i just got me a 98 blazer and im having problem with it studering. when i put it in gear give it a lil gas and it studers but if i gas it no studer. the guy i got it from said it was the cat. so i took it to autozone and codes on misfire, vacum leak, and cat misfunction pop up. any ideas?

 

I would go with replace the intake gaskets, I wouldn't rule out the Cat, and I would do a good tune up cap, rotor, coil, plugs, and wires. check under the air box tube for a worn out PVC valve line. and replace what vacuum lines that aren't hard plastic. if you still have a misfire I would look at the ignition module on the side of the coil the pickup under the cap and last but not least the crank pickup under the engine by the harmonic balancer

BTW this isnt the spot for this type of question. Check the form over the answer would have been there and I'm no better in responding.

 

*Moved to a new thread in 2nd Gen Tech* - Please be aware of the thread topic to which you are replying to and the section it is posted in; ensuring that the nature of your reply is in the scope of the topic being discussed and that it will not detract from the thread author's original concerns.

What are the specific OBD2 trouble codes (Pxxxx)?

 

like said earlier cap and rotor could be a possible issue if you are getting water inside it will cause a misfire.