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Discussion Starter #1
Hi Alfa lovers,

I would really appreciated some help with my beloved 156 v6.

She won't move right now just a slight purr I suppose the sensor has completely failed.
For about 2 weeks now the pedal has had a delayed reaction when being pressed.
It's as if it's trying to catch up but is 3 seconds behind the pedal.

But now it's gone completely and when the accelerator is pressed there's just a slight increase in revs but hardly more than idle.

So I bought a second hand pedal sensor from Auto Lusso for a one-er delivered.

Bosch P/N: 0 280 752 004 for a 156 v6 2.5 '98 R reg.

Could you please give any advise or links to advice as the cable goes under the dash to some weird place behind the glove box.

Of course it's easier to have a longer cable on the sensor than a connector right by the pedal.

If any one has some pointers if they've done it themselves I would be really over the moon.

Really.

I'm pinning for my 156.
 

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sensor error usually means poor connection not potentiometer .................behind the glovebox ....un plug it white connector fron accelerator and use contact cleaner and plug back in and see if it sorts it
 

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Discussion Starter #3
Thanks for replying so quickly.

Ha... just bought one never mind, I'll try it first and see if a good clean won't sort it.
If it doesn't I'll replace the whole thing.
Although something tells me it's slightly more than a bad connector.
But we'll see.

Cheers
 

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Thanks for replying so quickly.

Ha... just bought one never mind, I'll try it first and see if a good clean won't sort it.
If it doesn't I'll replace the whole thing.
Although something tells me it's slightly more than a bad connector.
But we'll see.

Cheers
then do throttle reset
 

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Discussion Starter #5
Ok will do.

I've had a quick go at taking the glove box out but got as far as taking off the carpet to the right of the ECU.

Now I can see loads of wires and connectors but not the one for the pedal sensor.

Is the connector for the pedal sensor directly behind the glove box.

If so how do you take out the glove box.

Cheers.
 

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Discussion Starter #6
I managed to remove the glove box without breaking too much of it...

Found the connector cleaned it and reset with the 90 second reset palava.

It worked.

I'm over joyed, however there's a slight mis-fire and pulling back under full acceleration.

I just had the a new Bosch lambda sensor fitted - could this be the cause...

Veloce's of East Barnet fitted it as my mechanic was away for Xmas.

All the fault lights have cleared and it does feel okay but under fully welly it's not entirerly happy.

Many thanks
 

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I managed to remove the glove box without breaking too much of it...

Found the connector cleaned it and reset with the 90 second reset palava.

It worked.

I'm over joyed, however there's a slight mis-fire and pulling back under full acceleration.

I just had the a new Bosch lambda sensor fitted - could this be the cause...

Veloce's of East Barnet fitted it as my mechanic was away for Xmas.

All the fault lights have cleared and it does feel okay but under fully welly it's not entirerly happy.

Many thanks
full throttle wont be lambda as it goes open loop and just reads off MAF ..unplug your MAF and have a drive and see if it doesnt misfire and you gained your power back you missed

did you do throttle reset ?
 

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Discussion Starter #9
Hi davealfa11,

The error code for lamdba sensor and pedal position sensor came up on the ECU.

It does seem better when I pull out the MAF connector although it's fluffy on the lower part of the rev range.

More power and less hesitation higher up the revs.

The MAF was changed around 5 months ago, it's a Vauxhall part but the Bosch part number is the same.
I just unscrewed the sensor and transferred it to the Alfa's MAF tube.

Also when the car's cold first thing in the morning it back-fires, pulls back and is unhappy until the engine warms up.

I'm at a complete loss as to what's going on.


I've reset the throttle pot again.

Cheers
 

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Discussion Starter #10
I've just checked the MAF p/n's and I've got a 0281002180 installed as someone on a previous thread said that would be ok in a V6.

However the original p/n is 0280217531 are these 2 parts compatible.
 
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