G62 coolant temp sensor

G62 coolant temp sensor - the cylinder head: If the AAN G62...

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The 3B 20vt engine used the Multi-function Temperature Switch (MFTS) (aka "electronic thermal switch" in the 3B diagram below), located under the intake manifold on the auxillary coolant manifold, to send a coolant temperature signal to the 3B Engine Control Unit (ECU)to help control boost and fuel. (See link to SJM Autotechnik below) However, with the development of the AAN, the 1992-97 Audi S4/S6 ECU does not use the MFTS as a boost and fuel control data source; instead, it uses the signal from the ECU coolant temperature sensor mounted at the back of
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Unformatted text preview: the cylinder head: If the AAN G62 coolant temperature sender is broken, the AAN ECU may "think" its cold out all the time, leading to higher duty cycles on the injectors and, therefore, rich runnng conditions (which, by the way, can burn out the catalytic convertors) and poor fuel economy. Part No. is 035 919 369 M (KATE calls it a thermal switch - No. 9 Illustration 919-65 (A10Q, 1993)) The MFTS (F76 Electro thermoswitch) on the AAN is located somewhat as shown below (only more horizontal):...
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This note was uploaded on 04/15/2009 for the course MECH Mech 220 taught by Professor Ikovic during the Spring '09 term at NJIT.

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G62 coolant temp sensor - the cylinder head: If the AAN G62...

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