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Fussy idle on 1999 4JX1
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CarGuru > Open discussion > Fussy idle on 1999 4JX1 27 April 2005 06:42:06
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Fussy idle on 1999 4JX1

Offtech 27 April 2005 06:42:06
 Hi all, hope someone can help me out here.
My truck has a 4JX1 engine which has had all the injectors done under
the recall etc. I’ve noticed recently that the idle isn’t as smooth as
it used to be and the revs jump around a bit in the 1000 rpm range.
Seems a very small amount of throttle makes the revs jump. From 1200
rpm or so, the engine is as smooth as silk and the power is still
100%.
I can get the engine to do the same thing by manually lifting the
throttle under the hood.
I suspect a crook throttle sensor sender or receiver, but if anyone
else can shed any light on this, I would be most grateful. All vacuum
lines appear to be connected and the electrical plugs have been pulled
apart and cleaned as well.
Has the correct oil, new filters and fresh battery.
I’ve also had the computer checked for error codes but none show up.
Thanks in advance

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CarGuru > Open discussion > Fussy idle on 1999 4JX1 27 April 2005 06:42:06
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