Ford Ranger Forum - Forums for Ford Ranger enthusiasts!

Go Back   Ford Ranger Forum - Forums for Ford Ranger enthusiasts! > >
Forgot Password? Join Us!

Welcome to Ford Ranger Forum

Reply
 
Thread Tools Search this Thread

  #1  
Old 07-14-2011, 06:22 AM
Sarahjdickson Sarahjdickson is offline
Learning to use the forums
 
Join Date: Jul 2011
Posts: 5
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?
Reply With Quote
  #2  
Old 07-14-2011, 06:34 AM
03RangerFX4 03RangerFX4 is offline
Ford Ranger Driver
 
Join Date: Jun 2011
Posts: 1,681
Send a message via Yahoo to 03RangerFX4
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.
__________________
2003 Ford Ranger 4 Door 4x4 FX4 4.0L
2015 Ford Focus
Reply With Quote
  #3  
Old 07-14-2011, 06:40 AM
Sarahjdickson Sarahjdickson is offline
Learning to use the forums
 
Join Date: Jul 2011
Posts: 5
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
Reply With Quote
  #4  
Old 07-14-2011, 06:43 AM
03RangerFX4 03RangerFX4 is offline
Ford Ranger Driver
 
Join Date: Jun 2011
Posts: 1,681
Send a message via Yahoo to 03RangerFX4
Default Re: Low idle when in park

Is it an automatic trans or stick?
__________________
2003 Ford Ranger 4 Door 4x4 FX4 4.0L
2015 Ford Focus
Reply With Quote
  #5  
Old 07-14-2011, 07:42 AM
Sarahjdickson Sarahjdickson is offline
Learning to use the forums
 
Join Date: Jul 2011
Posts: 5
Default Re: Low idle when in park

It's a 2003 automatic v6 4.0l
Reply With Quote
  #6  
Old 07-14-2011, 07:53 AM
03RangerFX4 03RangerFX4 is offline
Ford Ranger Driver
 
Join Date: Jun 2011
Posts: 1,681
Send a message via Yahoo to 03RangerFX4
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.
__________________
2003 Ford Ranger 4 Door 4x4 FX4 4.0L
2015 Ford Focus
Reply With Quote
  #7  
Old 07-14-2011, 08:17 AM
pooleo pooleo is offline
Ban Survivor. (x2)
 
Join Date: Jun 2010
Posts: 6,764
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
__________________
1999 | Ext. Cab | 4.0 | 4x4 | 4.10's
Quote:
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
Reply With Quote
  #8  
Old 07-17-2011, 10:06 AM
cowboykilroy cowboykilroy is offline
Like the Forums
 
Join Date: Dec 2010
Posts: 41
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.
Reply With Quote
  #9  
Old 07-17-2011, 10:08 AM
pooleo pooleo is offline
Ban Survivor. (x2)
 
Join Date: Jun 2010
Posts: 6,764
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.
__________________
1999 | Ext. Cab | 4.0 | 4x4 | 4.10's
Quote:
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
Reply With Quote
  #10  
Old 07-17-2011, 10:10 AM
cowboykilroy cowboykilroy is offline
Like the Forums
 
Join Date: Dec 2010
Posts: 41
Default Re: Low idle when in park

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

Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
Fluctuating Low and Very High Idle Argess 4-Cylinder Tech 21 11-29-2011 08:25 AM
Low rpm in park navseawelder1 General Ford Ranger Discussion 4 05-13-2011 07:56 PM
Idle fluctuates low gshockxc 4-Cylinder Tech 32 01-17-2011 04:42 AM
low idle and low charging gauge big green 4.0 SOHC / 4.0 OHV Tech 6 11-29-2010 05:29 AM
High idle in park!!!! POS1984ranger 2.9 Liter Tech 16 12-25-2009 07:48 PM