I bought this car with intent to fix up but can not figure out this problem. When I start the car it goes crazy sometimes takes a min to start and the gauges go on and off for sometimes 10 mins before they stop and then everything is just like normal like nothing was wrong.

 

This is a earlier post that may give you some info? and some Video's related that could help.


https://montecarloforum.com/forum/fw...r-motor-12319/


https://www.google.com/search?q=gaug...w=1600&bih=786

 

What year is your Monte? The 2000-2005 Montes have a known issue with the gauges going bad. I had my temp gauge do that. Scared the heck out of me when I saw my temp gauge had gone past maximum.