VRTrickster

Just got my dad to price up a lambda from VW with discount, cos he works for Audi. And inclusive its £110! Will testing the resistance from pins 20 and 42 tell me if theres a problem with the ECU? Im going to swap the lambda back over to the after market one tomorrow to see if it registers on VAGCOM. Because at the moment there is nothing! Probably give the ECU pins a clean also. :?

Right I've just had a looked at the wiring following this explanation on the bentley website. http://tech.bentleypublishers.com/threa ... tstart=179 These are the results : ECU Pin 20 to Lambda Pin 4 (0.6 Ohms) ECU Pin 42 to Lambda Pin3 (0.5 Ohms) ECU Pin 20 to Battery earth (infinite resistance) So this concludes the wiring is ok, so I'm assuming its the Bosch lambda :( I've just sent the seller a message on ebay to get a replacement. There couldn't be a problem with the ECU could there?

Ive just read up about testing from the black signal wire. Ill run it up a see what Im getting there whilst connected.

Right it seemed you were right kev. I ended up getting a couple of codes up for the lambda 00525 no signal intermittent and heating before cat, open short to ground. I took your advice and purchased a Bosch item off ebay for £68 delivered. I fitted the new sensor over the weekend and the car seemed to drive a lot smoother. But after a a long drive to north London it started running like a bag of s**t and really lumpy idle! I hooked it up to vagcom and it threw the code 00525 O2 sensor short to ground. It is not giving any readings for the lambda also. I cleaned up all the connections on the loom plug but still nothing. I tested the voltage at the terminals whilst running and I got a 14v a 0.78v and IIRC 0.3 something. Do these sound familiar? What can I do to test the lambda? Or could it just be the lambdas cur put? Im really having a hate relationship with the car now! :mad2:

Do you have both wiring diagrams for both vehicles? If you dont, you could really do with them as they will help you out no end with what is what. And what you dont need on the golf loom. With the aux pump I used the diagram to find out what wires controlled it and removed something from the Corrado loom. Im unsure of what it was as it was quite a while ago now sorry.

Does sound like a good map, but do you cater for OBD2? Do you think it would need some tweaks for my mods?

Most definately the best uprated loom Ive ever seen!

How many coats did you give them? And do you have to lacquer them after?

Your right, its made a real difference! I can now feel less than half the vibrations through the car. It must of been like this for years! When I bolted it all back up I noticed I had to re adjust the my BMC as it was right up against the suspension turret. I think I need to get a new VW box mount now as I get a chewbacka type sound as I pull away sometimes and can feel it threw the gear lever. The idle is still a bit lumpy and a think Ive found the problem. The inlet pipe I bought a little while back because mine was spilt, is spilt also. Bought another one off the bay and hopefully its got no splits. And then I should have a smooth idling VR. :)

Very nice looking rado indeed mate. Did you do the rear lights yourself? I see that you pin striped the indicators. Was in a pain doing the striping? What tint spray did you use? I was thinking of doing mine like that for a while now. Sorry for all the questions but they look sweet. :)

Ok, cheers for clearing that one for me. :)

I was just wondering if my car is supposed to have this part, as it doesn't? And also does it do much? Cheers.

Looks like I might have to get some of that gear. Does the job really well :)

After looking under the car Saturday I noticed that a bolt had sheared off on the front engine mount bracket! This had caused the engine to drop. I don't know how long its been like that for, but that could be why I'm experiencing pulsing lumpy idle. It must have been causing a lot of stress to the rear mounts. Removed the gearbox over the weekend to get the broken bolt out. Come out easily enough with an easy out. Broke my aux pump whilst taking the box out though :mad2: Should have it bolted up this weekend, then I can see how she idles ............ probably just the same, lol!

I'm really not happy now. After looking under the car today I noticed that a bolt had sheared off on the front engine mount bracket! This had caused the engine to drop. I don't know how long its been like that for, but that could be why I'm experiencing pulsing lumpy idle. It must have been causing a lot of stress to the rear mounts. I've got to take the box out tomorrow to get the rest of the bolt out and I'm really looking forward to it! :brickwall:

Oh yeah sorry. :oops: I'll keep them in mind for a new one thanks.

Changing the idle does sound interesting. I'll have to take a look into that. I don't think I can be bothered to swap the cams back. I'll maybe give Vince a call on that one cheers kev. I know what you mean about the probe, and I would normally go genuine but haven't got the funds at the moment. I will swap it for one as soon as I can though, especially if it causes problems. coullstar, Thanks for the offer, I may take it off you but I'll see how much my dad might be able to get one threw Audi with staff discount. :)

Bump

Im obd2 and I cant say my idle is that much better, but it does run a lot better for sure. I to have been chasing a smooth idling VR, but Im now coming to terms of the fact that I am asking for too much. My idle is lumpy, like has been said when hot. It sort of pulses if anyone knows what I mean? I also think that the cams, light flywheel and stiffer engine mounts contribute to this?

I like the look of these also, but would question quality and durability. Let us know how you get on with them. :)

Oh, and also do I need to carry out basic settings on vagcom? I did reconnect the battery when the car had cooled a bit, should this affect things?

Yes it was Im afraid. Cant really stretch to a genuine one at the mo. It was £30 of fleabay, but it has got a years warranty. How much are the VW ones? Thanks for looking over that for me kev, puts my mind at rest a bit. I still have a lumpy idle. Sort of pulsing if you get what I mean? I dont know whether its to do with the Dougherty racing cams, light weight fly and stiffer mounts. What do you think? Thanks again for you help.

Right, I feel bit stupid now. I hooked it up this evening and it seems it has learnt some values. Ive taken some screen shots of before I started it, then just after and one up to temp. Also took one for the maf readings. I was just wondering Kev. Could you please take a look over them and see if theres anything out of the ordinary, as you know a lot more about it than I do please. :notworthy: Thanks

Its modified as to my sig. I replaced the maf not so long ago with a bosch exchange unit from ecp. Maybe I should hook it up later and record what Ive got this evening so you could see what you think? Cheers.

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.