Technical cheap lambda sensor ????

[cento_cursed]

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 !! :bang:

 

[littleyellowcar]

£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??

 

[cento_cursed]

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

 

[HP]

uh oh... is it using any water? The misfiring from cold sounds like a head gasket fail.

 

[littleyellowcar]

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.

 

[cinqsandminis]

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?

 

[imola_fowkes]

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

from www.tuneparts.co.uk