Vacuum leak

[vbrad511]

Oreilys and Autozone both can scan here, any of their stores.Not sure about Advance or Napa.

 

[AgPete139]

Hm. Well, not here. Good to know. Where are you ?

 

[SenorNoob]

Apparently not relevant to the OP, but I had exactly the same problem once right after it backfired on startup.

Turned out I blew a crappy vinyl vacuum cap off the very bottom fitting on the intake..

There is no way to see it from above. Or the side for that matter. I just had to feel for the air being sucked in.

 

[vbrad511]

Well the issues are not resolved. Truck runs much better, but still throwing all 3 O2 codes and the purge system code. Senor, was that cap on the plenum, fuel rail, or the actual intake under everything else?