Ford Mondeo hissing noise on acceleration

Car: Ford Mondeo
Variant: modeo
Model Year: 1997
Categories: Running Rough, Starting & Power Loss
LOUD HISSING NOISE WHEN ACCELERATING
SOME LOSS OF POWER
FUMES
ANY IDEAS?
Posted: Apr 17, 2009 (15 years ago)
petrol or diesel? need more info... cheers
Posted Apr 17, 2009 (15 years ago)
Petrol
The hissing is new.

Not sure if it is related, but a month ago (after I had the clutch replaced, there has been a rattle on acceleration. The garage told me tht the catalytic convertor was faulty.

Is the hissing related to that?

Should I stop spending on it and just send it to the scrap yard, it seems to be one thing after the other.
Posted Apr 18, 2009 (15 years ago)
the exhaust may be blocked sometimes the cat can cause this check the amount of ags coming out of the exhaust when you rev it up
Posted Apr 18, 2009 (15 years ago)

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