2003 Zetec Fiesta. For the last few days, I've been thinking that the
exhaust has been blowing a bit. Only doing it at low revs, which seemed
odd, but not impossible. But I've just noticed that it only does it
when the steering wheel is turned left or right. Tickover drops a
couple of hundred RPM, too, but recovers. So now I'm not sure where the
noise is coming from at all. Is some switch in the steering mechanism
playing up sufficiently to make the RPM drop so that it labours so much
that the exhaust blows? Or is something so badly nackered in the
steering that it sounds something like a blowing exhaust?
I've an idea that a slipping auxiliary belt could explain all this. It
seems to be okay when it's warmed up, and it is the time of year for
that sort of thing, I guess. If it continues to do it when the
weather's a bit warmer, I'll try to test the switch in the PAS fluid pipe.
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