mk1 leon

  1. iPhuff

    Mk1 FR 1.8t Brake fluid problem.

    Hello everyone! I have this little problem with my fr. My brakefluid is bleeding? somewhere, will inform after 2.5-5k km. Everything i can think of has been checked multiple times: brakelines, mastercylinder, clutch slavecylinder, abs module. Does someone know where it could go? No leaking under.
  2. kusti

    Seat Leon MK1 2005 1.9 TDI 81 KW Default Steering Column Switch to Computer Control Steering Column Switch

    Hello I want to know if anyone has installed the janitor's switch, which shows as in the video, to the TDI 1.9, does it have to be matched with the computer as well or is it compatible immediately? given video from 1.8
  3. Cupra_Josh

    ABS loom issue

    Hi guys I’ve got an abs issue on my mk1, 52 plate Leon cupra, looks like both front abs looms have been worn through and spliced back together but not used heat shrink and waters got in and corroded the wires, abs keep’s pulsing under braking and its driving me nuts to say the least, where dose...
  4. 1.8 20v weird hoses

    Hi everyone, Proud owner of my first car, a Mk1 1.8 20v, also new here because I could use your help. I already asked this on a dutch forum but maybe I'll get more help here. There are a few hoses that looks like a bypass for something, but i want to make it like factory again, and maybe one...
  5. dammaniak

    Oxygen sensor location?

    I picked up a Leon Mk1 for cheap, expecting it to be riddled with problems, but not the case. The only codes are for the O² sensor (p0038 & p0036). I've had a look underneath and found the wires for the sensor has been cut and another wire near has been cut. Anyone know the location of the...
  6. MLBrett

    Cold start issues

    Hi all, I've been having problems with my 1.8t AUQ engine. When cold, the engine will start, then stall and turn off, and will then start and run really rough until you pump the accelerator and it gets warm. When warm it'll start first try without a problem, however I can't be revving my car at...
  7. SUK1_2005

    Hello from my 2005 Seat Leon

    Hello everyone :) just joined. Last year I became the proud owner of Suki, my 2005 Seat Leon SX. Prior to me owning her she belonged to my grandma who decided to stop driving. On handover in May 2021 the car had done.... 11 thousand miles :LOL: as my gran only really took it to waitrose and...
  8. MLBrett

    Boost cut issue, diagnosis help needed

    Hey everyone, I have a MK1 Leon cupra (180), and when I put my foot all the way to the floor and hit about 3.5K rpm, the boost cuts out and the engine light comes on for a minute then clears, but if I'm more careful then boost holds all the way through the rev range. Feels like maybe a BOV or...
  9. mc funbot

    Engine bay N249 Bypass - A complete guide

    hey guys and gals after having a slight debate over the way to do an n249 bypass this is how i would do it,i like to know your views on it.i see alot of people only doing half a job.a random guy with a 1.8t leon agreed to let me do this.it had a cat back exhaust an a air filter.this took me 25...
  10. Pabs

    General maintenance Aero Wiper Modification MK1 Leon

    This guide was written by @Pabs This modification came about when I realised how badly the standard wipers on the Leon were. Not only do they look ugly, but they also tend to leave huge smears across the windscreen, which impairs visibility. My passenger wiper did nothing but smear, no matter...
  11. NathyPhillips

    N20THP - Clean MK1 LCR (Platinum Grey)

    Hi All, I've probably gone a bit over the top adding the Service & MOT detail but i thought it is about time i do a build thread for my car so I can look back at progress and appreciate the car in years to come, but also to share with all of you. Hopefully you can all appreciate the car as I...
  12. Sticky, klunky clutch cable

    Hi there, So I recently passed my test and got myself a 2005 Leon cupra TDI 150bhp, I'm kind of confused what model as I've been told it's a special one a short it's got a big standard front mounted intercooler. Car feels great but last night me and a few pals went for a cruise and on the way...
  13. Leon mk1 1.4 air intake sensor

    New user :) hoping someone can help Car went into limp mode last week and got it plugged into Bosch diagnostics computer. It's coming up with: P0113 - intake air temperature sensor 1 - signal too large. Have been told the air temp sensor will probably need replacing but all google searches seem...
  14. Bosher

    Mk 1 Leon adjustable strut braces

    Just discovered the front and rear adjustable strut braces off my old Mk 1 Leon in the garage (forgot I still had them). The rear one was part of a group buy on here. Open to sensible offers. Collection only (I'm near Eastbourne). However, I can deliver if your'e local.
  15. iammooks

    Non-spray bumper repair?

    This is why we can't have nice things... Brighton is full of a-holes - I've never had so much damage on my car. From scrapes on bumpers to people hitting the driver's side while turning in the road. This is the latest. Someone drove into the back while the car was parked, splitting the bumper...
  16. Seat Leon MK1 1.9tdi FR - P0401 EGR - Insufficient Flow Detected

    From what I have read, this is a common issue. I’ve had this issue in the past and last time it happened, I removed the EGR and gave it a good clean and the code went away for a year or so. The code reappeared a while ago and since I have removed the hose attached to the EGR to see if it’s...
  17. Leon20vt4

    02M 6 speed DIY rebuild help

    Hey everyone so the 3rd gear on my 20vt 4wd has gone kaputo... actually i bought the car that way. regardless i think its 3rd gear the symptoms point to 3rd. Every gear engages just fine except 3rd gear, and whenever you drive the car no matter what gear you are in the transmission makes alot...
  18. Seat Leon Mk1 TDI 110 Power Increase Help

    Hi i have got a Mk1 TDI 110 Leon standard and i am looking to get it to 200bhp+, money is not a problem. I have got someone sorted to remap it but i want to have all the parts installed so the remap will suit the upgraded parts. Is it possible for a Mk1 110 turbo to be upgraded to a 150 turbo...
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