Okay, since you don't seem to have the check engine light you have the Digifant II system. It was a long shot that you had Digifant I (with the check engine light) as they are mainly California models. You should have two small connectors under the shift boot, one balck & one white. Unfortunately the only way to connect to the ECM is with a VAG scanner or VAG-COM with the 2X2 adapter. The systemis pretty basic & usually doesn't provide much help anyway. Aside from possibly being the coolant temp sensor, I had one with the same symptoms that turned out to be a problem with the ECM. Once it warmed up it would run very rich & begin flooding out.