiencing is that the car starts reluctantly and shudders (as if on 3 cylinders) for a while until it gets up to temperature, then seems OK - oddly enough when I come to a halt after the 5 mile drive home, when idling is seems a bit rough again !!

Any ideas or suggestions from you lovely people out there would make a battle-weary siecento fixer a happy wee laddy !!
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Old 12-11-2004   #2
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Re: cheap lambda sensor ????

£44 sounds good to me, a genuine bosch one costs about £70 from lambdasensor.com and that means you gotta fit it yourself.

The lambda sensor is located on the exhaust downpipe, take a look from underneath the bumper and there will be a something like a sparkplug but a bit bigger sticking out the the exhaust on the curve with a wire coming out of the back of it.

The symptoms you describe arent what happened when mine went. Initially the injector light came on when i was going down-hill, then the car would lurch quite badly sometimes. The fuel consumption went through the roof too.

If its running rough, have you checked your plugs and leads??
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Old 12-11-2004   #3
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Re: cheap lambda sensor ????

Hey Matt,

thanks for the response....

The car is running, and it has just had a moderate service - new plugs, oil filter, air filter, oil change, tuning and diagnostics etc...

So I have a funny feeling that the sensor may have worked off a bit - I have not noticed a change in fuel consump. but I have not used the car much !!

thanks again
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Old 12-11-2004   #4
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Re: cheap lambda sensor ????

uh oh... is it using any water? The misfiring from cold sounds like a head gasket fail.
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Old 12-11-2004   #5
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Re: cheap lambda sensor ????

Oh yeah, now you mention it, mine shuddered rally badly when the head gasket went and it had a bad rattle like the exhaust was going to fall off.
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Old 13-11-2004   #6
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Re: cheap lambda sensor ????

Cento_cursed, welcome to the world of short-ar5e Italian buzz-boxes...

I have a spare sensor which came with a replacement engine - the multiplug was cut off by the muppet who took the engine out but you can have it for £cheap+postage?

The head gasket diagnosis sounds about right too - have you checked this yet?
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Old 14-11-2004   #7
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Re: cheap lambda sensor ????

Genuine Bosch Lambda Sensors

Suitable For - Fiat

Typical Fitments:-
Cinquecento 1992 on
Punto 55, 60, 70 1993 on
Bosch No: 0 258 003 222


£64.63 [img]pic/buy.gif[/img]

from www.tuneparts.co.uk
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