16v Help ASAP

1. KrisB Saxperience Forum Bum Joined: Aug 2009 Dorking,Surrey,M25 J9 Posts: 2616 Static -80mm Peugeot 405

   #1 8th October 2012, 20:06

   Okay, forgive me for asking, usually it's people asking me! But my scanner is crap with the particular problem.
   
   Okay, 106 gti. Tripple plug.
   
   Bogging down, missfiring. Not so bad when cold but once warm it gets worse. Black smoke / overfuelling.
   
   Have changed:
   Fuel pump + regulators
   Coilpack
   Map sensor
   ICV
   TPS
   ECT sensor
   Injectors + rail
   Crank sensor
   FRONT Lambda
   COMPLETE ENGINE + loom.
   All earths cleaned.
   Dozens of ecu reset and DTC's cleared. No current codes displayed
   
   Now, I'll try and explain.
   
   When running the problem gets worse the warmer it gets. I have physically tried everything. I have no fuel being returned when running.
   
   So, I'm thinking of the last two things to change. ECU and 2nd lambda.
   
   I've tried another ecu which is locked, but gives fuel returning.
   
   Sorry it's a bit hit/miss with my description but I've been trying to sort this for a few weeks. Surely this must be ECU related? Makes no difference if second lambda unplugged.
   
   Tenner to the first person to tell me what's wrong. Going to try another lambda and ecu tomorrow but I don't have faith.
   
   Kris
2. KrisB Saxperience Forum Bum Joined: Aug 2009 Dorking,Surrey,M25 J9 Posts: 2616 Static -80mm Peugeot 405

   #2 8th October 2012, 20:12

   Ps, problem is apparent from cold and full throttle. When warm you can JUST keep it running with very minimal throttle, until it cuts out and it won't start again for tiiime.
3. joe-gti180 Infrequent Poster Joined: Jan 2012 leicester Posts: 184 saxo vts track weapon ford transit van Mazda 3 M

   #3 8th October 2012, 20:12

   pistion rings?
4. KrisB Saxperience Forum Bum Joined: Aug 2009 Dorking,Surrey,M25 J9 Posts: 2616 Static -80mm Peugeot 405

   #4 8th October 2012, 20:13

   Unlikely on both engines. First engine had compression test and within tolerances across all 4. I know blow by test would be good, on the other hand there's no excess oil pressure.
   
   Tbh I'm certain this is a fuelling problem. It runs half okay till its warm, when it will hardly run, smokes black and gives me Carbon monoxide poisoning the following day.
5. joe-gti180 Infrequent Poster Joined: Jan 2012 leicester Posts: 184 saxo vts track weapon ford transit van Mazda 3 M

   #5 8th October 2012, 20:21

   umm. got me thinking. lol good luck mate.
6. user_20080 Saxperience Hardcore! Joined: Dec 2007 smurfland. Posts: 17346 Ex saxo owner.

   #6 8th October 2012, 20:43

   Christ thats a problem & a 1/2,right you say you`ve changed the loom have you changed anything like the coolant temperature sensor?The only other thing I can think of a faulty fuel pressure regulator(giving too much fuel)or a fault with the ecu.
7. KrisB Saxperience Forum Bum Joined: Aug 2009 Dorking,Surrey,M25 J9 Posts: 2616 Static -80mm Peugeot 405

   #7 8th October 2012, 21:11

   Yup, the only thing NOT changed is ECU and second lambda + anything further than engine loom.
   
   Using a donor (locked) ecu gives me returning fuel. Trying another ECU tomorrow and crossed fingers, but you know when you get that feeling it's just not gonna make a difference?
8. welshpug Saxperience Forum Bum Joined: Jul 2010 South Wales Posts: 3078 ZX 16v, 205 GTI, 309 Goodwood, 405 MI16.

   #8 9th October 2012, 14:37

   were all parts new/tested?
9. user_39461 Super Moderator Joined: Nov 2009 Cambridge(ish), UK. Posts: 10581 BMW 5x M50d.

   #9 9th October 2012, 14:59

   fuel filter?
10. user_38811 Saxperience Forum Bum Joined: Nov 2009 Sawtry Posts: 3456 Saxo VTS Saxo VTR

    #10 9th October 2012, 19:08

    Sounds like ECU problem to me since you've changed everything including new engine and still got a problem