The glow plug light comes on whilst driving, engine revs die, i turn off engine, and re-start it, it's then fine for a day or so, then it happens again
Hi
The glow plug coming on on the Diesel Mondeo is an engine management fault indicator. The car goes into "limp mode" when this happens or in other words safety mode is triggered. This explains your loss of power.
To find the cause of this light coming on - the car will have to go on an OBD scanner at a service shop which will read the codes stored in the cars computer and give you an answer as to what is causing the fault to show.
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