alright so my 07 trailblazer 4.2 WILL NOT STAY RUNNING IN COLD WEATHER!
i have cleaned the throttle body multiple times(dont suggest this i could eat out of it)
i have changed the cam position sensor
i have changed all plugs with iridium ones
when this all first started i put the code scanner on it and got misfire on cylinder 6 plus a bunch of other codes. so i figured it was plugs or a coil. i changed the plugs and switched the #6 coil to #5 and retested after doing this i now have multiple misfires. i have re snugged every plug and coil up so its not a lose connection. im about to try and change the vvt actuator tomorrow. another code says fuel is too lean in bank #1.
Could this possibly be an intake manifold gasket?
do i need to park it and trade it in when warm weather arrives?\
im about done with her it has 215k and has been a great car but its p**sing me off now/