Failed emmission test
29 January 2010, 10:57 PM
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Failed emmission test
Hi all
My 2000 turbo MY99 Failed emmission test CO 2.3 all other values correct I was told it may be ecu temp sensor also told it is under intercooler and dump valve return pipe unfortunatly its not there anyone know where it is.
My 2000 turbo MY99 Failed emmission test CO 2.3 all other values correct I was told it may be ecu temp sensor also told it is under intercooler and dump valve return pipe unfortunatly its not there anyone know where it is.
Last edited by joeggbert; 29 January 2010 at 11:27 PM.
30 January 2010, 01:51 AM
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Someone seems to have got their sensors mixed up. It's the knock sensor that's hidden beneath the IC and dumpvalve return pipe.
The coolant temp sensor is underneath the front of the inlet manifold, screwed in to the coolant distribution main behind/beneath the alternator.
However, all that said, does the temp gauge on the dash read normally (i.e. about half way up after five minutes or so of running)? If so you can pretty much forget the coolant temp sensor as a cause of this problem. Earlier cars have separate sensors for the ECU and the dash gauge, so it's possible for the ECU one to go without anything being visibly wrong. Your car has one sensor to supply both, so it's usually reasonably obvious from the temp needle if it's gone.
If the temp reading is normal, likeliest cause for your emissions problem would probably be a knackered catalyst. Take it you don't have a full or partial decat?
The coolant temp sensor is underneath the front of the inlet manifold, screwed in to the coolant distribution main behind/beneath the alternator.
However, all that said, does the temp gauge on the dash read normally (i.e. about half way up after five minutes or so of running)? If so you can pretty much forget the coolant temp sensor as a cause of this problem. Earlier cars have separate sensors for the ECU and the dash gauge, so it's possible for the ECU one to go without anything being visibly wrong. Your car has one sensor to supply both, so it's usually reasonably obvious from the temp needle if it's gone.
If the temp reading is normal, likeliest cause for your emissions problem would probably be a knackered catalyst. Take it you don't have a full or partial decat?
30 January 2010, 10:37 AM
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No decat.Temp gauge reading correct.I bought a temp sensor from a breakers it came on an ali coolant pipe with the gauge sensor as well as you said when i looked at mine no sensors also fuel consumption high getting 50 miles less than normal from a tank full.tried an ecu reset check engine light not flashing steady 3 long flashes 2 short
Last edited by joeggbert; 30 January 2010 at 12:27 PM.
30 January 2010, 12:55 PM
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That all makes sense. Code 32 is the O2 sensor - so your car will have been running unduly rich, explaining both the CO and the poor fuel consumption. Surprised it didn't fail the MOT on Lambda too in that case.
Replace the O2 sensor, run another ECU reset and all should be sorted.
Replace the O2 sensor, run another ECU reset and all should be sorted.
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