Engine cranks but does not start

1995 OLDSMOBILE ACHIEVA

147,000 MILES • 2.3L • 4 CYL • 2WD • AUTOMATIC

ANTHONY SLOAN

MEMBER
1 POST

Went to store turned car off went to turn back on would not start.Changed TPS, changed crank sensor, changed coils, plugs, ignition switch, starter, fuel pressure good, but no pulse to injectors. Fuses all good and relays. I'm at a loss Vehicle is listed above with a quad four. Car will not start. Turns over but no start.

Aug 1, 2020 at 10:50 AM

KASEKENNY

✓Experienced Mechanic
18,907 POSTS

So the PCM controls the injector pulse and it pulses the injectors based on the crank signal. So that means we need to verify the plugs are firing and that will prove that the PCM is getting the crank pulse because it fires the plugs based on the same signal. So just pull a spark plug and hold it against the block and crank the engine to see if you are getting spark to the plug. If so, we can look further into the injector drivers. You have two of them, one for injectors 2 and 3 and one for 1 and 4 but they both come off the PCM so we will need to look into that.

Also, when you turn the key on, do you hear the fuel pump come on?

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Aug 3, 2020 at 12:34 AM

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