Davids_s

So i'm having some problems with my 1991 audi coupe b3 FWD. it starts just fine when cold, but it doesn't start when warm. It sometimes starts if i remove the plug for the coolant temp sensor. But coolant temp sensor is not the problem. I have replaced both the sensor and the plug. My last option is the crank position sensor, but i have no idea where it is located. I have a 2.3e engine, and i'm assuming that is is an NG. Does anybody have any ideas what could be the problem? And where is the crank position sensor if it is the problem?

cuatrokoop

Sensor is on the left side of the engine, at the bell-housing area. There's also a sensor in the distributor for cam position that will cause a no-start.

Also, check for vacuum/breather system leaks. My 7A would die when it got warm/hot and be a royal pain to restart. Turns out a nipple on the back of the valve cover had become exposed to atmosphere...Plugged it off and it was fine.