Mechanics

2.3L, 16V QUAD 4 CYL. DOHC ENGINE TURNS OVER NORMALLY BUT WILL NOT START?

1995 Oldsmobile Achieva • 182,665 miles

The problem started initially that the engine started, took trip across town, shut-off engine and when I tried to restart the engine all it would do is just turn over. Waited for approximately 20-30 min. And tried again and the engine started, ran good. Tried starting the engine the next morning and all it would do is turn over. I remover the fuel line from the fuel filter and had someone turn the key on and no fuel. I drained the tank and replaced the in-tank fuel pump, checked all wiring at that location and the connectors, all in good condition. Tried to start engine, turns over no start. Checked all of the fuses in the fuse panel, all are ok. Located the fuel pump relay and replaced it. Still no start.
Took digital volt ohmmeter checked resistance between terminals on the ignition control module connector got a 0.06 kilohms reading, which would indicate the coils were bad. Replaced both coils and still no start or spark. Replaced the spark-plug connector, boot and boot retainer. I have
also replaced the crankshaft position sensor, the fuel pump switch/oil pressure switch unit. Checked all grounding wires and battery connections all in good repair. According to the wiring schematic for this model there is a pink wire from the 20A fuse that is the hot lead to the fuel pump relay and the fuel pump switch. Used test to check that there was voltage at the relay female plug and also at the ignition coil module plug and they were hot when the ignition is on. The engine will still not start. I am at a loss as to what to check now. Is there a reset switch to clear any codes? Please anyone can you help?
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Cowdunge
June 20, 2012.



No reset for the codes as it will fix nothing anyway.

Did you replace the connector at the fuel pump module? Lots of issues with that connector. It is supplied with replacement modules and must be replaced.

Roy

ASEMaster6371
Jun 20, 2012.