Hi All,
I have just acquired a 1998 406 GLX, with the XU10J4R 2.0 16v engine, on the 5
speed gearbox.
It has an annoying intermittent fault in the injection system.
Basically, what is happening, is the idle is suddenly becoming very erratic,
and in some cases is rapidly up and down, to the point where the rev counter
needle is dancing all over, and banging against the bottom stop, and the
engine almost cuts out. On driving, it appears to hesitate on pulling away,
the suddenly will want to play, and sit you back in your seat. On letting off
the gas, the whole car will lurch forward, as if the engine has been turned
off, but then it will recover after a few seconds. Driving slowly in first
gear at a constant throttle level will produce violent kangarooing of the
car.
The whole time that this is going on, the Warning light on the dash is
indifferent to whether it will light or not. Sometimes it will light and the
car is behaving itself, and other times it will be playing up, and the light
will stay out.
It obviously points to a sensor somewhere in the injection system, but it
doesn't want to store fault codes... I've had it hooked up to a snap on unit
a few times now, and nothing is showing... but it has always been behaving
itself at the time I have been plugging it in.
Are there any sensors that are known to be troublesome on this particular
engine? just so I have a head start in trying to find the problem... someone
suggested that it could be the intake air temperature sensor in the back of
the manifold (black plastic, held in place by one 10mm bolt), and I have
taken it out and cleaned it, and blown it out, to no avail.....
Any ideas? I'm loathe to take it to a main dealer, and pay through the
nose....
Cheers,
James
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Received on Sun Feb 19 12:28:21 2006
