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Old 07-14-2011, 06:22 AM
Sarahjdickson Sarahjdickson is offline
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Question Low idle when in park

I noticed the other day when my truck was on but in park it was idling at 1000 and then it would click and drop to 500 and then right back to 1000 and this repeated itself every 2 seconds. Any one have an idea what could cause this?
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Old 07-14-2011, 06:34 AM
03RangerFX4 03RangerFX4 is offline
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Default Re: Low idle when in park

I dont think u can set the idle as it computer controled. In park the RPM will drop to about 500-700 RPM and that is normal.
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Old 07-14-2011, 06:40 AM
Sarahjdickson Sarahjdickson is offline
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Default Re: Low idle when in park

It seems like it is going to stall though when it drops but then it jumps back up
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Old 07-14-2011, 06:43 AM
03RangerFX4 03RangerFX4 is offline
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Default Re: Low idle when in park

Is it an automatic trans or stick?
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Old 07-14-2011, 07:42 AM
Sarahjdickson Sarahjdickson is offline
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Default Re: Low idle when in park

It's a 2003 automatic v6 4.0l
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Old 07-14-2011, 07:53 AM
03RangerFX4 03RangerFX4 is offline
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Default Re: Low idle when in park

Have you done a tune up on it? Could be bad plugs and or wires. One easy way to see if you need plug wire is to pop the hood and start the vehicle when it dark out side, make sure there is no light...if you see the wire arking they are bad...do not touch the wires.
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Old 07-14-2011, 08:17 AM
pooleo pooleo is offline
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Default Re: Low idle when in park

its your air conditioner. It is low on freon and is cycling. when it kicks on its a tremendous load on the motor so the rpms will drop
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Old 07-17-2011, 10:06 AM
cowboykilroy cowboykilroy is offline
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Default Re: Low idle when in park

A/C compressors ALWAYS cycle ,even when perfectly charged. Clean or replace your idle air control valve (iac valve) .The iac compensates for the AC and other conditions,That's why it is there.
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Old 07-17-2011, 10:08 AM
pooleo pooleo is offline
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Default Re: Low idle when in park

yes, but if it is low it will continue to cycle on/off every 2-3 seconds. When full it will come on and stay on for a while.
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A Gladiator does not fear death. He embraces it. Caresses it. Fucks it. Each time he enters the arena, he slips his c0ck in the mouth of the beast, and prays to thrust home before the jaws snap shut. - Oenomaus
Ball Joints/Upper A-Arms How To
Replace Door pin/bushing
Repair broken dome light tabs
VIDEO OHC Install
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Old 07-17-2011, 10:10 AM
cowboykilroy cowboykilroy is offline
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Default Re: Low idle when in park

Yes BUT the iac instantly adjusts for that change in load.
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