Throttle body

Check engine light on?

Last time it had a fuel filter?

The Medic

First thing would be to check the fuel pressure, low pressure due to a failing pump or clogged filter can cause this. You can "borrow" the tools to test the pressure at many auto parts stores. You should have between 60-65 psi.

I am with Steve, check the fuel pressure. Having had two Blazers with the same fuel pump as yours, I have replaced both of them. And they went bad right at the 150,000 mile mark. Also, they are a known common problem with S-Series trucks (Blazers, Jimmys, S-10s, etc).

Hi TERRY KAHN,

If you are interested in checking your vehicle's fuel pressure yourself here is a helpful link to an article from this site with step by step instructions and pictures explaining the process of checking the fuel-system-pressure-and-regulator.

https://www.2carpros.com/articles/how-to-check-fuel-system-pressure-and-regulator

If you need further assistance please come back to the site we are here to help.

Thank you for visiting 2CarPros.com.

Kindest regards,

Renee
Admin