Question about 1990 Toyota Corolla

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My 2001 toyota four runner 3.4l cuts off at idle,why?

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  • Toyota Master
  • 954 Answers

It can be due to one or more of the following reasons:
Idle air control valve.
Throttle body clogged.
Weak cylinder compression.
Vacuum leaks.
PCV valve defective.
Fuel pump regulating valve.
Ignition system.

Posted on Dec 17, 2013

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  • Toyota Master
  • 20,706 Answers

20 reasons,
top 2 are
1:egr stuck open
2; ISC stuck closed.

lots more, to find it you must do tests.

Posted on Oct 14, 2013

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Posted on Jan 02, 2017

SOURCE: My 1990 toyota 4 Runner has a v low rpm while in

on the cable of the accelerator,there is an adjuster to its an,so you can adjust it here to rev it a little ,at 750 rpm,

Posted on Aug 24, 2009

  • 17 Answers

SOURCE: INSTALLING A 1989 TOYOTA 4 RUNNER A/C UNIT IN A

you are better off using a unit from an 1984 instead that will match up to your wiring

Posted on Sep 03, 2009

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1 Answer

Does a 1998 toyota four runner have a fuel cut-off switch


It doesn't have one-its the circuit opening relay that powers it. Also the airflow meter is responsible of grounding the COR if it doesn't the fuel pump won't be powered up. Looks like its a fuel cut switch for a carburetor-never seen it on a FI Toy truck with a fuel cutoff switch but a Carb-perhaps I'm wrong

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Free 1998 toyota four runner repair manual download


free, huh?
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2001 Toyota 4runner idle rpm is too low


Hi Seanmcm21,
More than likely the low idle you are experiencing is caused by a dirty IAC valve located right under the throttle body itself. It needs to be cleaned out with carb cleaner. Remove the electrical connector, the two vacuum hoses, and two screws. To put it back, use a little sealant to seal it before screwing it back together but do not get the sealant inside the IAC valve. If this 4 Runner is a V6, you may need to replace the spark plugs if old. Make sure to purchase twin electrode NGK or Denso spark plugs and gap them to .043 with a gapper.

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INSTALLING A 1989 TOYOTA 4 RUNNER A/C UNIT IN A 1984 TOYOTA FOUR RUNNER PROBLEMS WITH WIRING HARNES


you are better off using a unit from an 1984 instead that will match up to your wiring

Sep 01, 2009 | 1984 Toyota 4Runner

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