Stalls after it warms up

It sounds like the tachometer has stopped working because the ignition module might be the wrong one. The engine runs perfect when cold and then stalls when warmed up means one of the things a vacuum leak or you have a coolant temperature sensor that is messing up.

Here are guides you can go over to see if you can find the problem:

https://www.2carpros.com/articles/stall-at-idle

and

https://www.2carpros.com/articles/how-to-use-an-engine-vacuum-gauge

Please run down these guides and report back.

Cheers, Ken

Checked for vacuum, did the squeeze test and sprayed carburetor cleaner on all vacuum connections. aAll checked out good. Where is the coolant temperature sensor ?

Here is the engine coolant temperature sensor location (below):

We figured out the problem. There is oil in the distributor. It is a cam angle sensor type . Is there a seal at the base on the distributor shaft? What is the procedure to repair or replace it?

There is no seal but the distributor can become worn allow clearance between the shaft and the housing. I would get a rebuilt unit and install it.

Please let us know if you need anything else to get the problem fixed.

Cheers, Ken