LS - 1st and 2nd Gen (1990-2000) Discussion topics related to the 1990 - 2000 Lexus LS400

idle problem

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Old 11-08-11, 08:42 AM
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Qcollons
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Default idle problem

When I start my 91 ls 400 it idols right for some reson then after the engine warms it goes down... what is wrong wit the idol control ... 1 Luv
Old 11-08-11, 10:56 AM
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caddyowner
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That's normal behavior, unless the warm ldle is too low and the engine stalls or runs roughly.

Idol problem? I thought this might be a thread about bad singing.
Old 11-08-11, 04:02 PM
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deanshark
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Originally Posted by Qcollons
When I start my 91 ls 400 it idols right for some reson then after the engine warms it goes down... what is wrong wit the idol control ... 1 Luv
I don't think there's anything wrong with your idle. The engine idles higher when cold to warm it up to normal operating temp so the thermostat opens quicker. The normal idle is 1100-1250 cold and warm is 550 - 650. What does yours idle at?
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