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Discussion Starter #1
As the topic suggests, my Petrol 307 SW SE has failed its MOT.

Reasons

1. Exhaust emission carbon monoxide content after 2nd fast idle excessive.

2. Exhaust emission Lambda reading after 2nd fast idle outside specified limits.

CO Limits are : =< 0.3 % Actual value is : 2.83%
HC Limits are : =< 0.97 - 1.03 Actual value is : 0.935


For months now I've had Anti pollution fault.

So I replaced (months before MOT) the :

EGR valve,
Spark Plugs,
Coil Pack,
CAT,
4 x Sparks,
2 x New Lambda sensors,
Pollution Filter (Pollution Control Air Intake Valve),
MAP Sensor ( Intake Air Pressure Sensor ),
Air Temperature Probe,
Pollen Filter,
Air Filter.


The car hesitates - around 2-3 seconds, judders, exhaust pops on occasions.

My OBD shows P0108 - Powertrain
Manifold Absolute Pressure/Barometric Pressure Circuit High Input.

I also went to Peugeot dealership a month ago and they did a diagnostic, results were....

Checked memories for engine management light on the dash. Read memories and found
permanent fault intake manifold pressure sensor signal short circuit to positive or circuit pen need to strip wiring loom and test and go from there.
(to which they want £110 to do)

I'm taking it to a garage on Tuesday to test for a Vacuum Leak.

Any ideas/suggestions would be grateful, thanks.
 

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Registered
Joined
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4,778 Posts
As the topic suggests, my Petrol 307 SW SE has failed its MOT.

Reasons

1. Exhaust emission carbon monoxide content after 2nd fast idle excessive.

2. Exhaust emission Lambda reading after 2nd fast idle outside specified limits.

CO Limits are : =< 0.3 % Actual value is : 2.83%
HC Limits are : =< 0.97 - 1.03 Actual value is : 0.935


For months now I've had Anti pollution fault.

So I replaced (months before MOT) the :

EGR valve,
Spark Plugs,
Coil Pack,
CAT,
4 x Sparks,
2 x New Lambda sensors,
Pollution Filter (Pollution Control Air Intake Valve),
MAP Sensor ( Intake Air Pressure Sensor ),
Air Temperature Probe,
Pollen Filter,
Air Filter.


The car hesitates - around 2-3 seconds, judders, exhaust pops on occasions.

My OBD shows P0108 - Powertrain
Manifold Absolute Pressure/Barometric Pressure Circuit High Input.

I also went to Peugeot dealership a month ago and they did a diagnostic, results were....

Checked memories for engine management light on the dash. Read memories and found
permanent fault intake manifold pressure sensor signal short circuit to positive or circuit pen need to strip wiring loom and test and go from there.
(to which they want £110 to do)

I'm taking it to a garage on Tuesday to test for a Vacuum Leak.

Any ideas/suggestions would be grateful, thanks.
check intake manifold for cracks or leaks
 

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Discussion Starter #3
I took it to the garage and they did a vacuum test and they said it was fine.
Then they tested the map and there was no signal to the MAP, they made their own connection and still no luck.

I then took it to the Peugeot dealer and they tested why the emissions failed and they said there was no signal to the ECU from the MAP and that I need a new ECU... Then they quoted me £900 for a new one.

On their summery sheet they said the cat might not be efficient enough.

Any ideas what I should do next?

The recently purchased cat was from eBay (cringes) a was about £40.

I'm tempted to get a new cat from Eurocarfarts and see what's what ?
 

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Why cringe at an ebay cat ?

EBAY do not sell anything sellers like me sell things ON ebay ebay is a venue not a retailer

At the moment not a very good venue :)

CO at near 3% is too high a vac leak would probably make that better not worse Cat is struggling to cope but the co should not be that high to start with.

Best option is to get someone local with planet and take some readings post up results and let everyone help dealers are not interested in fixing only selling you parts !!
 
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