Question about Oldsmobile 88

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Why does my engine turn over but not start?

Oldsmobile 1997, eighty eight

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  • Oldsmobile Master
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Hi there:
You will have to pinpoint what the engine is missing...
- Spark
- Fuel
- Compression

All three of these are tested when the engine is being cranked over. There are two way of checking for fuel. Fuel pressure and fuel trigger. Both are very important and must be present for the engine to start. Fuel pressure is self explanatory. You just hook up the gage and see what the reading is. Fuel trigger is check with a noid light. The injector gets unplugged and the noid light gets plugged in to the injector clip. With the engine cranking over, this light must blink. This is the signal to the injectors from the computer. You can have all the fuel pressure in the world, but it wont matter if the injector is not pulsing gas into the cylinder like it should.

Compression tester, spark tester, fuel pressure gage and noid light are all accessible at your local auto store. All three tests play a very important part in diagnosing a no start condition. Be extremely careful when doing these tests.

Hope this helps; also keep in mind that your feedback is important and I`ll appreciate your time and consideration if you leave some testimonial comment about this answer.

Thank you for using FixYa, have a nice day.

Posted on Feb 13, 2012

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  • Contributor
  • 2 Answers

First make sure you have enough fuel in the tank, 2nd check all fuses for bad ones(ECM)fuse will cause to turn over but not start.

Posted on Feb 13, 2012

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SOURCE: 1990 Oldsmobile Eighty Eight Stalls after hot

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SOURCE: how to replace the ignition module in a 1993

Find coil pack I think it is on the front passenger side. Disconnect negative battery cable. Remove electrical connector from module. Remove the four or six bolts that fasten the coil pack/module to the motor. Mark location of coil packs before removing from module. Replace in reverse order.

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