w4c66
Junior Member
Making all kinds of discoveries as we pull apart the upper engine on my son's new (to him) '08 GT. After installing new plugs and coil packs the car threw a P2004 code. This car has 180k miles and the intake manifold and the butterfly plates are covered in carbon buildup. That of course may be contributing to the error code, but then I noticed two of the plates missing on bank 1 (cylinders 1 and 3). Just the plates are missing, not the hinged brackets.
I know there's been a 360 on the plate deletes for non-modified cars and we're keeping this thing stock so I rather not do a delete (the actuator is hopefully fine and it's just a combination of the crud and missing plates).
I'm assuming there's no easy way to get new plates on these two valves, so I guess I can either leave them as they are and get a tune to remove the code, or else if possible replace just that bank of valves instead of the whole manifold?
Also, I've seen all kinds of recommendations for cleaning these manifolds, but most of the cleaners I've seen used are corrosive to either the plastic/rubber (degreasers like brake cleaner, throttle body cleaner, etc) or corrosive to metal (purple power). The best might be seafoam and/or dawn dishwashing detergent?
I know there's been a 360 on the plate deletes for non-modified cars and we're keeping this thing stock so I rather not do a delete (the actuator is hopefully fine and it's just a combination of the crud and missing plates).
I'm assuming there's no easy way to get new plates on these two valves, so I guess I can either leave them as they are and get a tune to remove the code, or else if possible replace just that bank of valves instead of the whole manifold?
Also, I've seen all kinds of recommendations for cleaning these manifolds, but most of the cleaners I've seen used are corrosive to either the plastic/rubber (degreasers like brake cleaner, throttle body cleaner, etc) or corrosive to metal (purple power). The best might be seafoam and/or dawn dishwashing detergent?