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Mick's mk4 1.6 to 1.8t conversion

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  • #31
    Can anyone tell me where the bcm is located on the mk4 golf?
    '01 Mk4 Golf GL, Engine swapped to 1.8L GTi motor, Whiteline Swaybars, Nolathane & Pedders Bushes, K&N Oversize Pod Filter, 2 1/2 inch Cat back exhaust

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    • #32
      Try clearing fault codes and do a reset with vagcom first , then swap the bcm if need be
      My build thread here: 1.6 sr into 1.8T http://www.vwwatercooled.org.au/foru...-8t-63249.html

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      • #33
        Bcm is a black box with 2 wire bundles coming out of it. It is held by 2 screws up under the dash. Take off the plastic cover under the steering wheel. Under that is a metal plate or another big plastic cover. It lives up under there. Pain to get to, hence try code clearing and reset first.
        My build thread here: 1.6 sr into 1.8T http://www.vwwatercooled.org.au/foru...-8t-63249.html

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        • #34
          Ok well I've found a black box with one wire bundle coming out but not too, dash is already apart..
          '01 Mk4 Golf GL, Engine swapped to 1.8L GTi motor, Whiteline Swaybars, Nolathane & Pedders Bushes, K&N Oversize Pod Filter, 2 1/2 inch Cat back exhaust

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          • #35
            Right..

            Very eventful night tonight!!
            First of all tonight I checked all the earths on the wiring. She started and then died.. Immobilizer was kicking in. So checked that I had changed the instrument cluster like I thought I had, and well I hadn't. So put the gti cluster in and you wouldn't believe it... It started!!

            I had to change the transmitter in my key to the gti one but it worked now...
            So I tried to rev the car and see how she went. Well it's got a cable throttle so now I have to hook it up but otherwise everything is running without problems..

            Tomorrow night I'll get the cable hooked up and see how she drives... I can't wait

            Will let you all know how it goes.. Thanks to Stan and Jmac for helping with this.

            Just thinking of it the motor must weigh more then the old one, it's now sitting alot lower in the front.

            '01 Mk4 Golf GL, Engine swapped to 1.8L GTi motor, Whiteline Swaybars, Nolathane & Pedders Bushes, K&N Oversize Pod Filter, 2 1/2 inch Cat back exhaust

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            • #36
              Awesome mick!
              Still do a vagcom code clear, keeps the computer nice.
              Your front springs were for the 1.6, so will ride lower, they may be a bit soft too, watch for bottoming out.
              Did you upgrade the brakes, they are for rhe old engine as well
              .
              You might get an error light on the dash for the brake pad wear sensor, if you dont have those hooked up

              Well done mate .
              My build thread here: 1.6 sr into 1.8T http://www.vwwatercooled.org.au/foru...-8t-63249.html

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              • #37
                Na left the brakes as my model uses the same rotors and calipers. Plus I've already got slotted dba rotors on her.
                I've got no error codes at all or no fault lights on the dash. She is a happy car just need this cable hooked up and I'll be right
                '01 Mk4 Golf GL, Engine swapped to 1.8L GTi motor, Whiteline Swaybars, Nolathane & Pedders Bushes, K&N Oversize Pod Filter, 2 1/2 inch Cat back exhaust

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                • #38
                  Good job then, looking forward to hearing the throttle is sorted. I found there was a difference between the original cable and the gti one. Ended up cutting it down a bit.
                  My build thread here: 1.6 sr into 1.8T http://www.vwwatercooled.org.au/foru...-8t-63249.html

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                  • #39
                    Good work mate!

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                    • #40
                      My old motor was electronic throttle so have to run the new cable
                      '01 Mk4 Golf GL, Engine swapped to 1.8L GTi motor, Whiteline Swaybars, Nolathane & Pedders Bushes, K&N Oversize Pod Filter, 2 1/2 inch Cat back exhaust

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                      • #41
                        Cable is fine, should be a hole high on passenger side of firewall, cable attaches to the top of the pedal lever there, then out and across to the throttle body
                        Having a cable also means it's not too hard to run aftermarket cruise control, as it actuates the cable: my next project
                        My build thread here: 1.6 sr into 1.8T http://www.vwwatercooled.org.au/foru...-8t-63249.html

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                        • #42
                          Stan, the cable runs behind the heater box I have to pull it out to run the cable.. It's a big job
                          '01 Mk4 Golf GL, Engine swapped to 1.8L GTi motor, Whiteline Swaybars, Nolathane & Pedders Bushes, K&N Oversize Pod Filter, 2 1/2 inch Cat back exhaust

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                          • #43
                            you using the accelerator pedal from the 1.6? On mine the extension of the pedal goes all the way to the top of the firewall and if you prop the pedal in the fully out position is just about touches where the hole in the firewall is - simply clip the cable in that end (simple slotted hole in the top of the pedal extension) and run around to the throttle body.

                            If you can reach the top of you pedal from inside the car (if yours is different) simply feed the cable through until you can reach it and attach it..... go in through the firewall from the engine bay side and feed it down anywhere pretty much - way easier than feeding it out from inside the cabin.

                            Hook it up. test that you arnt getting any trouble from other cables etc from behind the dash...

                            hope it goes well mate - you are pretty much there now
                            My build thread here: 1.6 sr into 1.8T http://www.vwwatercooled.org.au/foru...-8t-63249.html

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                            • #44
                              After our chat last night the only option is to put in the gti accelerator pedal. Love the engine recording, sounds like a spitfire !
                              My build thread here: 1.6 sr into 1.8T http://www.vwwatercooled.org.au/foru...-8t-63249.html

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                              • #45
                                Glad to hear its working out!!

                                Cheers
                                Jmac
                                Alba European
                                Service, Diagnostics and repairs. Mobile Diag available on request
                                Audi/VW/Porsche Factory trained tech 25+ yrs exp
                                For people who value experience call 0423965341

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