Fuel Injectors Options

[Bullet]

I was Looking at buying a new set of injectors, And i was woundering what is the differance between the injectors for a 73-74 2.0 and a 75-76 2.0 at my cost i can get the 73-74 injectors at $44 each and the 75-76 for $108. I would like to know if i can use the 73-74 injectors on my 75 2.0?

[Bruce Allert]

The part # for the new injectors are ( 0 280 150 019 ) that is a Bosch #.

Yup, that's the same # my 74 injectors have along with a VW # of 039 906 031.

Have you traced all the wiring of the FI from the ECU to the various connections via an ohm meter?
Here's a list of the contacts from the ECU to the various wire ends. The connection into the ECU has a small area beside each wire terminal big enough to write a small number... I counted down and numbered each terminal. This helped to follow which end was which & kept me from getting it mixed up.

1. Temp Sensor I
2. Not used
3. #1 Injector
4. #4 Injector
5. #2 Injector
6. #3 Injector
7. Pressure sensor, primary winding
8. Pressure sensor, secondary winding
9. Throttle switch (full load signal)
10. Pressure sensor, secondary winding
11. Ground, engine
12. Trigger points, common
13. Temp sensor I
14. Not used
15. Pressure sensor, primary winding
16. 12V power (from relay board)
17. Throttle switch
18. Starter motor (terminal 50)
19. Fuel pump relay
20. Throttle switch
21. Trigger points
22. Trigger points
23. Temp sensor II
24. 12V power

.......b