![]() ![]() Getting that out of the way makes it a lot easier to access the bolts.ģ. Unplug the plug on the EGR, it's one of those "squeeze the tab and yank" plugs. Start by following the small wiring bundle traveling under the throttle body until you find the plug. Ok, so where is it? You likely can't even see it, and won't actually see it until it is removed from the car. Depending on how much of a contortionist you are, you may find that removing the battery (2 10mm nuts on the top battery bracket, plus 4 17mm (or is it 14mm) nuts to remove the strut tower brace.Ģ. Alternately, a latex/nitrile/vinyl glove stretched over the throttle body works great too.Ĭ. Using a clean rag, protect the throttle body from any debris. You just need the pipe closest to the throttle body removed so you can reach under the throttle body to get at it with a socket wrench.ī. For the stock intake, I'm going to guess a 10mm, but I haven't seen my stock intake in over three years so I'm honestly not sure. If you have an aftermarket intake, chances are the hose clamp will use an 8mm socket or a screwdriver to loosen it. Obviously, the intake needs to get out of the way. The EGR valve is located on the underside of the intake manifold, near the throttle body.Ī. The more modded your car is, the easier this will probably be. Begin by gaining access to the EGR valve. Pump the brake pedal to ensure that the car's electrical system is discharged. Before starting, disconnect the terminals on the battery using a 10mm wrench (a 10mm deep socket works). Brake Cleaner: non-chlorinated so that you don't die.Ī. Optional: 10mm deep and 17mm (14? confirm this) sockets for removal of battery tie-down, battery terminals, and strut tower brace. 10mm or 8mm socket, optionally a phillips or flat screwdriver (for removal of intake). 12mm 6-point socket: shallow socket, and no huge ratchet heads Never fear, cleaning the EGR valve is pretty simple after the first time you've done it. Note: There is a revised EGR valve part number (note to kansei: look this up), but from what I've been told the revised part in no way fixes this "problem". If I find out about a cleaner that can clean it well without that side effect, I'll update this. Warning: Using harsh cleaners (such as the brake cleaner everyone uses) on the EGR valve will shorten the timespan between cleanings, eventually to the point where you find that you need to clean it every 3k miles when you change your oil. When this happens, people report a rough idle, and if it gets very bad (due to high mileage, bad gas, different driving style, etc) it can cause the car to stall at idle and throw a check engine light code (EGR insufficient flow or something similar). On the 3rd Gen Proteges (2.0 litre FS-DE, gods greatest gift to mankind), the EGR valve gets gummed up with carbon deposits thanks to how woefully rich the cars run on the stock ECU. If you go through the guide and are a kind individual, take pictures along the way and send them to me via a PM or an e-mail Your local O'Reilly Auto Parts store also offers free Check Engine light testing to help you begin your diagnosis and find the best solution.I'll add pictures to this the next time I do this (probably the first week of June, no time right now ). O'Reilly Auto Parts offers a selection of replacement canister purge valves and purge valve solenoids for most vehicles to help you make your repair. If you suspect you have an EVAP system leak or that your CPV is failing, it's best to repair the issue as soon as you notice there is a problem. In some cases, a malfunctioning CPV can also cause the vehicle to fail an emissions test. Damage to any part of the EVAP system may also cause fuel vapors to escape, leading to fuel loss, odors, and Check Engine light activations. If the canister purge valve becomes clogged or fails, it can cause a number of issues, including reduced engine performance, decreased fuel efficiency, and increased emissions. The canister purge valve is controlled by the engine control module (ECM) and is designed to open at specific times during the engine's operating cycle to allow fuel vapors to be burned in the engine. This process helps reduce emissions and increase fuel economy in the vehicle by reducing fuel loss due to evaporation. The canister purge valve (CPV), also known as a purge valve solenoid, is a main component of the evaporative emissions (EVAP) system which recirculates fuel vapor from the fuel tank to the engine intake manifold.
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