From: shadowrunner (dgoldste at orion.ramapo.edu) Subject: TPS sensor The TPS IS adjustable. There is a plug for an adjustment screw. You pull out the plug, carefully. You turn the ignition on but the engine is off. You put a volt meter across the connector at I think B & C terminals and you should measure a voltage of 0.48 vdc, if not turn the adjustment screw with a jewler's screw driver. - thins is from the Doug Roe book.