Reddit reviews CRC 05078 Throttle Body and Air-Intake Cleaner - 12 oz.
We found 2 Reddit comments about CRC 05078 Throttle Body and Air-Intake Cleaner - 12 oz.. Here are the top ones, ranked by their Reddit score.
Cleans gum and varnish from the throttle valves and throttle bodyAllows easier starting and smoother engine performanceEliminates hesitation and rough idleRemoves harmful depositsApplications: Fuel injected gasoline engines (both throttle body & multi-port)
Start by cleaning the throttle body. This stuff is fine:
https://www.amazon.com/CRC-05078-Throttle-Air-Intake-Cleaner/dp/B000M8PYO2
(Also inspect the throttle cable, which can sometimes stick).
A couple of things here.
#1, and a pet peeve of mine, SeaFoam™ isn't a cleaner at all, and really isn't a throttle body and intake cleaner. It's a mixture of snake oil (errrr, "proprietary hydrocarbon blend") and rubbing alcohol (isopropanol). It doesn't belong in your engine, in your intake manifold or in your crankcase.
#2, your high idle and IAC related codes sound like a bad vacuum leak. Do you have a scan tool that reads live data? Or a bluetooth OBD-II adapter and an app like Torque Pro for your phone or tablet? You need to find and fix the vacuum leaks first. It's easier with an OBD-II scan app or scan tool watching live data graphs for the O2 sensor.
If you have a scan tool or scan app, drive the thing to get it warmed up, and when you get back to the shop/garage, set up your scan app/tool to graph the upstream O2 sensor voltage (bank 1, sensor 1). It should fall into a nice oscillating rhythm. Then, spray throttle body/intake cleaner around (the kind that comes in a spray can that says "Throttle body cleaner" or "Throttle body/Intake cleaner.") your intake manifold gaskets, your fuel injector seals where they go into the intake, and other connections and sensors on the intake. Do not use "carburetor cleaner" or any cleaner where the SDS lists alcohol of any kind in the ingredients. I use this stuff amzn.com/B000M8PYO2 because it's acetone based and contains almost no alcohol of any kind. Watch the O2 sensor voltage graph as you are spraying the cleaner around places that might leak. When you hit a leak with the cleaner, the O2 sensor will swing way off in the rich direction. Note where all the leaks you can find are and repair the leaks then verify that you've fixed the leaks with the cleaner again. If you don't have a scan tool, you can still use the cleaner to check for leaks. You should hear the engine idle speed increase slightly when you hit a leak with the cleaner. A scan tool is much more sensitive than your ear, but you should hear the difference on any really bad leaks.
#3, you probably need to clean those IAC passages and the IAC valve plunger with the same throttle body and intake cleaner you used to check for leaks.