Tighten those bolts! Check that the fuses and relays are all pushed firmly into place, it’s a start!

 

Cat may be bad and possibly falling apart or getting clogged.

 

So fuses good wires are good 4 7mm bolts of fuse box are tight an ecm connectors look fine cleaned ground next to driver stunt no change I had 08 hhr nd cat was bad car wouldn't run for more then few seconds nd ran like **** so I don't think it's the cat

 

code P0442 most likely means one or more of the following has happened: A loose or improperly affixed gas cap A non-conforming gas cap (i.e. not factory/original brand) A small leak/hole in a fuel vapor hose/tube Other small leak in EVAP system Faulty vent o-ring seal Defective vent valve Defective purge valve

code P0451 Defective EVAP pressure sensor Loose or missing fuel cap Clogged fuel tank pressure relief valve Broken, collapsed, or burned EVAP hoses/lines Cracked or broken charcoal canister

code P0454 Defective EVAP pressure sensor Clogged fuel tank pressure relief valve Open or shorted EVAP pressure sensor wiring or connectors Cracked or broken charcoal canister

code P0464 Intermittent open in the signal circuit to the FLS sensor - possible Intermittent short to voltage in the signal circuit to the FLS sensor- possible Intermittent short to ground in the signal circuit to the FLS sensor- possible Failed FLS Sensor / sensing arm stuck mechanically - likely

I suggest you inspect the fuel cap and the evap purge valve under the hood and the evap canister up over the rear axle beam , while you’re back there look for rodent chewed wires or a loose connection

 

Evap can with vent valve in back nd purge valve under hood have been replaced when I first bought car it had code for vent valve in back so I replaced whole thing didn't fix anything but code went away after I did so I guess I'll check all wires in back gas cap look oem yellow flex cap

 

Anyone tell me what this wire for its got connector and another black wire that doesn't go to anything nd not factory

 

If that is up under the car above the rear axle beam on the passenger side that’s the wire harness for the evap and fuel pump, fuel sending unit and fuel tank pressure sensor. Looks like someone has been there to repair faulty wires, the crimp connection is not factory

 

Yes you are correct fuel/evap harness can I replace wire harness or do they not sell that i could cut out an repin that wire any clue what that tan/grey wire for? The black wire they got going to it get sitting there an only but 4 inches of wire so no clue where that wire was supposed to connect to

 

Should be wire harness diagrams in this link from Donbrew

https://charm.li/

 

Thanks man going to cut out bad an run new wire an pin it see what happens