Still not starting after gearbox swap?

1. wheeler Regular Poster Joined: Oct 2012 York Posts: 262 VTR with VTS engine

   #1 16th November 2012, 10:23

   I've had it on jump leads which made it crank like an absolute beast, checked the fuel pump relay to see if it clicks: it does, the FI primes but then after about 4 attempts of starting it doesn't prime anymore, during the swap we didn't touch any of the injectors or fuel lines or ignition system, all fuses are in tact - I just really want to get it started and have it running now
   
   Any ideas guys? Thanks in advance
   
   EDIT: Just been back out and checked to see if the relay still clicks now that the FI has stopped priming again and it's not clicking anymore - it did this on saturday last weekend, primed the first few attempts but then stopped. I had it on jump leads and this didn't get it to start priming again..
   
   
   
2. Gandi699 Saxperience Post Whore Joined: Apr 2011 Posts: 9100 Amazon green VTR 16v, Inferno RS clio 182

   #2 16th November 2012, 10:26

   the key icon is flashing on the dash it looks like? if so, immobiliser. Engine will turn but not fire
3. user_29491 Saxperience Forum Bum Joined: Dec 2008 Lancs Posts: 4124 JP4S'd R.

   #3 16th November 2012, 10:27

   Whats that flashing light?
4. wheeler Regular Poster Joined: Oct 2012 York Posts: 262 VTR with VTS engine

   #4 16th November 2012, 10:30

   oil level warning light (yellow/3rd one in from left)
   
   
5. Gandi699 Saxperience Post Whore Joined: Apr 2011 Posts: 9100 Amazon green VTR 16v, Inferno RS clio 182

   #5 16th November 2012, 10:38

   Ok well if its that check the oil but anyway, are you getting fuel and spark?
   I'd wire the pump to be on constantly (run a 12v feed to it from the battery) and try it. Then if no joy take the coilpack and plugs out but leave it connected to the plugs and see if it sparks on turning
6. wheeler Regular Poster Joined: Oct 2012 York Posts: 262 VTR with VTS engine

   #6 16th November 2012, 10:40

   yeah my mate kev the practical bastard said he's 99% certain it's a spark issue but I was convinced on fuel not getting through. Off to work now, will check for spark when I get in
   
   what could we have done to cause ignition problems I wonder?
7. user_29491 Saxperience Forum Bum Joined: Dec 2008 Lancs Posts: 4124 JP4S'd R.

   #7 16th November 2012, 10:43

   Bad earths cause a weak / intermittent spark. Or could of knocked the crankshaft sensor..
   
   I know it sounds too simple but its a easy mistake.. You got 2 earths on the gearbox and 1 on the chassis?
   
   I had 2 on the chassis and 1 on the box.. and it wouldn't spark, I thought a earth was a earth.. But clearly not
8. wheeler Regular Poster Joined: Oct 2012 York Posts: 262 VTR with VTS engine

   #8 16th November 2012, 10:47

   I'll get the car back up on stands (AGAIN) and check the crankshaft sensor.. There's definitely atleast one earth on the gearbox (on top just to the right of the bell housing).
   
   Does the other earth connect to the same place?
9. wheeler Regular Poster Joined: Oct 2012 York Posts: 262 VTR with VTS engine

   #9 16th November 2012, 10:53

   Yeah 2 earths there
   
   
   Where abouts is the crank sensor? Just noticed this plug on the front of the gearbox (towards the front of the car)
   
10. user_29491 Saxperience Forum Bum Joined: Dec 2008 Lancs Posts: 4124 JP4S'd R.

    #10 16th November 2012, 10:57

    That is it.
    
    And there's your problem - it's not plugged in lol
    
    Just been and checked my wiring, And the earths don't go on that bolt - they're on the gearbox but under the battery tray.

    1 user thanked this post: wheeler
11. user_29491 Saxperience Forum Bum Joined: Dec 2008 Lancs Posts: 4124 JP4S'd R.

