electrical problem i think?

Has your ballast resistor been replaced? If so, do you know the PN? There are a lot of them out there and very few are right for the Mopar ignition system.

Are you saying the ballast is near the intake manifold? That sounds like an abnormal position for it. For the /6 it is often on the firewall over on the passenger side. Ballasts being warm/hot is normal but too hot is not.

As said, there are a lot of causes for this. Any more info on exactly how it acts up and behaves may be helpful to narrow this down.

Do you have a voltmeter? If so, that would be quite useful in determining if the ignition system is at fault or not.