Jump to content

VRTrickster

Members
 View Profile  See their activity

  • Content Count

    114

  • Joined

  • Last visited

 Content Type 

Posts posted by VRTrickster

  9. OBD2 Vag Com Measuring Blocks?

    in Engine Maintenance and Problems

    Posted

    I was just wondering if anyone knew what some of the unlabelled measuring blocks where on the vagcom, for the engine? I know that there are other readings that are covered but aren't labelled.

    I understand obd1 only covers 01 to 06 and these are explained in the bentley, but what about odd2?

    I list of all measuring blocks covered on a obd2 VR6 would be well handy.

  12. Corrado OBD2 VR6 No Lambda Adaptation?

    in Engine Maintenance and Problems

    Posted

    I have a lambda sensor fault showing up on vag-com ( 00525 ) Lambda sensor short to ground. It is not the lambda sensor at fault. I have found that out as I Im now on my third new Bosch sensor!

    All the wiring had checked out ok, but I attached some temporary signal wires for testing and still no change. The lambda voltage stays at 0.0v at idle and you only get voltage when I raise the revs up, then as they lower I see a voltage of around 0.5v then it gradually falls back to 0.0v.

    On the lambda % on engine measuring block 1 I have seen get as low as -3.0% then drop to 0.0v at idle. I dont think there is any fuel trim block on 032, but all the adaptation values for the lambda remain at 0.0%. On measuring block 008 there is a lambda reading and it reads -14.7v.

    I was wondering if the ecu is leaning the fuel off due to a leaky injector or something?

    I could really do with some help with this. Its really getting to me now

  14. Obd2 Ecu Not Learning Lambda Values?

    in Engine Maintenance and Problems

    Posted

    Ive been having a few rough running problems for a while now. This includes rough idle, very rich start up and slightly less mpg. I hooked up vagcom to take a look at measuring blocks as it doesnt show any faults. I noticed that the lambda values where high, rangeing from 10% to 20%? And there were no learnt values for idle and full throttle? Ive since replaced the lambda and have noticed a slight gain in mpg, but the readings are still similar? Ive now done about 200 miles since I disconnected the battery. Does anyone know what this could be, a faulty ecu perhaps? Thanks in advance for advice.

  20. OBD2 Conversion Help Needed! (wiring diagrams)

    in Engine Maintenance and Problems

    Posted

    Hi, Im in the middle of a obd2 conversion on my Corrado. I have both looms in front of me now, but I could really do with some wiring diagrams for the mk3.

    I dont know if anyone can help, I dont really want to fork out for a bentley, as Im sure that Haynes dont do one for the six cylinder mk3?

    Maybe theres someone near me with a Bentley, that I could copy the diagrams from ?

    If anyone can help, please let me know, cheers !

  21. Stage 3 fan on constant with ignition !

    in Engine Maintenance and Problems

    Posted

    Went out in the Rado today and suddenly the stage three fan came on constantly, and only switchs of with the ignition!

    As soon as I turn the ignition on it comes back on, strange !

    I unplugged the big plug on the back of the fan and it obviously stopped.

    Driving around with it unplugged also seemed to stop it cutting out I was experiencing, but Ill have to drive it a bit more to see if it has erradicated the stalling.

    Does anyone know what my problem is here, is the fan control unit faulty ?

  24. Back From Stealth !! NOW SORTED !!

    in Engine Tuning

    Posted

    As mentioned on Friday mate' date=' mine used to do the same and was the MAF - which is an impossible sensor to diagnose on OBD1 without an oscilliscope and other lab equipment.

    The 15 psi difference between front and rear banks needs investigating, whether it be as a simple as the rear cam being a tooth out (I've done that before, LOL!) or a problem with the head, but it will upset the engine at low speeds.

    [/quote']

    Well it looks like it was the MAF causing the cutting out after all Kev ! It doesn't cut out at all now which is great and it f-ing flys which is even better !

    I'm not too worried about the comp test as I might not of opened up the throttle whilst carrying it out or something ?

    The question is now could this be why my torque was just above average after the map ? Would the dodgy MAF of cause the dip in torque between 5 and 6k ? Could the fault of affected the power also?

    I'm so happy this has been resolved, I can now start enjoying the drive ! Thanks to everyone who helped with advice !

  25. Back From Stealth !! NOW SORTED !!

    in Engine Tuning

    Posted

    I have got a spare MAF I can try, but not sure if its Healthy?

    I spoke to Len the guy who done the head work and he has assured me that it wouldnt be to do with the flow work he carried out. He did phone a couple of professionals about my problem and they both came up with simular sugestions including stuck lifters. I have heard about bleeding hydraulic lifters to stop any artifical lift! I think Im going to take a weekend of double checking timing again, taking out the cams and bleeding the lifters. Also the oil pressure release valve can cause the lifters to fill up to much which is something else to think about. Im going to get to the bottom of this !!

×
×
  • Create New...