Shakel

ECU, harness, injectors and ISV are from few Ebay junkers... fuel rail and pressure regulator are out of Audi A4 and customized to fit in 16v manifold, blue temp sensor and co pot are new from VW, knock sensor was already installed in the car (actually 2.0 16v stocked with two knock sensors). ECU seemed to be working ok because car started on the first crank after conversion. But now I doubt it, today I decided to make another test and pulled the throttle switches connector out, started the car, as a result RPM jumps up to 4000 and will not go down, is that a normal Digifant ECU behavior ?

Yep, it is Digifant I now...thanks mate!

It is a 2.0 16V. CIS-E fuel management converted to G60, no supercharger or turbo.

When ignition switch is on- ISV vibrates, started the car- idle feels like ISV is NOT working, turned the engine off, pulled the ISV connector out, started the car again- idle feels the same as before when was connected. Turned the engine off, pulled out the ISV connector, connected voltmeter to the connector, turned ignition switch on- volts are 12 from ECU. Started the engine- volts goes up to 13. connected a direct 12V to ISV (engine is running, ISV connector is out)- ISV starts working, idle changes... What the **** is the problem? is it a faulty ECU?

Hi guys, OK, I sort the idle problem. I made a mistake by not reconnecting the ISV intake air pip to the main air intake bore, I stupidly left the ISV intake open :oops: I drilled a new hole in the bore and connected the original 16V ISV pip in it sealed by a rubber ring. Last problem left is the ECU which is probably defected, it does not operate the ISV. Cheers

Hi there, just wanted to let you guys know that I really appreciate your help! I forgot to mention that I'm a new member here, great forum! :D Anyway, I think that the problem is a defective ECU, I'll try to have some luck tomorrow installing a second ECU from my friend's GTI G60.

blue temp sensor is new from vw, ISV is used (chipper from a wracked car). turning the switch on i hear a click from the isv, isv vibrates touching it. disconnecting the isv from harness do not change idle... keeps hunting. I'll check the TB to ECU line length later. thanks!!

Thanks, well the co pot ohm values across pins 1 & 3 shows 1370 min and 1900 max...are these normal co pot values?

I converted the CIS-E system to G60 in my 2.0 16v Corrado (used OEM fuel rail, G60 ECU, wiring harness, CO potentiometer, idle stabilization valve, G60 injectors, blue engine temperature sensor, K&N free flow air filter and 3 Bar fuel pressure regulator for this conversion). I used wiring diagram downloaded from:http://www.gironet.nl/home/cillari/techinfo.htm. the conversion ended up with two irritating problems: 1. Cold start problem, which can be solved only by disconnecting the CO potentiometer, doing that engine starts followed by small backfires. 2. When engine temperature is normal, rpm jumps up and down from 10000 to 14000, reconnecting the CO potentiometer do not help. I checked the ECU wiring about 20 times and all seems to be fine, checked for vacuum leeks- none, ECU vacuum line is connected to the throttle body, oxygen sensor is new, all sensors are grounded to pin #6 on ECU, ECU is grounded. What should be the problem? Is it ECU? CO potentiometer? Please HELP. Thanks!