I have a1990 limina i just quit 2 weeks ago no check engine light or anything tried to get codes but just reads out 12 i changed the egr valve because it was junk and leaking also new plugs new oxygen sensor and idle air valve and still won't start and run took out oxygen sensor and it would start but not stay running and when it was running it ran lean any sugestions? i finaly gave up and towed it to a garage and still don't know what is wrong with it.

Got spark, fuel pressure, injector pulse, all basics here.

Why do you say it ran lean?

Got spark, fuel pressure, injector pulse, all basics here.

have sprak and fuel pressure had 40# at shrader valve but the mechanic told me t is the fuel pump with out a dout i guess he is going to change it