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On 2 Jun 2002, at 0:49, Mike Wodkowski wrote: > Checked the head temp sensor before I started the car today: 1800 ohms. > Drove it a few miles to my studio and tested it there: 180 ohms. Okay, I finally remembered to get out my Bosch manuals and see what they said about the normal range of these sensors. Here's what it says: 14F: 7-12 kOhms 68F: 2-3 kOhms 122F: 0.68-1.0 kOhm Since this is in the head, the temp can go well above 122F, so I suspect that 180 Ohms is not unusual for this sensor, when hot. I've taken one of these sensors apart and from the way they are made I think there are only 3 possible failure modes: shorted, open, or intermittent. I really think this one is fine. You also mentioned that you replaced the fuel pump relay and this seemed to cure the running-on problem. I really don't think it could, since the fuel pressure will stay up for quite a few seconds after the pump shuts down. If you don't believe this, just disconnect the pump fuse or the pump relay plug sometime and see how long you can keep the engine running with the pump off. Of course this is under no load, but that would be the same as when you shut off the key. If it was the main FI power relay that was sticking, that would be completely different, as shutting off the power to the injectors should stop the FI instantly, even if the fuel line is under pressure. - ******************************* Jim Adney, jadney@vwtype3.org Madison, Wisconsin, USA ******************************* ------------------------------------------------------------------- Search old messages on the Web! Visit http://www.vwtype3.org/list/