Gti_Jamo 10 Posted April 5, 2014 Ok so just fitted a Rallye 1H engine in my Corrado to replace the PG and now that it's running I can't seem to sort out this issue. The engine is timed correctly as is the ignition timing. I can set the emmisions on idle via the CO pot adjustment at 0.3% but as soon as the blue temp sensor is reconnected it rises above 10% 'and eventually of the scale. Lots of unburned fuel / black smoke from the exhaust. Have tried another temp switch but still the same. Disconnecting the lambda makes no difference but am getting just short of 12v at the multiplug but would a failed lambda cause my symptoms? Also the ecu is getting sufficient voltage also. I'm sure I can figure it out eventually but any pointers will be much appreciated. I don't have Bentley but instead various other books and printouts with mostly conflicting info. Cheers. Quote Share this post Link to post Share on other sites
owen g60 10 Posted April 5, 2014 Check the idle switch is closing fully at idle. I had the same issue last mot, turned out the switch wasn't engaging ended up having to tweak the switch/bracket slightly to get it to work Quote Share this post Link to post Share on other sites
Gti_Jamo 10 Posted April 5, 2014 Cool i'll have a look at that tomorrow mate cheers. Quote Share this post Link to post Share on other sites
