Question about 2001 Chevrolet Suburban

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Idle problem 2001 Suburban idle at 5-6 hundred rpm...What might cause that..

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6 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

  • 23 Answers

SOURCE: setting idle on 2001 blazer

there is no manual setting for idle speed it is computer controlled the only thing you can do is make sure the thottle bore is clean.good luck from schleck.

Posted on Sep 03, 2008

  • 150 Answers

SOURCE: idle at 1500 to 2000 rpm

Most likely the throttle body gasket (between the throttle body and the intake manifold) is leaking.

Posted on Feb 12, 2009

emissionwiz
  • 75817 Answers

SOURCE: 2003 suburban idles to low.

the idle speed is computer controlled and not adjustable, slow idle is caused by a dirty intake, do the following.

Here are some of the causes of surges, stalls at stops, slow idle speed, erratic idle speed, rough idle and engine hesitation (and other problems), it is in most cases the idle speed control air-bypass valve and or throttle valve and upper intake, these area's get full of gunk and combustion residue over the miles and cause idle issues (stalls, low idle) like yours, Get a can of intake cleaner from any local parts store, not carb spray, intake cleaner, it is made by a company called CRC, remove the air intake hose to the engine, hold the idle high so the engine won't stall, then spray the can of cleaner into the intake while keeping the engine running, use at least 1/2 the can, shut down the engine and disconnect the battery for 5 minutes, then restart and complete a number of mixed driving cycles, town, freeway, stop and go etc., after a few days the problem will go away as the system will relearn to the clean intake.

Posted on Apr 10, 2009

The GQ
  • 32 Answers

SOURCE: 2000 Blazer 4.3/ idle control, high idle 950 rpm,

Idle air control valve or a vacuum line has a bad leak of sorts

Posted on Oct 08, 2009

  • 400 Answers

SOURCE: 2001 2500hd duramax idle surge. doesn't do it all

Well there are quite a few things that casue a "surge" in a common rail diesel. You will need to check injector flow rates (scanner only). Fuel pressure regulator for pulsing (scanner only). Supply side fuel system for air leaks (seeing if it is sucking air into the system).
My bet would be the injectors, because you say the rpms aren't going up and down, which is usally what happens when the regulator goes bad, and when you **** air into the supply they have an extended crank. Report back with your findings.

Posted on Nov 24, 2009

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Hello;
Have you checked the fuel pressure? You may have a sticking fuel regulator, causing too much fuel at idle. Since it works fine off idle and cruise I would look there.
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Jun 10, 2009 | 1999 GMC Suburban

1 Answer

2003 suburban idles to low.


the idle speed is computer controlled and not adjustable, slow idle is caused by a dirty intake, do the following.

Here are some of the causes of surges, stalls at stops, slow idle speed, erratic idle speed, rough idle and engine hesitation (and other problems), it is in most cases the idle speed control air-bypass valve and or throttle valve and upper intake, these area's get full of gunk and combustion residue over the miles and cause idle issues (stalls, low idle) like yours, Get a can of intake cleaner from any local parts store, not carb spray, intake cleaner, it is made by a company called CRC, remove the air intake hose to the engine, hold the idle high so the engine won't stall, then spray the can of cleaner into the intake while keeping the engine running, use at least 1/2 the can, shut down the engine and disconnect the battery for 5 minutes, then restart and complete a number of mixed driving cycles, town, freeway, stop and go etc., after a few days the problem will go away as the system will relearn to the clean intake.

Mar 30, 2009 | 2003 Chevrolet Suburban 1500

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