I have a ZR2 and it is hesitating after the engine warms up for about 2 mins. I did a scan and it showed code p0410 the Air injector so i gone ahead and replaced that and still doing the same thing. I searched another thread and the guy mention that he solved the same problem by replacing a stuck check valve? Here is the link to the original thread:

https://blazerforum.com/forum/engine...7-p0410-16016/

My dad thinks it is the fuel pump but i dont want to throw anymore money that doent need to be throwing at i just want to solve the problem. Anyone have a clue?

 

P0410 will have zero effect on how the engine runs. The secondary air injection system is there to soley warm the engine up quicker to get the cat up to temp quicker so it can stop those nasty toxic gases earlier from killing us all.

 

*FIXED*

Thanks for the reply AJBert. I have solved that problem and it turned out to be the fuel pump. I hooked the engine up the the fuel pressure gauge tester and the car psi was at 50psi. I revved up the motor an the gauge needle stayed at 50... didnt even climb up to 55psi so to everyone in the future just remember if all of your plugs and wires etc is ok.. a bad fuel pump will cause your car to hesitate. I changed out the fuel pump along with the fuel filter and BAM the car is back to normal.