Rebuilt the engine, started engine, fired right up let warm up, after temp reached warming I have a little acceleration and got check engine, replaced coolent temp., map, and Took fuel pressure found pressure to be erratic, isolating to rpm between spec. Of 58psi and 70 psi , replaced both pumps, took compression test within spec., vacuem 18.5 when cold then going down,to 17.50+ - .50, notice one o2 sensor reading .015 volts and 0 what should be checked voltage should be 3-5 volts from wiring from ecm what from o2 sensor where else should be checked and also seems like I have a miss from Injector or ignition. Need direction
Oct 18, 2015 at 11:24 AM
