bob_diesel
Well-known member
My '99 A4 Jetta has been hard to start when hot since I bought the car. This is my third VW diesel and I thought that this car would operate like the others. I was used to putting the key in the ignition and b-a-r-e-l-y turning the key to have the 'beast' start. The timing is good, nothing sticking with the crossover valve, no fuel leaks, everything looks as it should. Recently, I thought that the coolant sensor was to blame. I ordered a new one, and while waiting for delivery I disconnected the plug. The engine started up right away, and with great vigor, very similar to the way the two older models would start. I put the new coolant sensor in, and back to difficult starting.
Question for all:: are there different software versions for the different model years??
My feeling is that this is a software issue since the car started better with the sensor disconnected??
Any and all thoughts.
Question for all:: are there different software versions for the different model years??
My feeling is that this is a software issue since the car started better with the sensor disconnected??
Any and all thoughts.