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Dave Nova
Dave Nova, Oldsmobile Tech
Category: Oldsmobile
Satisfied Customers: 19451
Experience:  ASE Master Certification. GM World Class Certification
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Oldsmobile cruiser: Have a1989 cutlass crusier 2.8 engine not

Customer Question

Have a1989 cutlass crusier 2.8 engine not letting injectors open have changef two new computers, changed fuel pressure regulator, crank sensor, wasnt firing either but crank sensor solved that. Put a rail on with different injectors that i knew were working although they come from 3.1they appear to be same still injectors not spraying they got fire coming to them. The return line also keep pushing gas back to tank
Submitted: 1 year ago.
Category: Oldsmobile
Expert:  Dave Nova replied 1 year ago.
Do you have access to a test light?
Customer: replied 1 year ago.
Expert:  Dave Nova replied 1 year ago.
Disconnect the electrical connector at the ignition control module. Turn the key ON. Connect test light clip to positive battery terminal, then repeatedly touch the test light probe to the purple wire at the ignition control module connector. The injectors should pulse each time you do this. If they do, the ignition control module will need to be replaced.