Anthony Boni
5+ Year Contributor
- 213
- 23
- May 13, 2018
-
Wrightstown,
New_Jersey
Hello,
I have a 90 TSI with a 91+ throttle body. I'm having many issues with my ISC position in DSM Link V3. It reads 120 when the car is cold but rapidly descends to 0 and stays there. I cannot put the car in "ISC adjust" mode because the car idle surges like mad and eventually dies. I'm running speed density, have verified I have ZERO vacuum leaks. I've verified base timing at 5* BTDC. Car idles pretty consistently @ 850-950 RPM when ground pin isn't grounded in Link. I've ran two new ISC motors and they all ohm tested good. Sent my ECU to ECMLink and they fixed a trace but otherwise stated the ECU operated correctly. Only thing left is the harness wiring for the ISC. Can anyone give me a hand in troubleshooting the wiring from the ECU to the ISC pinouts? I've looked for a guide on this but couldn't find anything. This is really starting to kick my a** and I could use some help.
I have a 90 TSI with a 91+ throttle body. I'm having many issues with my ISC position in DSM Link V3. It reads 120 when the car is cold but rapidly descends to 0 and stays there. I cannot put the car in "ISC adjust" mode because the car idle surges like mad and eventually dies. I'm running speed density, have verified I have ZERO vacuum leaks. I've verified base timing at 5* BTDC. Car idles pretty consistently @ 850-950 RPM when ground pin isn't grounded in Link. I've ran two new ISC motors and they all ohm tested good. Sent my ECU to ECMLink and they fixed a trace but otherwise stated the ECU operated correctly. Only thing left is the harness wiring for the ISC. Can anyone give me a hand in troubleshooting the wiring from the ECU to the ISC pinouts? I've looked for a guide on this but couldn't find anything. This is really starting to kick my a** and I could use some help.