Hello all,

I have a 2002 Ford Fiesta 1.25 3 door hatchback with a faulty air temp sensor. I have a spare sensor but I can't seem to find the old sensor on this model. The Haynes manual does not show what looks to be my particular engine model in the book I have (Oct 1995 to Mar 2002). Does anyone know where it might be if I can't find it in the air box or next to the MAF sensor? Also, my engine compartment looks identical to the pictures shown here: http://www.fordownersclub.com/forums/topic/3268-air-filter-location-2001/

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A T-MAP is a combined temperature (IAT/inlet air temp) and MAP (manifold absolute pressure) so effectively it has a temp sensor combined with the MAP (codes etc may show the temperature part of the T-MAP as "inlet air temp")

Okay, I had wondered about that. The mechanic was the one who said IAT sensor upon reading a -40 degree inlet air temperature when looking at the check engine light. Thank you for your help. The next step, I'm assuming, is to replace the T-MAP then?

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Okay, I had wondered about that. The mechanic was the one who said IAT sensor upon reading a -40 degree inlet air temperature when looking at the check engine light. Thank you for your help. The next step, I'm assuming, is to replace the T-MAP then?

Not nessisarily - the problem may be the connection onto the sensor - this can becoe corroded - cleaning the contacts (with wet or dry or emery paper - not wd-40/ switch cleaner etc - even taking it off/on again and giving it a shake about may sort it ) may sort it instead of splashing out on a new T-MAP

Often, a new sensor fixes the fault because the contacts on the sensor are new and taking the connector off/on makes a circut again, and you have paid for a new (expensive) T-MAP and you throw away the old (perfectly good apart from corroded connectors) T-MAP

Thats not saying the old sensor is not faulty but its worth cleaning the connectors 1st as T-MAP sensors can be expensive

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