1999 audi a4 quattro 1.8t. recntly had issues with a miss in cyl 3 and ran the car 10 miles home to garage and o2 sensor and catalytic converter glowing. I swapped injectors, coils, sparkplugs and none fixed the issue so with your guidance, I swapped the ICM and all missing was fixed. the thing runs great. A new problem sprang up pending the last repair. when I run the car, turn it off and re-start, it cranks for a 20 - 30 seconds before it starts now. The longer is sits, the easier it is to re-start. Any ideas? could a bad O2 sensor cause this type of problem?

 

replaced the coolant sensor....still doing it