When the MIL or check engine light flashes, it means you could be damaging the converter! Get a rubber hammer and bang on the conveter, Hear any rattling inside it? if yes it's gone and needs to be replaced. I would pull the spark plugs and check thier condition, also the wires. Misfire can be bad plugs or wires!

Answered by merlin2021 (expert)
18,145 answers provided

This sounds like the classic "EGR vavle sticking" open.

Answered by rayt333
0 questions asked

You have a common problem most blazerowners have-egr valve clogs up-simple to clean with parts cleaner and a new gasket, or replace it. autopartwarehouse.com, Carbon builds up on it and it sticks and your idle is in the crapper-and it only takes a really small amount of carbon buildup to start the problem. Help yourself by using 89 oct gas verses regular to reduce the carbon buildup. You also need to learn about the fuel injector spider line assy-they are prone to leak and code out as a random misfire on number 3 cyl. Your year has a seperate spider and fuel pressure regulator-and plastic fuel line, they are not hard to change out and a dealer will want $1000.0 to change-you can do this with a friend in about an hour.

Answered by tbixster
1 question asked