    #11 16th November 2012, 11:24

    Please tell me it's just fired up?
12. Cam Saxperience Post Whore Joined: Nov 2010 Kent Posts: 8439 Gen 7 Celica 190.

    #12 16th November 2012, 11:32

    What saxova said it will not start with that plugged in
13. wheeler Regular Poster Joined: Oct 2012 York Posts: 262 VTR with VTS engine

    #13 16th November 2012, 11:39

    Ah right @ gearbox earths, thanks dude. And as for the crank sensor, where should I trace to/from in order to find the plug? Couldn't see it hanging loose anywhere (and I'm not embarrassed in the slightest lol). Thanks dude!
14. user_29491 Saxperience Forum Bum Joined: Dec 2008 Lancs Posts: 4124 JP4S'd R.

    #14 16th November 2012, 11:49

    Haha - always turns out to be the simple things that catch us out.
    
    follow that green / yellow earth you pictured - the crank shaft sensor wiring comes out of the same part of the loom as that.
    
    2 wires black push on clip type plug

    1 user thanked this post: wheeler
15. wheeler Regular Poster Joined: Oct 2012 York Posts: 262 VTR with VTS engine

    #15 16th November 2012, 11:53

    You lovely lovely people, thanks so much - just arrived at work so will give it a look and report back tonight.
16. Gandi699 Saxperience Post Whore Joined: Apr 2011 Posts: 9100 Amazon green VTR 16v, Inferno RS clio 182

    #16 16th November 2012, 11:59

    hah just read this, you'll be needing that crank sensor plugged in buddy. Nice easy fix, its always something daft like this but you can spend ages looking for it
17. wheeler Regular Poster Joined: Oct 2012 York Posts: 262 VTR with VTS engine

    #17 16th November 2012, 12:00

    lol cheers lads, it's always the small things eh?
    
    p.s. I'll probably be home about 3-4pm so will report back, probably with a video if it fires
18. welshpug Saxperience Forum Bum Joined: Jul 2010 South Wales Posts: 3078 ZX 16v, 205 GTI, 309 Goodwood, 405 MI16.

    #18 16th November 2012, 12:31

    Lol! :d
19. wheeler Regular Poster Joined: Oct 2012 York Posts: 262 VTR with VTS engine

    #19 16th November 2012, 12:33

    edit scrap the home time of 3-4pm: been summoned to Pole Position Indoor Karting in leeds where I'm applying vinyl graphics to race karts for a 24 hour endurance race. Woof!!
20. wheeler Regular Poster Joined: Oct 2012 York Posts: 262 VTR with VTS engine

    #20 16th November 2012, 19:55

    Fucking YESlads!! It lives! Thank you for all your help! Only one minor issue now, where abouts is the speedo sensor? My speedo isn't working lol
21. user_29491 Saxperience Forum Bum Joined: Dec 2008 Lancs Posts: 4124 JP4S'd R.

    #21 16th November 2012, 20:21

    Gratz
    
    And at the back of the box, grey clip type plug lol
22. welshpug Saxperience Forum Bum Joined: Jul 2010 South Wales Posts: 3078 ZX 16v, 205 GTI, 309 Goodwood, 405 MI16.

    #22 16th November 2012, 20:23

    on the back, pretty much opposite
23. user_10473 Saxperience Forum Bum Joined: Jun 2006 Swansea Posts: 4946 Bianca White Peugeot 106 S2 Rallye, Saxo VTS

    #23 18th November 2012, 14:25

    Did you plug anything back in?
24. wheeler Regular Poster Joined: Oct 2012 York Posts: 262 VTR with VTS engine

    #24 18th November 2012, 14:36

    didn't have time before my trackday yesterday so just had to drive without speedo for the day. Will get on it next weekend as I'm working away again all week..
    
    
    New issues: it won't start again. came off the track and back in the paddock towards the end of the day yesterday - all running fine, turned it off. 10 mins later tried to fire it up, nothing. Starter not even clicking, but all headlights, electric windows all work fine - bump started it and it fired perfectly/drove all the way back to york fine.
    
    Thinking possibly an earth. Any ideas where to look guys?