Question about 2003 Chevrolet Impala

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O3 impala has a high idle in park but put in gear it idle down

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  • Chevrolet Master
  • 14,585 Answers

Clean the throttle body, mass air flow sensor and idle air control motor. Replace the air filter.

Posted on Apr 22, 2015

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6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

  • 1 Answer

SOURCE: 2002 nissan altima p0507 idle problem

I had the same problem before. after using the scanner i got a code number P0507. "Idle Air Control", New 2002 and up Nissan models like my Altima don't have an idle valve or sensor like older models to be replace. Here's the solution " Replace your "Throttle Chamber" the idle sensor is build in it, there is no other way to fix this problem. the throttle chamber is about $175.00 at your Nissan Dealer. The need your core or you will need to pay extra money. No need for expensive mechanic shop, you could do this your self. the throttle chamber is so easy to remove, four screws holds it together. I will take you about ten to twenty minutes to replace it. Please trust me and you will save big bucks!!!!!

Posted on Jan 13, 2009

jryan11kc343
  • 19 Answers

SOURCE: Engine idling high in park. Will not start until

check your IDLER

Posted on Jul 11, 2009

  • 82 Answers

SOURCE: my 2003 chevy impala idle high in park n when i

things to check: check for engine vacume leak
carbon build up at throttle body. idle air contoller maybe stuck due to carbon build up or defective

Posted on Mar 21, 2010

traceylewis1
  • 363 Answers

SOURCE: I have a 1992 Ford

Most likely your (TPS) is out "Throutial Posision Scensor".

Posted on Nov 30, 2010

  • 1 Answer

SOURCE: high idle in park and nutreal

My 1999 4x4 isuzi amigo idles high in park and neutreal at 2000 RPM's, 3.2 motor v6, and i change throttle position sensor and idle air control and it will no idle down

Posted on Oct 01, 2011

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Related Questions:

1 Answer

Reverse gear crunching


Hi. Maybe a vacuum leak or a auto choke issue keeping the idle high. If the idle is too high then the reverse gear will crunch.

Mar 21, 2014 | 1989 Volkswagen Golf

1 Answer

I have 1990 ford f150 5.8 liter it idles high when in park and idles about 1200 rpm when in gear and sometimes surges up and down. i have clean the idle control and check showing 12.5 ohms still won&#


One common problem is a vac leak or a sticking throttle plate.
The computer controls idle speed by how much air is allowed into the intake. The idle control valve could be sticking even tho you have cleaned it, or have a faulty motor.

Sep 12, 2012 | 1990 Ford F150

1 Answer

I have a 1984 ford f150. The truck idles very high when in park but when you put in drive or reverse it goes down to normal. It has duel straight exhaust on it and I wonder if that could be the prob. Idk.


you didnt say if it was happening only during the initial warm up of the vehicle or all the time. if it is just during warm up this is not too unusual as long as the engine isnt racing. if it is just a "high idle", say arround 2,000 rpm's its normal. the idle would usually go down as the vehicle reaches operating temperature. when you put the vehicle in gear, you are actually loading the engine slightly, thats why the idle comes down then. when in park the engine has no load on it so it is free to rev a little higher at these times. if it a at a high idle constantly, then i would start looking for sticking throttle cable, binding throttle plates, ect and remedy the problem. this should not have anything to do with the dual exhaust.

Mar 13, 2011 | Ford F-150 Cars & Trucks

1 Answer

My 2003 chevy impala idle high in park n when i put it in drive it will go up to 40mph without being on the gas pedal


things to check: check for engine vacume leak
carbon build up at throttle body. idle air contoller maybe stuck due to carbon build up or defective

Mar 21, 2010 | 2003 Chevrolet Impala

1 Answer

Car is idling too high when in park.


have u checked the spark plugs?

Aug 11, 2009 | 2000 Chevrolet Impala

1 Answer

I have a 86 chevette 1.6 rough idle when put into gear.


It may have a vacuum leak, and /or a dirty carburator that may need to be overhauled.

Jul 26, 2009 | 1986 Chevrolet Chevette

1 Answer

Integra revs RPMs when idling


idle air control motor or just a plain old vacuum leak

Jul 21, 2009 | 1992 Acura Integra Hatchback

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