*...quote:
Old 03-07-2016, 09:19 AM #1
clevocortina
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Join Date: Nov 2006
Posts: 46
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Default Series 2 au.. Idle getting low and flat spot
Hey gents...
My partners Au has developed a problem where the idle speed is slowly getting Lower and lower to the point you either have to knock it into neutral at the lights or two foot it.
Also it's stumbles on the transition from idle or coast to accelerate.. Like this
Bbbbb then it's smooth... Car has good power and does a skid ect but just this flat spot when a decent amount of throttle is added...
It's like a Carby when the accelerator pump is stuffed...
I have removed the injectors and had them sonically cleaned..
I have also replaced the coil and leads... Plugs arnt that old
One of the posts on the old coil was completely gone just a pile of dust but amazingly that didn't seem to make a difference....
I was thinking about swapping
ecu for my one as my car runs perfect....
Any suggestions would be appreciated...*
..XXXXXXXXX GDAY PG2 and POSTER RE HARMONIC BAL.,XXXXXXXX
thanks for sticking with me on this one.
Above is a copy of a post I located on this thread which matches the exact fault.
There is a top reference to the date etc at the top. He solved the problem by replacing the inlet gasket and fuel pump. But did them simultaneousl, thus which particular unit was the problem is unclear.
But I've made some progress. Having noted variously that the inlet manifold bolts loosening is common, out came the ten mm spanner and bingo, they sure were. Some had nearly half a turn to tighten.
The advice re above wasto observe any changes to performance, and subsequently replace gasket.
Well it improved the fault by at least fifty percent, (not fixed), but it's highly encouraging).
It's removed the spluttering part from the fault, leaving it with a slight instability on initial take off.
It's interesting, because this fault mimics so many other unit failures which the aboveposter, like myself, was taken down the same fruitless road.
I'm booking it in this week to have gasket replaced. Fingers crossed.
I'll repost when done.
Thanks heaps for your input and this brilliant site.
Dan