106 gti hesitation/holds back doesn't seem to g

1. Sophia_Bush Saxperience Post Whore Joined: Jan 2007 Shropshire Posts: 9994 Moonstone Blue 106 GTi

   #1 20th August 2011, 21:42

   Right got a gti today drive back was ok until it got to 1/4 tank and randomly cut out a few times but got going again once cranked over a bit, got home and had a proper look had one of them proper shit adjustable fprs on so took that off and connected the return line back up to how it should.
   
   Idles ok I guess about 900/950 ish initial drive without said shit attachment was fine no problems but on the 8 mile return journey from picking mum up from work when you put your foot down slightly anything above 2.5k and it shuddered didn't go and bogged down. Now if you feathered the throttle or just kept foot down it would pick up a bit but not normal.
   
   Thinking in terms of sensors tps and map any other suggestions at all? or what it could be
2. tweeqd Established Member Joined: Mar 2006 Farnham Surrey Posts: 1542 AX GT 16v turbo 6 speed with NOS 205 gti6 E 320

   #2 20th August 2011, 22:17

   check the crank sensor gav
3. Sophia_Bush Saxperience Post Whore Joined: Jan 2007 Shropshire Posts: 9994 Moonstone Blue 106 GTi

   #3 20th August 2011, 22:23

   ok will do martin, other than that anything else come to mind? fuel starvation been mentioned aswell via blocked filter or dirty injectors?
4. tweeqd Established Member Joined: Mar 2006 Farnham Surrey Posts: 1542 AX GT 16v turbo 6 speed with NOS 205 gti6 E 320

   #4 20th August 2011, 22:25

   yes if you have the toold check the fuel pressure at the fuel rail, if not check the filter and see what colour the fuel is
   also check the wiring to the map sensor as ive seen the break on a few and cause running problems
   
   does it do it more under load (is it worse going up hill compared to going down)
5. Sophia_Bush Saxperience Post Whore Joined: Jan 2007 Shropshire Posts: 9994 Moonstone Blue 106 GTi

   #5 20th August 2011, 22:30

   it is basically under load only regardless of going up hill or down it will do the same thing shudder not pick up speed sort of like when you run out of fuel but if you feather the throttle slowly it will pick up but if you just out foot to floor it will do that and pick up but jerky
6. blackie_2k5 Saxperience Hardcore! Joined: Oct 2008 Birtley Posts: 22253 VTR Turbo, 106 xsi track slag, Transit recovery, B

   #6 20th August 2011, 22:52

   Quote:

   Originally Posted by Sophia_Bush it is basically under load only regardless of going up hill or down it will do the same thing shudder not pick up speed sort of like when you run out of fuel but if you feather the throttle slowly it will pick up but if you just out foot to floor it will do that and pick up but jerky

   my vtr does this on boost if running 1/4 tank or less since fitting the turbo, ive got it down to pump/filter/FPR
7. Sophia_Bush Saxperience Post Whore Joined: Jan 2007 Shropshire Posts: 9994 Moonstone Blue 106 GTi

   #7 20th August 2011, 22:55

   aye andy it was bad with the adj fpr bollocks fitted but then as above took it off ran ok for 8miles or so then started doing that bad
8. blackie_2k5 Saxperience Hardcore! Joined: Oct 2008 Birtley Posts: 22253 VTR Turbo, 106 xsi track slag, Transit recovery, B

   #8 20th August 2011, 23:07

   Quote:

   Originally Posted by Sophia_Bush aye andy it was bad with the adj fpr bollocks fitted but then as above took it off ran ok for 8miles or so then started doing that bad

   maybe the FPR or pump is goosed and thats why the FPR was fitted, or maybe the FPR was fitted to gain more power as ppl seem to believe, and its fucked the pump in the process??
9. Sophia_Bush Saxperience Post Whore Joined: Jan 2007 Shropshire Posts: 9994 Moonstone Blue 106 GTi

   #9 20th August 2011, 23:22

   nah it was fitted with the supercharger ill see tomorrow got a crank sensor I can change plus fuel filter/redex, injector cleaner won't cost much
10. Sophia_Bush Saxperience Post Whore Joined: Jan 2007 Shropshire Posts: 9994 Moonstone Blue 106 GTi

    #10 21st August 2011, 15:51

    Reporting back on the mater drove it this morning to halford and it seemed fine so put some injector cleaner down it went for another drive seemed ok again but same problem crept up so back to halfords got some cable ties off my mate and checked the cps looks like the clip on the plug is broken so even tho you push the plug in the more you drove it the bit by bit it worked itself out.
    
    So cabled tied that tight so it didn't move went for another drive and it was much better full revs went well but again again a few miles it started doing the same thing but not as bad got home jacked car up changed fuel filter went for another drive and this time everything seemed much better without any of the aforementioned problems creeping up again.
    
    Going for another drive in a bit to see how it is then tomorrow morning will take it for a long drive and see how it copes all in "it seems" to be fixed, although if it was my car I'd give it a plug, oil, oil filter service aswell but since its not oh well
11. blackie_2k5 Saxperience Hardcore! Joined: Oct 2008 Birtley Posts: 22253 VTR Turbo, 106 xsi track slag, Transit recovery, B

    #11 21st August 2011, 15:57

    my megan had that sort of prob when the filter was blocked, fuel coming out of it was black lol, the shit in it settles at lowest point when you dont use it, but then ruffles up when the pump starts working and after a few miles its bloacked all the element again... hopefully yours is the same
    
    easy fix then!
12. EwynSaxo Established Member Joined: Dec 2008 Penpedairheol/Cascade/Bargoed Posts: 2104 Furio R.I.P, onyx Gti, astra turbo

    #12 21st August 2011, 20:19

    I had this problem with my gti when I first bought it turned out to be the lambda sensor
13. dan_dan_the_saxo_man Frequent Poster Joined: Dec 2009 England Posts: 574 1998 saxo 1.1 sx 2001 saxo vtr

    #13 21st August 2011, 21:00

    wouldnt be the coil pack by any chance? neevr ahd a gti but i can say my 1.1 had very similar problems but only occasionally...say if i was pulling on motorway and i put foot down id lose all power momenterally.
    
    sorry if im completly wrong
14. user_35090 Established Member Joined: Jun 2009 west mids (dudley) Posts: 1201 cammed 106 flatty

    #14 21st August 2011, 23:39

    When you mention CPS that's the crank position sensor? Where is that located?
    
    Glad you have sorted it. Took my car for a short drive, and it does the same until boost kicks in then sorts it self out. But then when I change gear does the same it's like it's not got any power.
    
    Gunna look at fuel filter this week and get some injector cleaner aswell.
15. Sophia_Bush Saxperience Post Whore Joined: Jan 2007 Shropshire Posts: 9994 Moonstone Blue 106 GTi

    #15 21st August 2011, 23:41

    front of box steve you cant miss it
16. user_35090 Established Member Joined: Jun 2009 west mids (dudley) Posts: 1201 cammed 106 flatty

    #16 21st August 2011, 23:50

    Ah I know the one.
    
    Would this cause idle issues gav?
17. Cam Saxperience Post Whore Joined: Nov 2010 Kent Posts: 8439 Gen 7 Celica 190.

    #17 22nd August 2011, 02:37

    My furio done this get to 2500 - 3000rpm then only sometimes i would throttle and it would jolt a bit then try die then make no power what so ever, let go of throttle and give it some again and it would be fine, turn out to be map sensor.
    Plag a diagnostic controller