Sinky
Posted a lot
Run Baby Run......Please!
Posts: 1,395
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Aug 25, 2011 18:08:18 GMT
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Hi me again  Ford Granada Mk2 2.8i 1981 AUTO Could somebody please tell me why this happens  Full lock , auto in reverse start to reverse cuts out  Thanks |
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Last Edit: Aug 25, 2011 18:09:58 GMT by Sinky
2001 Volvo XC70 wagon
2003 Piaggio X9 Evo
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RobinJI
Posted a lot
"Driven by the irony that only being shackled to the road could ever I be free"
Posts: 2,995
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Aug 25, 2011 18:15:59 GMT
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Judging by this and you 'RPM' thread, it sounds a lot like your idle valve's playing up.
When you're on full lock, the power-steering pumps working hard trying to turn further when it can't, this will put more load on the engine through the belts, making it struggle to idle. Normally the idle valve will let a bit more air into the engine, so the idle increases to counteract the extra load on it.
So yeah, if your idle valve's sticking and a bit slow to react, or just not working properly, then the load could be stalling the engine before the valve can stop it happening.
It could be something else, as I'm not expert on these exact engines, but it would make sense. I'm not sure why reverse would be relevant through.
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Aug 25, 2011 18:29:00 GMT
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^ ever tried to push a car backwards on full lock? That's why it shows up more in reverse.
Yes, Idle valve (or aux air valve....) opens to raise the tickover when the PAS pressure rises - there is a switch in the PAS line that senses this.. Seeing as you already have wandering tickover I'd agree with Robin, deal with the idle valve first.
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To get a standard A40 this low, you'd have to dig a hole to put it in |
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