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Is there any way to adjust the cold idle speed on ford ranger 3.0

Posted by joseph anderson on

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Jeff Armer

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  • Ford Master
  • 15,575 Answers

There is a base idle speed set at the factory . From sensor inputs the PCM - engine computer controls idle speed in all conditions . There is nothing for you to change idle speed, you shouldn't even try . Will cause PCM to turn on the check engine light ,that you won't be able to turn off . If your having idle problems your best bet have a qualified repair shop check scan data .
007 Idle Speed Problems Scan Data for Idle

Posted on Aug 06, 2017

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5 Related Answers

Anonymous

  • 127 Answers

SOURCE: 1988 ford ranger low idle speed

try idle air control valve

Posted on Sep 01, 2009

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SOURCE: 2000 ford xlt 3.0 ranger, sudden intermitent idle problems

Study up on what an Idle Air Control Valve does then make your decision. They can be expensive.
Search fault symptoms

Posted on Nov 25, 2009

moodydoodad

Dwight Moody

  • 107 Answers

SOURCE: I'm trying to set the idle for an 1988 Ford

Idle speed is preset and not adjustable!

Posted on Sep 12, 2010

nortonsleepe

nortonsleepe

  • 2 Answers

SOURCE: idle adjustment 1991 ford ranger 3.0 v-6 throttle body

the first thing i\I would try is to replace the Oxygen sensor...this happened to me on my 91 F150 pickup and that cured it..

Posted on May 31, 2012

Donald Leach

  • 1 Answer

SOURCE: 2008 ford ranger heater only

08 Ford Ranger 4.0 same problem but it is vacum not electric no vacum on hose in cold or hot position thought maybe valve but that's not the problem . There is no vacume to make valve work:(:(

Posted on Jun 03, 2012

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Hello:;
This sounds like a fuel problem at the carb. What it's doing is termened hunting a nd can generally be corrected by a simple adjustment of the carb. Engine at idle and neutral set rpms at lowest idle , around 640 rpms. then adjust the a/f ratio screws to balance carb. Screw both screws all the way in, do not force ,or needle and sear damage will occir. Now back each out to 1.5 turns That is your start point Adjust one screw in and out slowly until you you feel its best effact on ide whicjh should slightly increase. repeat with other screw, in and out slowly . listening to the engine idle. if idle has increase due to your adjustmebt, repwat process after lowering the idle speed again with the idle screw. When you get to the point the screws no longer affect the idle the engine show sound and run smoothly at idle, make sure you resert the idle to 650rpms for an automatic trans and 650-750 for manual trans. I hoped this helped- good luck.. If it still does it, the carb may nrrd the float checked and st.

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