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[Proz]

take your car out and give it a darn good thrashing bud should clear it !!  

I like the sound of that  

A lot has to be said of that, usually its diesels really, as they clog up with the clouds of smoke some of the older ones make. A darn good trashing does them good, maybe try a tank full of BP Ultimate and give it darn good spanking on the whole tank, and see if that clears it.

Have you replaced the plugs recently? got any oil in the cylinders? I did that  

Had clouds of blue smoke for about 30 seconds!  

It had a service at Vx maybe 5-6 weeks ago but they never mentioned oil in plug wells .... as for fuel would Tesco premium stuff be just as good , there are no BP's for miles around here .... i must admit ive never really given this car a thrashing ...was trying to be gentle with it after my last mig died probly through lack of attention  

[Proz]

Freeze frame data is

TROUB CODE P0420

FUEL SYS1   CL, using H02S

FUEL SYS2 N/A

CALC LOAD (%) 67

COOLANT (F) 183

ST FTRM1 (%) 2.3

LT FTRM1 (%) 11.7

ENGINE SPEED  2041 RPM

VEH SPEED   49 MPH

I/M status

Misfire monitor    ok
Fuel system mon  ok
Comp. Component ok
Catalyst mon    ok
Evap system mon   ok
Oxygen Sens     ok
Oxygen Sens Htr   ok

Dont know if this helps ....  

[feeutfo]

pre cats prone to "collapse"(?) with age, as i understand it.  :-/... but deff. age related. so if you have just had a new cat fitted, that would tend to imply another issue, perhaps??? maybe a lamda/o2 sensor needs changeing, or wireing too it.Or its the original cat and someone is telling porkies...Does the cat look newer?Difficult to tell without a comparison.

Data looks to suggest cat but i have no idea what all of that means and if "o2 sensor ok " means exactly that.... er, wheres Kevin?

[Proz]

When i bought it from the garage they mot'd it and said it failed on emissions and they had to replace the cat .... the downpipe certainly is new but ive not been underneath to look at cat tbh .

[Kevin Wood]

TROUB CODE P0420

Cat Efficiency, as mentioned

FUEL SYS1   CL, using H02S

Closed loop, Heated O2 Sensor

FUEL SYS2 N/A

1/3rd of the engine missing

CALC LOAD (%) 67

Engine Load

COOLANT (F) 183

Coolant at 83 degrees C

ST FTRM1 (%) 2.3

Short term fuel trim

LT FTRM1 (%) 11.7

Long term fuel trim

ENGINE SPEED  2041 RPM

VEH SPEED   49 MPH

I/M status

Misfire monitor    ok
Fuel system mon  ok
Comp. Component ok
Catalyst mon    ok
Evap system mon   ok
Oxygen Sens     ok
Oxygen Sens Htr   ok

Nothing out of the ordinary there. :-/ Litle bit of long term fuel trim but obviously not excessive as it hasn't complained about that. Those look like about the same set of circumstances when mine normally comes on, low revs, accelerating moderately, just coming up to normal operating temperature. I guess that's the point where the ECU decides the cat really ought to be working.

Is the replacement cat an OEM one or pattern? Is there a distinct pre-cat and main cat with both O2 sensors before the main cat? Some cheap pattern parts try to get away with just a single cat which may not heat up fast enough.

At this stage I'd clear it and see if it comes back TBH.

Kevin

[Proz]

TROUB CODE P0420

Cat Efficiency, as mentioned

FUEL SYS1   CL, using H02S

Closed loop, Heated O2 Sensor

FUEL SYS2 N/A

1/3rd of the engine missing

CALC LOAD (%) 67

Engine Load

COOLANT (F) 183

Coolant at 83 degrees C

ST FTRM1 (%) 2.3

Short term fuel trim

LT FTRM1 (%) 11.7

Long term fuel trim

ENGINE SPEED  2041 RPM

VEH SPEED   49 MPH

I/M status

Misfire monitor    ok
Fuel system mon  ok
Comp. Component ok
Catalyst mon    ok
Evap system mon   ok
Oxygen Sens     ok
Oxygen Sens Htr   ok

Nothing out of the ordinary there. :-/ Litle bit of long term fuel trim but obviously not excessive as it hasn't complained about that. Those look like about the same set of circumstances when mine normally comes on, low revs, accelerating moderately, just coming up to normal operating temperature. I guess that's the point where the ECU decides the cat really ought to be working.

Is the replacement cat an OEM one or pattern? Is there a distinct pre-cat and main cat with both O2 sensors before the main cat? Some cheap pattern parts try to get away with just a single cat which may not heat up fast enough.

At this stage I'd clear it and see if it comes back TBH.

Kevin

Yes a third of the engine is missing  .... im not sure what was fitted to be honest .... it wasnt Vx so i'll assume its pattern .... i'll have a good look in the daylight and see what i can see .... cheers  

[Proz]

Ok ....... i cleared the fault last night .... and so far after a drive to and from work its not come back yet  

[Proz]

Mmmmm this code has showed up again today  

[Kevin Wood]

That's about the same as mine. Goes away for a few days then it's back. Thing is, the pre-cat isn't required to meet MOT emissions so it seems stupid to invest in a new one, it's just a pain to put up with the damn light on.

Kevin

[Albatross]

 


Very much with you both there.

[feeutfo]

no receipts in the cars history you can look at and see if the new cat has a warranty...? Any idea which garage did the work? Its usually fairly easy to trace the previous owner via the log book, get the phone number for that address and see if they know who did the work or even better what make of cat you have ? Surely a cat should be warrantyed for a year al least? I'd be on the phone me...

[Proz]

The garage i bought it from replaced the cat 6 months ago ...so i would think it should still have a warranty .... if its the cat thats going i will be in touch with them but if its just one of the lambda's i would try to replace it myself ..... i dont want this light coming on every now and then ... i will add the latest freeze frame data shortly  

[Proz]

Calc load  66.6%
Coolant temp 181 F
ST FTRM 7.8%
LT FTRM  11.7%
ENGINE RPM 2206
VEH SPEED 54

Im getting a little frustrated with this car now after all ive spent on it ...think i have a dodgy brake switch as well as the gear lever wont release sometimes on the brake light check  

[Kevin Wood]

I would investigate the warranty on that cat. If it has failed this quickly there's either an underlying fault that wasn't properly investigated back then, or it was a poor quality cat.

There are separate trouble codes for the O2 sensors, so if one has failed the ECU would probably raise a different trouble code.

Kevin

[Proz]

I would investigate the warranty on that cat. If it has failed this quickly there's either an underlying fault that wasn't properly investigated back then, or it was a poor quality cat.

There are separate trouble codes for the O2 sensors, so if one has failed the ECU would probably raise a different trouble code.

Kevin

So this looks like its the cat thats going ?  Maybe i should sell her on