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Co adjust error

Engine is not running smoothly at idle speed

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  • Daewoo Master
  • 3,103 Answers

Cjheck emissions controls for vacuum leaks..ignition circuits for malfunctions..

Posted on Dec 26, 2013

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6ya6ya
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Posted on Jan 02, 2017

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Mmurad
  • 46 Answers

SOURCE: base idle speed adjustment....1KZ-TE 3.0 litre turbo.

Hi djay ,you need to check the vacuum pipes beneath the injector pump it they are intact and test them with a vacuum gauge. The work of this vacuum is such that when you put it drive the vacuum increases the idle speed slightly.

Posted on Dec 09, 2008

  • 12 Answers

SOURCE: rough idle / engine surges until power is applied

Sounds like a possible vaccume hose leak?

Posted on Feb 07, 2009

  • 5 Answers

SOURCE: i have a 1994 gmc safari.It seems to have a smooth idle at times

Im not sure if you got it fixed yet! It could possibly be idle air control valve. But here some more suggestions! I had a 94 Safari van 4.3 liter I was working on for about three days and I finally figured out what was wrong with it. It would run fine for a couple minutes and as soon as I hit the gas and let off it would surge, but anyways I ended up changing the distributer, after the fuel pump and filter, mass air flow sensor, egr valve, idle air control valve, map sensor, and ignition module. So that might sove the problem if you were on the same track with it as I was. Hope this helps ya!

Posted on Mar 09, 2009

  • 1 Answer

SOURCE: '04 Mazda3 had very low engine speed during idling

I have encountered this problem also, try changing your battery. My battery lasted almost 4 year till it was the cause the shot my alternator.

Posted on Apr 10, 2009

  • 750 Answers

SOURCE: Rough idle engine ticking

check for a lose spark plug lead or cracked elecrod insulation on spark plug

Posted on Jul 09, 2009

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2 Answers

2003 Kia Sedona what is the RPM supposed to idle aton cold start an in warm weather


Idle speed depends on a number of factors; for instance it may idle faster when the air conditioner is on. Instead of a fixed idle speed, as in the old cars, the engine computer sets the speed to whatever is needed to run any accessories and maintain smooth operation, but generally not more than that. That's under normal circumstances. There are several failure modes that cause erratic idle speed; usually the engine will also run roughly.

Jul 09, 2017 | Kia Cars & Trucks

1 Answer

Why does my Nissan Levina engine not run smoothly when I drive slowly?


there are a few things that could cause this , have you had the engine serviced regulary ?get the OBD codes read as may be the EGR valve or the Idle Control , clogged injectors , clogged exhaust , i'd try a fuel addative that covers the catalytic convertor as well as the engine parts , take for a longish run say 100 kilometers at a highish speed to get the engine to a good hot operating temperature

Oct 14, 2014 | Cars & Trucks

1 Answer

Rough idle smooth accleration


Check your vacuum lines and be sure your throttle body is tightened down. Carb cleaner spray can be used to find the leak. Spray it around the lines and gaskets (while the engine is running). If the idle speeds up, you found the area of the vacuum leak and the solution to your problem, possibly.

Jun 25, 2014 | 1996 Buick Century

1 Answer

What should the idle speed be set at on a 1971 F100 3 speed manual transmission 302 engine?


No more than 800 RPMs and if running real good you might be able to get to about 600 with a good smooth idle.

Jun 29, 2011 | Ford F-100 Cars & Trucks

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Hi Gurus, My 4JX1 engine is vibrating on idle. Idle speed is about 750rpm. At hgher speed the engine runs smooth. The problem is the engine dies off in the middle of driving. Sometimes it will start again...


Are you running the recommended oil grade? As the injection system is operated by engine oil pressure using the wrong oil grade can prevent your car from starting, running smooth or hard starting! Ideally they require a 5W30 oil grade. Idle speed is controlled by the engine control unit! It's a common rail diesel engine so there's nothing to adjust! The Camshaft position sensor could also possibly be intermittently faulting causing similar symptoms! It's located on the front of the cambelt cover(gray coloured sensor)

Oct 08, 2010 | Isuzu Trooper Cars & Trucks

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Will not run smoothly when engine warm unless MAF


I would guess you pretty well havew it figured out. Change the MAF sensor.

Dec 24, 2009 | Mitsubishi Montero Sport Cars & Trucks

1 Answer

Rough idle engine ticking


check for a lose spark plug lead or cracked elecrod insulation on spark plug

Jul 09, 2009 | 1990 Isuzu Spacecab

1 Answer

Check engine light comes on temporarily - engine chuggs at idle


Before changing you pcm try cleaning your egr valve. remove the valve and see if its stuck in the open position if so use a small pick to clean around the spring.

Mar 12, 2009 | 1999 Jeep Cherokee 4WD

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