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:
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:
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:
Also, let me know if the spark is lost as well. I attached a pic below showing the sensor in question.
See pic below.
Image (Click to make bigger)
Monday, February 6th, 2023 AT 9:23 PM