
They are more than concepts they're thought starters for enthusiasts who want to express themselves via their H3 or H3T.' 'More importantly, they are based in reality with mostly bolt-on components attainable by any enthusiast who wants them. Thank you.'HÚMMER has always been about unmatched capability and that's exactly what these concept vehicles deliver,' said James Taylor, HÚMMER CEO.
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If there is anything that you feel could improve the article, please feel free to comment or message. Good luck figuring out what is wrong with your H3. Fuel Tank Pressure Sensor– If the fuel tank pressure sensor has gone bad, it can cause all sorts of problems, including the P0442 code.Just be aware that it may take the engine several cycles clear the code.
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So if it’s the first time that you have experienced this issue, you may want to go ahead and tighten the cap and see if the code clears itself.


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There’s a great YouTube video on diagnosing the problem below, as well as how to replace the part. There are a few clips that you need to find and remove. This is especially true right after you fuel up.It’s really easy to replace. When it goes bad, it typically causes issues with the vehicle’s idle speed. EVAP Canister Purge Valve– The most common culprit with the P0442 trouble code and the Hummer H3 is going to be the vapor canister purge valve.The most common problem is far and away the first one listed below. There are many things that can cause the P0442 trouble code on the Hummer H3. When the Hummer H3’s computer detects that the EVAP system is not holding any pressure, it will throw the P0442 code. The EVAP system captures all fuel vapor from the fuel tank and sends them to the engine’s intake in order to be ignited in the normal combustion process. The code technically stands for:Įvaporative Emission System – Leak Detected P0442 is a general OBDII trouble code, which means it has the same meaning regardless of who manufactured the vehicle.

There should be no noticeable effect on the way the engine runs when driving Other than the difficulty in starting, the P0442 doesn’t seem to cause any other problems (at least in the short-term). If you’re old enough to have driven a carbureted vehicle, the old stomp the gas and crank the engine method does actually help start the engine in this situation. Then, it’ll either start on the second try, or after cranking the engine for a while. You’ll fill up the vehicle and it just won’t start. This is the most common symptom of this trouble code. After which it’ll be difficult to start the engine. With the H3, P0442 will often be thrown after the engine after refueling. Here’s a great video that shows the evaporation purge valve being replaced: It’s typically not going to be a problem that’ll lead to an immediate breakdown, but it should not be ignored. This code number references a number that is given to you when you plug your vehicle into a OBDII scanner. One of the most common trouble codes with the Hummer H3 is the P0442 code.
