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Yea, Jim was right that vacume leaks only cause higher idle and only really affects the throttle body EFI. the only major affect this will cause on consumption is when vacume leaks are around the pressure sensor. The clamps around the manifold I mentioned is just in case your rubber seals are so loose you can turn them, I had a neat whistling noise until I clamped them then I purchased new ones from west coast metric . A leak around the pressure sensor may cause the brain to think vacume as dropped and throttle is open so more gas is injected. Have you pulled a pair of injectors out while they are still connected, placed them in a jar , cranked the engine (coil disconnected, important) or moved the throttle while ignition on but coil diconnected (very important)that is if you have that accelerator pump option (makes clicking sound when throttle is moved??? You need two people: one to crank and the other to observe the jar. If you have that throttle pump option that turns the injectors on and off every time throttle is fully turned back and forth, then you can do this yourself. You will see your injectors squirting on and off, see if they are actually going on and off like a machine gun with a squirt but if on is continuosly injecting then something is wrong. I have never seen this before but if the brain or wiring has an internal short to power then this can happen. I am just shooting in the dark with this comment but I have a suspicion. It is very important to check pattern, round piramidal cone with spray even all around with no steams peeing). If an injector is spraying continuously disonnect it from its wire and if it still spraying then it is stuck open. Check both pairs. Some people may think this is dangerous because gasoline will be spraying in a jar. Use common sense , disconnect coil from positive or hot lug in front of the coil that is attached behind the nut, and no smoking. This will show that the injectors are acting normal and not strange. THis is just in case you have not done this . You might have done it before. On the pressure sensor with the ground lug, you have one that has this and the other does not have one. They are the same. One unit uses actual wire to ground and the other uses where it is screwed in , this sometimes is not a very good connection. Have you checked your fuel pressure ? it mustbe around 28 lbs . If it is too high you will have real bad gas mileage, I thought I heared a listee that had the gas pressure set so high that a constant gas smell was present and low gas mileage was the norm. Just like yours. On your temp sensors resistance: the one on the head ( according to my special EFI book, sensor II) is 1.5k ohms to 2.5k ohms in room temperature. No more than 2.5k ohms, more than that will cause more gas to flow in. The sensor will think it's cold when it is not. The other sensor on your manifold is the air temp sensor. This should be not more than 300 ohms at room temperature,more than that the mixture will be a little richer. you must check it across the terminals. Make sure you check your fuel pressure, this is most common after the pressure sensor. LEON MARTINEZ 1969 SQUAREBACK EFI/AUTO SAN DIEGO AND TIJUANA ------------------------------------------------------------------- List info at http://www.vwtype3.org/list or mailto:help@vwtype3.org