VR6Pete 1,455 Posted June 27, 2013 Report Share Posted June 27, 2013 Shouldn't make a difference that I'd have thought. You need get it on vag-com check your measuring blocks for lambda, MAF etc..Did you perform a throttle adaptation also and checked wiring to blue temp sensor?My corrado ran smooth as a nut after my obd2 conversion Link to post Share on other sites
leespiro 9 Posted June 27, 2013 Author Report Share Posted June 27, 2013 havent done anything yeh but i was told to get the 3bar fpr on it to sort out the rough idle Link to post Share on other sites
leespiro 9 Posted June 27, 2013 Author Report Share Posted June 27, 2013 also is the Lambda Sensor defo different has i havent changed it overwil the snap onsolus pro get all the readings i need Link to post Share on other sites
VR6Pete 1,455 Posted June 27, 2013 Report Share Posted June 27, 2013 Yes, I had to swap the lambda as its different...I ran a 4bar fpr on my old 2.8 obd2 with no problems. Unfortunately I'm not familiar with that equipment so I can't answer that question Link to post Share on other sites
leespiro 9 Posted June 27, 2013 Author Report Share Posted June 27, 2013 ok i will do that but would it make the car run rough on idle Link to post Share on other sites
VR6Pete 1,455 Posted June 27, 2013 Report Share Posted June 27, 2013 Probably wont help mate. Would make the MAF work harder I'd have thought trying to sort out the fuel / air etc... Have you verified your MAF is in working order? Does it run worse if you unplug it ? Link to post Share on other sites
leespiro 9 Posted June 27, 2013 Author Report Share Posted June 27, 2013 seem to run a bit better but still rough Link to post Share on other sites
VR6Pete 1,455 Posted June 27, 2013 Report Share Posted June 27, 2013 Swap the lambda first mate see how you get on and perform throttle body adaptation, if you still have issues, you can probably borrow another obd2 MAF to rule that out and go from there. Have you scanned ECU for DTC's? Link to post Share on other sites
leespiro 9 Posted June 27, 2013 Author Report Share Posted June 27, 2013 ive tried 2 maf sensors still the same not sure what you mean about the other stuff like throttle adaptation, and dtc's Link to post Share on other sites
leespiro 9 Posted June 27, 2013 Author Report Share Posted June 27, 2013 also i found this The Up-Stream Sensors are the same ( OBD I Vs. OBD II ).The plugs are not the same. The OBD I style plug is a simple 4 pin rectangular connector, as the OBD II plugs are ''D'' Shapped color coded connectors ( Brown or Black ).You can swap the plugs by removing the wires from the connector.Take in account that if you choose to use the OBD I sensor, you should only use it for pre-Cat ( up-stream ).Normally we put in OBD I O2 sensors on OBD II VR6' because they are cheaper and the OBD I type sensor has a longer wire, thus making wire routing easier. To acheive this, we simply replace the engine's wiring harness connector by an OBD I style connector for O2 Sensor # 1 and leave # 2 as is. So you now have both style connectors in pemanance on the harness.In your case, being that you have OBD I management, you should simply use the OBD I O2 sensor up-stream ( before the cat ) and plug the secondary O2 sensor port ( Bong ) after your cat on your OBD II Exhaust system.In your OBD I VR6 wiring harness, you have only one available plug for up-strem O2 sensor. Link to post Share on other sites
VR6Pete 1,455 Posted June 27, 2013 Report Share Posted June 27, 2013 Some interesting info there, although cant comment on validity. Here is the rods tech article: http://www.ross-tech.com/vag-com/cars/throttlebody.htmlYou can also perform this by disconnecting battery for a while, turn on ignition, the TB will make some noises, once it stops then start the car. Link to post Share on other sites
leespiro 9 Posted June 27, 2013 Author Report Share Posted June 27, 2013 ok will try that tomorrow should i put the 3 bar fpr back on Link to post Share on other sites
VR6Pete 1,455 Posted June 27, 2013 Report Share Posted June 27, 2013 Can't see it causing an issue, unless its faulty, however if your existing FPR is a known working item it might be good to re-fit and using the process of elimination to narrow down the fault Link to post Share on other sites
leespiro 9 Posted June 27, 2013 Author Report Share Posted June 27, 2013 Ok will start elimnateing tomorrow thanks for your time Link to post Share on other sites
VR6Pete 1,455 Posted June 27, 2013 Report Share Posted June 27, 2013 No probs, let us know what you find Link to post Share on other sites
Lukey. 381 Posted June 28, 2013 Report Share Posted June 28, 2013 Is that off an American how to? I'm pretty sure no uk cars have a post cat O2 sensor Link to post Share on other sites
VR6Pete 1,455 Posted June 28, 2013 Report Share Posted June 28, 2013 Good point, yeah we only have on lambda sensor here Link to post Share on other sites
leespiro 9 Posted June 28, 2013 Author Report Share Posted June 28, 2013 hi there ok this is waht i did 1st i changed the 4 bar fpr to 3 bar was even worse with that on wouldnt even stay running struggled to accerate so i put the 4 bar back on changed the ecu temp the blue connector and i swaped a few relays over from the doner car and put another maf on and bobs your uncle runningbut lumpy at 1st but he would rev up so i left it running ans it started to smooth out Link to post Share on other sites
VR6Pete 1,455 Posted June 28, 2013 Report Share Posted June 28, 2013 Excellent news matey. Link to post Share on other sites
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