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Evap Canister Purge Valve

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Where is the EVAP purge valve located?

Anyone that have a picture, there is valves everythere in the engine compartment!

The car is 996 TT-03

See atachment if anyone can understand that better than me....

These 3 pictures show the Purge Valve located on the engine of a 2002 996 tt.

The purge valve is part of the fuel vapor system, that is why it is not in your vacuum hose diagram. Why do you want to know about the Purge Valve?




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I have the fault codes P0172 and P0175, this codes could comes up if it's a problem with the purge valve, mag sensor, leaking injectors or an leakage in the vacuum system.

So I wants to check if it's any problem with the purge valve.

P0172 Oxygen sensor adaptation (fuel trim), at idle, for Bank 1, below limit.

P0175 Oxygen sensor adaptation (fuel trim), at idel, for Bank 2, below limit.

I think this could be a code for 1) Mass air flow senosr, 2) fuel pressure, 3) Purge valve. Because the code terminology is so poor, can you look at the OBD2 "Freeze Frame" information, and report the Fuel Trim numbers? It is extremely important to know whether the fuel trim is positive or negitive.

You could remove the purge valve and bench test its operation. But if you disconnect it or plug it, you may get more codes.

Please let me know what the Freeze Frame Fuel Trim numbers are. Thank you-Gary

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