Car wont rev past 3000rpm after putting a 4-2-1 manifold on

1. user_53934 Regular Poster Joined: Jul 2011 Leeds Posts: 285 Saxo VTS

   #1 3rd January 2012, 13:16

   Fitted a 4-2-1 manifold, the manifold came with a lambda sensor already in it but will only fit the plug for the 2nd plug which is suppost to read clean air if i right, so iv left it disconnected, car starts fine and revs upto 3000rpm with no problem but will not go past 3000 even with foot flat just stays at 3k, engine management light is obv on how can i solve this problem?
   Cheers
   Curt
2. mlawlan69 Saxperience Forum Bum Joined: Sep 2010 leeds Posts: 4389 MCS R53 S/C 16v furiooo

   #2 3rd January 2012, 13:29

   First reads dirty second reads clean, wire the second one in and tuck it somewhere it can read clean air, mine is tucked in the front wing.
   
   Sounds like it is in limp mode, disconnect the battery to reset the ecu, should sort it.
3. Sax_B7LL L-plater Joined: Nov 2011 Falkirk Posts: 90 Old: MG ZR 1.4 16v New: Citroen Saxo VTR 1.6 8v

   #3 3rd January 2012, 18:31

   is that common :/?
4. rick_VTR Saxperience Forum Bum Joined: Jun 2011 Abermule, Mid Wales. Posts: 2763 Corsa Rally Car & Fiesta ST

   #4 3rd January 2012, 18:33

   you have got the first (green plugged) lambda sensor plug in and screwed into the mani right?
5. Ben_SaxoForte Saxperience Forum Bum Joined: Mar 2009 Stoke-on-trent Posts: 2640 Mk5 Golf GTTDI Mk2 VTR Project

   #5 3rd January 2012, 19:00

   Quote:

   Originally Posted by rick_VTR you have got the first (green plugged) lambda sensor plug in and screwed into the mani right?

   +1 sounds like you have got the wrong lambda plugged into the mani, 1st one needs to be in and 2nd one sleeved
6. user_53934 Regular Poster Joined: Jul 2011 Leeds Posts: 285 Saxo VTS

   #6 3rd January 2012, 22:43

   Quote:

   Originally Posted by rick_VTR you have got the first (green plugged) lambda sensor plug in and screwed into the mani right?

   Must be my problem the 4-2-1 came with the 2nd one plugged in :s weird so if i rake the 1st one out of the standard mani & put that in the 4-2-1 and sleave the 2nd it will run normal and stop the ecu from limiting it to 3000rpm?
   Cheers
7. mlawlan69 Saxperience Forum Bum Joined: Sep 2010 leeds Posts: 4389 MCS R53 S/C 16v furiooo

   #7 3rd January 2012, 22:46

   Quote:

   Originally Posted by curt272 Must be my problem the 4-2-1 came with the 2nd one plugged in :s weird so if i rake the 1st one out of the standard mani & put that in the 4-2-1 and sleave the 2nd it will run normal and stop the ecu from limiting it to 3000rpm? Cheers

   im not sure they are related, but yes, thats how it should be, first one from old mani into the 421 then second one sleeved to read clean air.
   
   also, couldnt ring you earlier mate sorry, left my phone at work
8. user_53934 Regular Poster Joined: Jul 2011 Leeds Posts: 285 Saxo VTS

   #8 11th January 2012, 16:29

   still same problem just put a brand new green lambda in the exhaust and connected it up still not going past 3000rpm :@
9. Barry123 Saxperience Hardcore! Joined: Oct 2005 Aycliffe Posts: 32205 Saxo VTS

   #9 11th January 2012, 16:39

   Yeah it won't because you haven't reset the ECU yet.
10. user_55763 Frequent Poster Joined: Oct 2011 Milton Keynes Posts: 869 2000 Citroen Saxo 1.0L

    #10 11th January 2012, 18:46

    disconnect the battery to reset the ECU. minimum of hour. most people say 6 hours is the best time to leave it disconnected.
11. user_53934 Regular Poster Joined: Jul 2011 Leeds Posts: 285 Saxo VTS

    #11 12th January 2012, 16:12

    Quote:

    Originally Posted by AnthonyMartin disconnect the battery to reset the ECU. minimum of hour. most people say 6 hours is the best time to leave it disconnected.

    Will do
12. Barry123 Saxperience Hardcore! Joined: Oct 2005 Aycliffe Posts: 32205 Saxo VTS

    #12 12th January 2012, 16:32

    Quote:

    Originally Posted by AnthonyMartin disconnect the battery to reset the ECU. minimum of hour. most people say 6 hours is the best time to leave it disconnected.

    I'm talking, yet no one is listening....
13. user_53934 Regular Poster Joined: Jul 2011 Leeds Posts: 285 Saxo VTS

    #13 12th January 2012, 20:35

    Quote:

    Originally Posted by Barry123 I'm talking, yet no one is listening....

    left it over night still didnt work, some company can come to my house and do it for £30