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[mark.adams]

Is there any way to test if the cat is working apart from the emissions test?

[espen22]

What are you interested in testing it for, if you dont want to test if it cleans the emissions?
You can take it off and look at it, to check that its not having any visual damage, or that its clogged.

[mark.adams]

My car failed the emissions test on its MOT on both petrol and LPG, the LPG is a mixer system so doesn't use injectors i am trying to work out what is common to both systems that could cause it to fail on emissions, both CO2 and HC were out of limits.

[mathewst]

Espen what do you mean if the cat is clogged?
What can clogg it?
And it this can happen anyway of cleaning it?

[mark.adams]

what else affects emissions?

[zirk]

My car failed the emissions test on its MOT on both petrol and LPG, the LPG is a mixer system so doesn't use injectors i am trying to work out what is common to both systems that could cause it to fail on emissions, both CO2 and HC were out of limits.

I would think the Cats would have little effect on the LPG, the Tester would normally run different emission Test for Gas (lower spec)?, starting to think something else is wrong?,

If the LPG is single point injection (mixed behind the Air Filter) that would only perform correctly once the car is running at the correct tempreture.

[rustym95]

back fireing damages the cat, using cleaning fluids not for use with cat's damages it, hiting the cat damages it( i.e hiting somthing on move), leaving car on long wet grass (engine running) damages cat. there is more but this is just a few.

[JamesV6CDX]

leaving car on long wet grass (engine running) damages cat..

Can't see how?

It's much more likely to set the grass alight, before the cat suffers 

[mark.adams]

So to summarise, for my car to fail emissions on both petrol and LPG, do we think it's unlikely to be the cat and more likely to be something further back up the line?
Live data doesn't give any clues, MAF EGR Fuel Trim all look normal but it must be running too rich...
I am desperate to get this car back on the road but i'm struggling here 

[Abiton]

Is the Coolant Temperature Sensor giving plausible information?

[mark.adams]

Yes, funnily enough that was the first thing we looked for, live data was giving back the right temp when compared to the dash engine temp.

[mark.adams]

Live data as below with engine up to temp.
is the intake air temp looking odd??
It's 11 degrees outside according to the mid.



Measuring blocks information:

Battery Voltage,13.0 V
Main Relay,Active
Fuel Pump Relay,Active
APP Sensor 1 (Accelerator Pedal Position),1.00 V
APP Sensor 2 (Accelerator Pedal Position),0.49 V
Calculated Pedal Position,0 %
TP Sensor 1 (Throttle Position),0.53 V
TP Sensor 2 (Throttle Position),4.49 V
Calculated Throttle Position,4 %
Throttle Position,Idle
Engine Speed,753 RPM
Mass Air Flow Sensor,0.88 V
Mass Air Flow Sensor,11 kg/h
Coolant Temperature,1.48 V
Coolant Temperature,90 °C
Intake Air Temperature,1.20 V
Intake Air Temperature,42 °C
Tank Sensor,5.73 V
Park/Neutral Switch,P - N  0V
A/C Information Switch (Air Conditioning),Inactive
A/C Load Signal (Air Conditioning),Inactive
Brake Switch 1,Inactive
Brake Switch 2,Inactive
Vehicle Speed,0 km/h
Cruise Control Tip Switch,Active
Cruise Control,Inactive
Vehicle Speed in Cruise Control Range,Inactive
EGR Valve (Exhaust-Gas Recirculation),Inactive
EGR Position Command (Exhaust- Gas Recirculation),10 %
EGR Position Feedback (Exhaust Gas Recirculation),0.78 V
Fuel Tank Ventilation Valve,3 %
Knock Control,Inactive
B1S1 O2 Sensor Heater (Bank 1 Sensor 1),Active
B1S1 O2 Sensor (Bank 1 Sensor 1),529 mV
B1S1 Air/Fuel Ratio (Bank 1 Sensor 1),Lean
B1S2 O2 Sensor Heater (Bank 1 Sensor 2),Active
B1S2 O2 Sensor (Bank 1 Sensor 2),235 mV
B1S2 Air/Fuel Ratio (Bank 1 Sensor 2),Lean
O2 Sensor Loop,Closed
B1 Short Term Fuel Trim (Bank 1),0 %
A/C Relay (Air Conditioning),Inactive
A/C Cutoff Mode (Air Conditioning),System OK
Malfunction Indicator (MI),Off
Service Vehicle Soon (SVS) Indicator,Off
Engine Speed,753 RPM
Desired Idle Speed,750 RPM
Idle Speed Offset,Inactive
Vehicle Acceleration,0.0 m/s2
Ignition Dwell Angle,2.2 ms
Injector Time,3.0 ms
Ignition Spark Angle,6.7 °CA
B1 Knock Sensor Signal (Bank 1),0.5 V
Ignition Retard Knock Control Cyl. 1,0 °CA
Ignition Retard Knock Control Cyl. 2,0 °CA
Ignition Retard Knock Control Cyl. 3,0 °CA
Ignition Retard Knock Control Cyl. 4,0 °CA
Relative Engine Load,-5 %
Normal Engine Operating Temperature,Active
ETC Limp Home Mode (Electronic Throttle Control),Inactive
Electronic Throttle Control Learn Counter,0
Fuel Tank Ventilation Valve,Inactive

[patropi]

how to change the downpipe (cat converter) on 2.0 omega?

[mark.adams]

Can anyone help me??