Intermittent not starting issue?

Hi,

When it fails to start, I need you to try a couple of things. First, see if it will start if you use starting fluid. If it does and then stalls, we know it's a fuel-related issue.

If there is no change, I need you to check for spark at the spark plugs.

Here is a link that explains how this is done:

https://www.2carpros.com/articles/how-to-check-for-ignition-spark

This vehicle has a primitive crankshaft position sensor that may be failing. If it is, you will lose spark to the plugs. Take a look at this link:

https://www.2carpros.com/articles/symptoms-of-a-bad-crankshaft-sensor

Also, it would be a good idea to check for diagnostic trouble codes. This vehicle has an OBD1 system. You don't need a scanner to check for codes. All that is needed is a short jumper wire or even a paper clip. Follow the directions in this link and let me know if codes are retrieved and what they are:

https://www.2carpros.com/articles/buick-cadillac-chevy-gmc-oldsmobile-pontiac-gm-1983-1995-obd1-code-definitions-and-retrieval-method

Also, let me know if the spark is lost as well. I attached a pic below showing the sensor in question.


Take care,

Joe

See pic below.