owners manual Mini Cooper

owners manual Mini Cooper - year of production: 1961, 1962, 1963, 1964, 1965, 1966, 1967, 1968, 1969, 1970, 1971, 1972, 1973, 1974, 1975, 1976, 1977, 1978, 1979, 1980, 1981, 1982, 1983, 1984, 1985, 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000 - Mini Cooper workshop manual EN

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text version of content this owner's manual page from owners manual to the vehicle Mini Cooper, year of production 1961 - 2000:

ENGINEMANAGEMENTSYSTEM-MEMS Throttle housing Throttle position sensor Thethrottle housing is located between the inlet manifold and air intake hose and is sealed to the manifold by an ’O’ ring. The throttle housing incorporates a throttle disc which is connected to the throttle pedal via the throttle lever and a cable. There are two breather pipes connected to the throttle housing; one either side of the throttle disc. Whentheengineisrunningwiththethrottledisc open, both pipes are subject to manifold depression anddrawcrankcasefumesintothemanifold.When the throttle disc is closed, only the pipe on the inlet manifold side of the disc is subject to manifold depression. This pipe incorporates a restrictor to prevent engine oil being drawn into the engine by the substantially greater manifold depression. Mountedonthethrottle housing are the throttle position sensor and idle air control valve.Thethrottle position (TP) sensor is a potentiometer attached to the throttle housing and is directly coupled to the throttle disc. The TP sensor is non-adjustable. Closed throttle is detected by the TP sensor which initiates idle speed control via the idle air control valve. TheECMsuppliestheTPsensorwitha5volt supply and an earth path. The TP sensor returns a signal proportional to throttle disc position. Throttle disc movement causes voltage across the TPsensortovary.TheECMcalculatestherateof changeofthevoltage signal in positive (acceleration) or negative (deceleration) directions. Fromthis the ECM can determine the required engine speed, rate of acceleration or rate of deceleration and apply acceleration enrichment, deceleration fuel metering or over-run fuel cut-off. 8 DESCRIPTIONANDOPERATION

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year of production from: 1961

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