My mondeo idles at 1000 rpm when worm and will not go any lower. Is this a pass MOT wise ? I heard that if you disconnect the battery for a while and then reconnect it, the ECU or whatever, may sort itself out. Will this harm the memory of the car ? I have the radio code ready.
Could it be the thermalstat that is at fault because it never reaches the middle, only a third of the way even after a motorway spin.
Thank you in advance.
First of all replace the thermostat if a thermometer reveals its not able to reach full temp, as otherwise it will not run closed loop and you will definately fail; on the emissions test.
If thermostat is ok, check the PSPS switch wires- they often rub on the underside of the bonnet and an open or short circuit will permanantly raise idle rpm to approx 1000rpm..
Tim..
How can someone manage to get a 4 letter word wrong?
Because we are all different?
In message , Conor writes
F*ck nose.
In message , john smile writes
As Tim says, your thermostat is probably knackered and needs changing.
I had a Mk2 Mondeo (my son owns it now) and it always idles at a shade under 1000 rpm. I checked everything out including the power steering switch, aircon switch and idle control valve and came to the conclusion that the gauge itself was over-reading.
Have something to add? Share your thoughts — no account required.
Ask the community — no account required