if the injector fails to squirt correctly
and fuel pressure is low 0 to 30 PSI is low.
then see if pump has 12vdc cranking.
the best drawing i have , now updated, for voltages.
![[Image: 89-90ECUp0w.jpg]](http://www.fixkick.com/ECU/89/1990-scan-ECU/89-90ECUp0w.jpg)
and fuel pressure is low 0 to 30 PSI is low.
then see if pump has 12vdc cranking.
the best drawing i have , now updated, for voltages.
http://www.fixkick.com