2003 Ford Mondeo idle problems hunting and loss of power while driving

Car: Ford Mondeo
Year: 2003
Variant: 1.8 duratech he
Categories: Running Rough, Starting & Power Loss
car cold engine idles well for a while then crappy idle,

also car driven when cold pulls as it should, seems to be when engine warms i get shoddy idle and a dramtic loss of power.

cat has been replaced, still the same

any ideas would be great

no engine managment light on either where is it when ya need it hey lol....
Posted: Dec 10, 2009 (14 years ago)
Many possible causes , without more info , just guessing . Here is one solution ,


Ford Focus and Mondeo 1.8 2.0 TDCi 2000 - 2003

Problem: Engine hard to start, lack of power, rough idling etc.

Solution: A common problem has been identified with the above models and an insufficient signal from the camshaft postion sensor (CPS). The fault code P0340 may have been triggered which relates to the CPS. A revised wiring harness / sensor should be installed which increases the sensor signal from 5 volts to 12 volts. The increase in voltage will provide a better signal from the sensor.



Posted Dec 13, 2009 (14 years ago)
im still thinking it could be the cat as previuos owner had cat fitted but does sound as tho it is blowing slightly also, seems raspy threw the whole exhaust system, but garage didnt seem to think soo as it wasnt rattling, can the cat still effect the performance without a rattle, any way of testing it just in cas its this small matter of a cat
Posted Dec 15, 2009 (14 years ago)

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