OBD1 throws a code 41?

Hello,

This is a stalls at idle problem which can cause this code as well

Code 41 = Ignition Control (EST / Bypass Circuit Problem)

This video can help you find a vacuum leak which can be the cause.

https://www.youtube.com/watch?v=LRKWV4Are5c

Also, you should service the IAC valve and throttle body which are normal service items.

https://www.2carpros.com/articles/idle-air-control-valve-service

and

https://www.2carpros.com/articles/throttle-actuator-service

Please go over these guides and get back to us. Please upload a short video in your response of the problem, so I can see what's going on. Ken