Question about 1990 Toyota Pickup

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The idle on my '90 4runner 3.0 fluctuates and idles at 1500 rpm any ideas?

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You should remove inspect and clean the idle control valve on the throttle body. This can become clogged over time, or the motor itself can become worn and may need replacing.

Posted on Nov 06, 2012

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Posted on Jan 02, 2017

  • 496 Answers

SOURCE: 1990 toyota 22re high idle and surge between shifting

You have extra air leaking into the intake manifold that mimicks a throttle that is open further than it really is. Check for vacuum leaks.

Posted on Feb 28, 2009

  • 314 Answers

SOURCE: Loping and high idle

You are really onto it! Either the TPS or the cable from the peddle. Do check the cable first. Frankster016

Posted on Oct 26, 2008

  • 36 Answers

SOURCE: 1993 toyota 4x4 idle problem

sounds like your throttle positioning sensor is not set right so i would undo the two phillips heads that hold it and turn it till the idle doesnt fluctuate should be turned most of the way to the front of the truck. Also check your idle screw that throttle body could be set different.

Posted on Sep 23, 2009

  • 2 Answers

SOURCE: at idle , the rpm fluctuates and speed go down and

Could be a dirty throttle body or low coolant, bad coolant sensor, throttle sensor, or idle speed motor

Posted on Jan 15, 2010

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sisadsl
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SOURCE: My car shakes at idle speed of 800 rpm, doesn't

old engine mounts can cause that problem, even if they look ok sometimes

Posted on Apr 20, 2010

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sounds like your throttle positioning sensor is not set right so i would undo the two phillips heads that hold it and turn it till the idle doesnt fluctuate should be turned most of the way to the front of the truck. Also check your idle screw that throttle body could be set different.

Jun 24, 2009 | 1993 Toyota Pickup

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