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Dox

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Posts posted by Dox

  2. Posted · Edited by Dox

    UK VR6s are OBD1, this precedes OBD2 which scanners are designed to be used on, hence there use is quite limited.

     

    are you distributer or coil pack?

    You need a plug lead removal tool to get the leads off the plugs, yanking on them will damage them. Some cars still have these clipped to the bonnet stay, otherwise it’s eBay I’m afraid.

     

    https://ebay.us/m/dJ1JU5

     

     

  8. Posted

    On 7/25/2025 at 9:47 AM, corrado wannabe said:

    Great info Dox, thank you.

    So far, I have:

    Injector seals, throttle body gasket, plugs, lambda sensor, temp sensor, cat. Swapped ecus, swapped isv. 

    I am getting a couple of exceeded limits codes, so I'm happy the sensors are reading correctly but can't adjust any further.

    My next port of call is to check the injectors, including the fifth injector.

    I'm just glad it's not my daily driver!

    Dougie

    You should have an emissions print out from the MOT fail?

  9. Posted

    On 7/23/2025 at 1:53 PM, corrado wannabe said:

    Good stuff,

    I am close-ish, Biggar. But mine is currently smirking at me every time I open the garage door as I can't get the emissions down on it. Think I'm going to give in and pit it into an old school garage near me and see if they can diagnose the issue rather than throw parts  at it.

     

    Dougie


    EMISSIONS HELP 

    CO high, co2 low hc high, o2 high - rich mixture with ignition misfire

    CO high, co2 low hc high, o2 low -faulty thermostat or coolant sensor

    CO low, co2 low hc low, o2 high - exhaust leak after cat

    CO low, co2 high, hc low, o2 high - injector misfire, cat ok

    CO high, co2 low, hc medium to low, o2 high - rich mixture

    CO high, co2 high, hc high, o2 high - injector misfire, cat not working, combination of rich mixture and vacuum leak

    CO low, co2 high, hc low, 02 low, good afr and cat operation- system normal .
    lambda typical range 0.97 to 1.03 [ ideal lambda 1 ]
    The emissions limits to be met are specified for both the fast and normal idle tests. At fast idle, CO must be at or less than 0.2%, HC at or less than 200 parts per million (ppm), and the lambda value(1) must be between 0.97 and 1.03. At normal idle, CO must be at or less than 0.3%

    • Like 1

  14. Posted · Edited by Dox

    It does sound like HGF, if I remember correctly the 8v suffers with cylinder 1 (cam belt end), remove the plugs and check the tops of the pistons for carbon, a clean piston would indicate an issue as it’s been steam cleaned by the coolant.

     

    hth

  15. Posted

    I think you've missed the odd word out there?

    I assume you had to push the meter probe further into a fuse holder?

    So basically you had a circuit that could read 12v with your multimeter but had connections so poor it was unable to carry the current needed for the pump to work?

  17. Posted

    2 hours ago, Keyo said:

    Im not sure what happened to them- I know there was a very popular chap engineer their called Brian Rickets who late went onto open BR Motorsports ( Banbury)who sadly passed a number of years ago- I was chatting to a guy who purchased all his stock like nothelle heads- manifolds, camshafts- pistons- to this day all this stuff is still in a lock up .  Also the other owner Richard lloyd heard passed away in a plane crash. https://en.wikipedia.org/wiki/Richard_Lloyd_Racing history  - Air crash. https://en.wikipedia.org/wiki/2008_Biggin_Hill_Cessna_Citation_crash

    Would love to get a magazine article or advertisement with the corrado in it. 

    Yes I started looking at the history of car and went on the GTI Engineering page on FB- at first the expert on their was denying it was a demonstrator in till one of the sons of an ex mech their said he had been to a show in the exact car  brand new-  Crowthorne TRRL to put on the GTI Engineering 1990- low and behold dug out a photo wearing the demonstrator plate.  The expert has now confirmed it is indeed a demonstrator GTI car . 

     

    VW Motoring Mag, VW Audicar Mag (split and became VW Driver / Audi Driver mag), would have featured, if you can locate Neil Birkitt (here, ClubGTi) he may be able to help with mag road tests as he edited all those mags at one time or other

  19. Posted

    4 hours ago, James. said:

    The first thing I thought of was the plate, but at that price I’d leave it where it is 🫢.

    Some nice pieces/photos. Do we know what happened to GTI engineering ? Absorbed by another company ? Anyone still about you can reach out to ?

    Very exciting. It’s like looking for automotive treasure 😎.

    From memory it went to Brodie Britain Racing (BBR) who I think were can RS tuner and they shared a small advert in the VAG press?

  22. Posted

    Mate of mine just bought a mondeo st220 (he had one before, regrets selling it), flatbed dropped it off Saturday 1pm, rough idle, seller couldn’t sort it, owned the car for 10 years, had the plenum removed and new plugs PITA job on the rear bank on these.

     

    mate did due diligence, pushed a lead fully home and alls good- lead had pushed up the rubber cap.

    • Thanks 1

  24. Posted

    1 hour ago, corrado wannabe said:

    Nope! Despite it being mot'd and insured, the rough running is still not cured and it's  driving me nuts. 

    I'm seriously considering calling it quits and buying an older Cayman for a Sunday car.

    Pull plug leads off one by one, if you find one makes little difference to the idle you’ve located the bad cylinder (do all 6 even if you’re lucky with the first one).

    plug

    lead

    Injector

    compression - cylinder or valve

     

    you wouldn’t be the first to transpose two plug leads 

  25. Posted

    3 hours ago, Cressa said:

    Cmon matt, get a Corrado project and make it EV 😋

    I’ve wondered if an E-UP battery pack would fit the floor pan?

    wont be quick but would be different?

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