Sabre Posted May 1, 2009 Share Posted May 1, 2009 What is the function of the probe/monitor on top of the 300 TDi between the tappet cover and the inlet manifold ? Square terminal with 2 wires. Sits in the middle of the engine Advice appreciated Quote Link to comment Share on other sites More sharing options...
Pete Attryde Posted May 1, 2009 Share Posted May 1, 2009 I believe it is for the EGR system. It is coolant/cylinder head temperature. Pete. Quote Link to comment Share on other sites More sharing options...
stageonesimmo Posted May 1, 2009 Share Posted May 1, 2009 Yip, that it is. Quote Link to comment Share on other sites More sharing options...
Guest DiscoTD4 Posted May 2, 2009 Share Posted May 2, 2009 what year TDi please ? If the ECU model then it's the coolant temp sensor used to determine injection advance and fuel quantity and 'talks' to the ECU. There is a separate temp sensor on stat housing used for the temp gauge. Cheers Quote Link to comment Share on other sites More sharing options...
Sabre Posted May 3, 2009 Author Share Posted May 3, 2009 what year TDi please ?If the ECU model then it's the coolant temp sensor used to determine injection advance and fuel quantity and 'talks' to the ECU. There is a separate temp sensor on stat housing used for the temp gauge. Cheers Model is 1998 3-door, but fortunately not an ECU model, which means that we can discard the probe. The manifold gasket developed a leak, and fried the probe. Thanks for all the advice, really appreciated Quote Link to comment Share on other sites More sharing options...
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