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Okay, It's been a few tanks, and I can't figure it out. My mileage has been pretty good (23mpg city) for quite some time now, but it has suddenly gone to about 14-15 mpg the last four tanks. Here is the history of what was leading up to this: 1) Ignition switch burned out, so I replaced it. Everything worked fine, but I was not paying attention to mileage. 2) The car was being a little sluggish about a week later--poor acceleration, poor mileage. 3) It stalled in traffic, which resulted from loose battery cables (I didn't fully tighten them after replacing the ignition switch--ie, user error). 4) I tightened the battery cables. The acceleration was better, but the mileage did not improve. 5) I performed a tune up without replacing parts. No improvement in mileage. 6) It is about time for a tune up anyways, so I am about to replace the cap, rotor, spark plugs, condensor, air intake boot. Besides, unfortunately, I am going on a big road trip (already paid for it) this weekend. Perfect timing for the wonderful mileage. I read in Bentley that "high fuel consumption" is a result of a failed sensor. Which one? Well, they said to test it--only Toby has a tester. They also stated that it could be a mix up with the + and 50 wire vs the 30 and 50 wire (Bentley, 4-10.3 table A. "Basic fuel injection troubleshooting guide" entry #8). I don't think I changed any wires there, but here is a little story about the ignition switch: There was no ignition switch '71 t3 specific available, so I had to use a B*g ignition switch. The wire harness was not the same. I removed the wires (soldering) and replaced the same wires (matching the colors) to the switch. TherŠ? e extra terminal on the switch, so I left it empty. So, any hints on why I am suddenly getting 14 mpg? Steve ------------------------------------------------------------------- List info at http://www.vwtype3.org/list or mailto:help@vwtype3.org