66 Pontiac Catalina
My Pontiac Catalina will sit and idle for
about 10 minutes,then shuts off, some time
it will start right back up some time it won't,,,
could it be my neutral switch going bad.
Sounds like a failing ignition coil or condenser, if not equipped with the optional transistorized ignition. Sometimes the ignition coil will work fine when cool or cold but break down and fail when it gets it gets hot. I'd suggest waiting for it to not want to start and see if you have no spark. If you don't, those are my two first suspects. HTH. - Jim
I'm not sure if it is , what is the ignition coil and condenser,,,,no clue but I had a electric ignition put on it a few years ago
My bad ,I meant to say I had an electric distributor put on it
If it has electronic ignition then your describing the classic ignition module failure, it will run fine cold but when it warms up it quits, once it cools off the cycle will start all over again. Repalce the ignition module, it is located inside the distributor, and will have 2 wire connectors attached to it held on with 2 small bolts, when replacing make sure you use the supplied heat transfer compound on the back of the replacement module, if you don't use it the life of the module will be greatly shortened. HTH
Yes,, I've put in a new module and done all of that,, just can't figure,why it does that.
If you have a new module and it still does it then replace the pickup coil inside the distributor, and make sure the ground strap is there for the coil, and while your there look at the ignition coil, see if there are any heat marks on it, usually around the outside around the metal cage, if you see any replace the coil also. The system is fairly simple, barring any wiring problems only three things can cause this, module and you have already replaced it, distributor pickup coil, and the ignition coil itself
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