Hi,
Have you checked to see if there is an engine vacuum leak? That can cause a stalling issue. Also, in 1989, these vehicles were made with either a carburetor or fuel injection. Which does the vehicle have?
Start with checking for vacuum leaks. Here is a link that explains how it's done:
https://www.2carpros.com/articles/how-to-use-an-engine-vacuum-gauge
Also, if possible, record what it does so I can see and hear what it does. That may help me as well.
One more thing, take a look at this link. Id reviews the most common causes of a stalling issue at idle and how to fix one.
https://www.2carpros.com/articles/stall-at-idle
Let me know.
Joe
SPONSORED LINKS
Wednesday, March 16th, 2022 AT 6:12 PM