MG-Cars.info

Welcome to our Site for MG, Triumph and Austin-Healey Car Information.

Recommendations

Parts

MG parts spares and accessories are available for MG T Series (TA, MG TB, MG TC, MG TD, MG TF), Magnette, MGA, Twin cam, MGB, MGBGT, MGC, MGC GT, MG Midget, Sprite and other MG models from British car spares company LBCarCo.

MG MGF Technical - Temperature sensor/gauge

Bought my MGF back in late Aug this year, and been ok till last week. When the water temp gauge started to flicker from normal to zero and back to normal again. Now has stopped working all together..So changed the sensor and checked the fuses. All ok but still not working ! Have run it until gets hot at speed, but still no rise and the fans dont seem to be cutting in either.. Any ideas or has anyone come across this problem too ?
A Bishop

Which or the two sensors did you change? The brown one on the side does the ECU and thus the radiator fan, the blue or black one on the underside does the guage.
deyual

Hi Deyual
I changed the brown one, didnt know there was another. Whereabouts is this situated ? is there a web page that might show me ? Thanks
A Bishop

It's at the same joint, but directing downwards.
Black coloured at the old MGF, the later are blue colour.

Before you change it check the connections.
http://www.mgfcar.de/sensor/
Dieter

Hi guys after going from garage to garage to get part, temp gauge sensor, finally got it. But screwed it in place and tightened it and damn it broke off in the housing. Now need to know if the housing that the 2 sensors attach too disconects from the cylinder head ? cant quiet see from the pics on the site ! Anyone help on this problem.. I will get this right in the end !
A Bishop

Yep, disconnects, two bolts to be accessed.
See here #12, and get a new gasket #13
http://www.mgfcar.de/epc/2630.htm
Dieter

Thanks Dieter finally found the bolts with a mirror. now changed it put all back together and started it. Let it run for about 15mins, temp gauge now works ! but now have yet another problem.
After letting it run to normal temp the car started to cough and splutter and then just cut out. Tried re starting it and it wont have it. Thought maybe not enough fuel in car, but quarter of tank ! so now im really baffled as to why this has now occured, as the car was running fine until the sensor change !!!
A Bishop

No idea, but ... the connector for the oxygen sensor is quite near to the section were you worked at....

Don't you thing it might be a good idea to have a visit at a proper garage for a reliable analysis and repair ?
Dieter

Thanks all for your help. Problem now sorted with help from RAC today. It was the coolant temperater sensor that i fitted was falty. just goes to show that even a new piece can be faulty too hey !
A Bishop

This thread was discussed between 23/11/2011 and 04/12/2011

MG MGF Technical index

This thread is from the archives. Join the live MG MGF Technical BBS now