Help for saxo_gray

1. ads85 Frequent Poster Joined: May 2011 Bradford on Avon,Nr Bath Posts: 866 '01 astra coupe

   #1 8th August 2011, 18:07

   In response to Gray being away with work today i've taken command of his saxo, need your help identifying this wiring plug that i found not attached to anything!!
   
   His car has failed MOT on emissions and i was wondering if this may have played a part in its downfall. The plug in question is the one in middle of the three with red/pink and green/yellow wires
   
   Its a mk1 1400cc westcoast by the way
   
   
   
   
   
   He has replaced standard air box assembly with k & n filter, but there's no apparent wiring on original
   
   As always any help appreciated
   
   Ads
2. shaneio Established Member Joined: Nov 2008 welwyn garden city, hertfordshire Posts: 2313 s1 106 xsi

   #2 8th August 2011, 18:53

   failed on emissions. e.g 2nd fast idle? ect
3. ads85 Frequent Poster Joined: May 2011 Bradford on Avon,Nr Bath Posts: 866 '01 astra coupe

   #3 8th August 2011, 21:29

   Sorry yeah failed on both fast idles
   
   1st test
   
   fast idle 1 CO 0.992 (0.300 max)
   HC 226 (200 max)
   
   fast idle 2 CO 1.535
   HC 204
   
   Garage recommended changing cat which has been done, however when it went back in earlier it still failed although readings were a bit better
   
   2nd test
   
   fast idle 1 CO 0.603
   
   fast idle 2 CO 0.851
   
   Hydrocarbons passed this time on both idle tests
4. user_20080 Saxperience Hardcore! Joined: Dec 2007 smurfland. Posts: 17346 Ex saxo owner.

   #4 8th August 2011, 21:34

   On the original airbox should there not be a sensor (air temperature sensor)for that plug to go into?
5. ads85 Frequent Poster Joined: May 2011 Bradford on Avon,Nr Bath Posts: 866 '01 astra coupe

   #5 8th August 2011, 21:42

   That's what i thought steve but having found the old airbox from back of shed there doesn't appear to be anything but i will be checking again
6. rick_VTR Saxperience Forum Bum Joined: Jun 2011 Abermule, Mid Wales. Posts: 2763 Corsa Rally Car & Fiesta ST

   #6 8th August 2011, 21:58

   the k and n shouldnt effect it, as mine passed emisions with out a air temperature sensor plugged into anything, car also runs perfectly with out it and MPG is still on average.
7. ads85 Frequent Poster Joined: May 2011 Bradford on Avon,Nr Bath Posts: 866 '01 astra coupe

   #7 10th August 2011, 09:32

   Found the culprit, still running on original spark plugs lol, they were completely shot to bits
8. Pau1os Regular Poster Joined: Mar 2010 Pickering Posts: 303 129.05bhp mk2 Silver VTS

   #8 10th August 2011, 16:54

   shoildnt that be plugged into the underside of the throttle body?
9. ads85 Frequent Poster Joined: May 2011 Bradford on Avon,Nr Bath Posts: 866 '01 astra coupe

   #9 11th August 2011, 01:10

   There is one plugged in already, from what i've seen on other various saxo's it would seem that there could be 2 types (at least) of intake housings so i wonder if it's a generic engine loom?