Hi all! My 90 Honda Accord Ex is having some trouble. While driving, the check engine light will come on, then about 5-10 seconds later the car shuts off. If you try to immediately crank it, it will only turn over, but usually does a couple of minutes later. It may not do this again for weeks, but it has now been happening more frequently and yesterday it took over an hour for it to start. It has also started to not crank immediately, even after it has not been driven for a while. Any ideas?

1990 Honda Accord Ex, 4 cyl