No Spark For 1992 Olds Question:

The no spark for 1992 Olds came about after it quit on me yesterday and following ATS course, I found it has no spark. As per your ATS lessons, this problem is caused by faulty crank sensor and ignition module. I first replaced the crank sensor and found still no spark. Went and got a new ignition module and same thing happened. But after spending all these money for parts, I still have no spark? What am I doing wrong? Is my engine computer buggered up too?

No Spark For 1992 Olds ATS Fix:

In this no spark for 1992 Olds problem, although ATS fixes tells you to suspect both crank sensor and ignition module, there are a few tests involved before replacing those parts. Examples:

Did you check if the crank sensor has proper ground and power supplies? If you requested the ignition wiring diagram, you can see the ground and power supply wires. Always go to the basics: Ground wires should read 0.250 volt or less with key on engine off. Power wires always give you around 12 volts with key on engine off.

These simple tests will tell you if there is a problem with the sensor or ignition coil. The same is true if the wirings connected to them. Those parts might be OK but if the wires are shorted because the insulation is bare, your new parts will not work either.

Finally, a lot of local parts stores can test those parts for you and they can tell if the parts are OK or not. If they say the parts are tested OK, then it gives you a red flag to test the wires or the ecm (engine computer). Again to test the ecm, all you do is test what? The ground and power supply readings at the terminal of the ecm with key on engine off PLUS, the reference voltages. This is the most basic tests of ATS troubleshooting and if you use this method, you will solve about 90% to 95% of engine electronics problem. To get a one on one online mechanic’s assistance, please contact ATS.

Thanks!

Recommended Crank Sensors