Doesn’t start so good at times . It’s idles so low it Boggs completely down and cuts off. Loss of power, rpm gauge goes up an down when idling funny! But there no check engine light on. 202281 miles on it. Is a sensor going out or what exactly ?

What is your question?

The more u drive it . U can hear and see the rpm gauge jumping up and down , sometimes it just starts fine , but then sometimes it Boggs down and cuts off, very weak , loss of power too

What makes this problem better or worse?

The more it’s being drove

How long has your 2003 Chevrolet Blazer had this problem?

A month