Why is the check engine light on and idle problem?

Question 1

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1998 Ford F-150 6 cylinder. When I turn on the Air conditioning the engine idles rough.

Question edited for clarity.
Question moved to Ford F-150.

The first thing you must do is to connect a code reader and find out why the Engine Check Light is on. It is a 1998, so the information will be basic, but it is a starting point.

Mar 01, 2022 • Ford F-150 Cars & Trucks

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2005 cobalt , engine chokes and kills in stopped or idle position

Could be a dirty throttle body, faulty idle control valve, or a vac leak. Usually if the idle control valve fails the check engine light will come on.

Jan 25, 2013 • 2005 Chevrolet Cobalt

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My 1994 Camry idling problem.? It's a 1994 Camry V4, 2.2 L. After i changed the head gasket, my car idle became too slow. It seems like it doesn't have the cold engine starting idling anymore, i...

If it runs fine and the idle is the only problem you could try idling it up some with the idle set screw on the throttle body it sounds like it may be a little bit out of time those toyotas have a fine lins on the timing.

Jul 03, 2011 • 1994 Toyota Camry

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My cars Idle RPM often remains high in the range of 1500 - 2000 and ocassionally Check Engine light comes on, However Check Engine Light dissapear as soon as cars moves on engine power. Did some one has...

a better question is why is idle so high? could be a vaccum leak or other issue. Adjusting the idle circuit is not the answer. Since the check engine light did come on perhaps you can retrieve a trouble code...maybe even a bad tps

Feb 17, 2011 • 2002 Suzuki Esteem

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Engine will not stay idling

Dirty throttle plates and idle speed control motor can cause stalling without setting check engine light. If your check engine light is on you will have to get the code out and continue from there. Vacuum leaks will also cause engine to stall but usley set check engine light.

Dec 21, 2010 • 2001 Chevrolet Suburban

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Idling high and sometimes check engine light comes

try cleaning the mass air flow sensor

Jan 14, 2010 • 2001 Dodge Durango

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1answer

High idle speed when the engine is cold

The high idle speed at start up is normal. As the engine temperature increases, the engine idle should kick down automatically. Insofar as the emissions results, if there were a problem, the check engine light should be on. If it is, take the car to an autoparts store and have the fault codes read. Most parts stores will perform the scan for free. If the check engine light is not on, and the idle question was all you were worried about, you are good to go! Hope this helped and best wishes.

Jul 31, 2009 • 2002 Toyota Camry

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Idles low like it wants to die but doent

Idle sensor is bad. Find a autozone for check engine light they will connect to computer for free, and tell u what codes come up they can give u a printout also.

Jun 28, 2009 • 1999 Mercury Cougar

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1answer

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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99 Nissan pathfinder idles hard at lights

Have you changed the fuel filter recently?

Feb 02, 2009 • 1999 Nissan Pathfinder

Question 2

Anonymous

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Posted on Oct 14, 2009

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Could have a bad injector or PSM problem. When idle is bad start pulling each spark plug one at a time , if no change then thats the bad cylinder. Could be a spark plug too. Buy a spark plug wire puller to do this job (plastic only and only use one hand)

Answer 2

john h

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Posted on Oct 14, 2009

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Need to have trouble code read-pre 1996 vehicles are obd l usually need to read the flashing eng light like morse code some auto stores have the 12 pin scanner and scan for free stores such as auto zone ,and advanced auto

Answer 3

RON HOOPER

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Posted on May 08, 2010

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Need to find out what code you are getting from check engine light, possibe TPS

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Why is the check engine light on and idle problem?

3 Answers

Anonymous

john h

RON HOOPER

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Related Questions:

1998 Ford F-150 6 cylinder. When I turn on the Air conditioning the engine idles rough.

2005 cobalt , engine chokes and kills in stopped or idle position

My 1994 Camry idling problem.? It's a 1994 Camry V4, 2.2 L. After i changed the head gasket, my car idle became too slow. It seems like it doesn't have the cold engine starting idling anymore, i...

My cars Idle RPM often remains high in the range of 1500 - 2000 and ocassionally Check Engine light comes on, However Check Engine Light dissapear as soon as cars moves on engine power. Did some one has...

Engine will not stay idling

Idling high and sometimes check engine light comes

High idle speed when the engine is cold

Idles low like it wants to die but doent

Check engine light comes on temporarily - engine chuggs at idle

99 Nissan pathfinder idles hard at lights

Not finding what you are looking for?

1993 LeSabre

1998 Ford F-150 6 cylinder. When I turn on the Air conditioning the engine idles rough.

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Why is the check engine light on and idle problem?

3 Answers

Anonymous

john h

RON HOOPER

Add Your Answer

Attachments: Added items

Related Questions:

1998 Ford F-150 6 cylinder. When I turn on the Air conditioning the engine idles rough.

2005 cobalt , engine chokes and kills in stopped or idle position

My 1994 Camry idling problem.? It's a 1994 Camry V4, 2.2 L. After i changed the head gasket, my car idle became too slow. It seems like it doesn't have the cold engine starting idling anymore, i...

My cars Idle RPM often remains high in the range of 1500 - 2000 and ocassionally Check Engine light comes on, However Check Engine Light dissapear as soon as cars moves on engine power. Did some one has...

Engine will not stay idling

Idling high and sometimes check engine light comes

High idle speed when the engine is cold

Idles low like it wants to die but doent

Check engine light comes on temporarily - engine chuggs at idle

99 Nissan pathfinder idles hard at lights

Not finding what you are looking for?

1993 LeSabre

1998 Ford F-150 6 cylinder. When I turn on the Air conditioning the engine idles rough.

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