Rough idle/running and running rich and high emmissions, garage cannot diagnose HELP

[Phil 182]

I have taken my car to MOT today which was already running like a dog - does not idle and keeps cutting out without revving.

Garage failed MOT due to running rich/high emmissions.
They plugged into their diagnosis and could not locate the issue.

I have changed the spark plugs and coil pack....am running out of ideas.

 

[Cookson]

Re: Rough idle/running and running rich and high emmissions, garage cannot diagnose H

Fecked cat/lambda?

 

[Canary172]

Re: Rough idle/running and running rich and high emmissions, garage cannot diagnose H

Fecked cat/lambda?

Pre-cat lambda probably!

 

[Phil 182]

Re: Rough idle/running and running rich and high emmissions, garage cannot diagnose H

just changed the pre-cat lambda....and no luck

I have changed almost everything now....
Temp Sensor
Cam sensor
MAP sensor
Coil pack
Spark Plugs

 

[Phil 182]

Re: Rough idle/running and running rich and high emmissions, garage cannot diagnose H

I just did the fault find thing and got errors "t" and "h"

I reset them and started the car again, and those faults do not come up now !!!
Its still running real bad....im lost for ideas!

 

[Chip-mk1]

Re: Rough idle/running and running rich and high emmissions, garage cannot diagnose H

Possibly a loom fault given the number of things you have already changed.

Anyone near you got an RS Tuner, the diagnostics on those is pretty good.

 

[Phil 182]

Re: Rough idle/running and running rich and high emmissions, garage cannot diagnose H

Not sure...anyone got a diagnostics?
Looks like it will have to go to a renault garage

 

[MicKPM]

Re: Rough idle/running and running rich and high emmissions, garage cannot diagnose H

Pop it in to me, I'll fix the bugger

 

[Phil 182]

Re: Rough idle/running and running rich and high emmissions, garage cannot diagnose H

You are a bit far!!

been to my local dealer today, they suspect its the cam dephaser, does this sound a possibility?

 

[Chip-mk1]

Re: Rough idle/running and running rich and high emmissions, garage cannot diagnose H

You are a bit far!!

been to my local dealer today, they suspect its the cam dephaser, does this sound a possibility?

Unlikely to be the pulley itself, and TBH even the solenoid is unlikely to make it as bad as you are saying, you can normally unplug it and it still run better than that.

Get it plugged into a decent code reader, RS Tuner works well enough for example.

You could spend hundreds on guesses otherwise.

 

[Phil 182]

Re: Rough idle/running and running rich and high emmissions, garage cannot diagnose H

Looking at around £850 to diagnose/replace cam belt and dephaser.........which might not even be the problem!!!!
Time for a new car me thinks....

 

[Chip-mk1]

Re: Rough idle/running and running rich and high emmissions, garage cannot diagnose H

Just stick it on a bloody RS Tuner, even if you have to pay someone off here to lend you one, it will tell you what is wrong with it probably, these ECU's are very good at self diagnostics.

Why are you taking any notice of a garage making random guesses when they clearly dont have even the most basic of equipment required to work on these cars?

 

[Carlv8415]

Re: Rough idle/running and running rich and high emmissions, garage cannot diagnose H

Have you had it plugged into CLIP ?

 

[Phil 182]

Re: Rough idle/running and running rich and high emmissions, garage cannot diagnose H

Yes, it's at the renault garage now and it's not coming up with anything definite. Crazy...

 

[Chip-mk1]

Re: Rough idle/running and running rich and high emmissions, garage cannot diagnose H

Often when you get a load of random symptoms its a corroded loom, me and Dan@SJM changed the one on my other halfs car recently and it sorted out a load of random mismires and silly unconnected fault codes etc.