Idle Air Control Valve
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CARQUEST by BWD Idle Air Control Valve

Part No. 21738 Warranty Details  

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CARQUEST by BWD is an aftermarket leader, providing a premium line of engine management products. BWD manufactures and distributes high technology critical components for late model domestic and import vehicles. BWD is constantly evolving to give customers the competitive edge they need to compete in today’s ever-changing marketplace.

Product Features:
  • The idle air control valve contains a high heat resistant sealant to prevent particulate contamination and allow pressure equalization.
  • Every idle air control valve are manufactured with epichlorohydrin material to withstand resistance of vehicle temperatures ranging from -40 deg. F to 257 deg. F. to prevent any loss of functionality.
  • Our idle air control valve uses a polymer blended, isotropic neodymium/iron/boron magnet to provide accurate control of the pintle and airflow ensuring accurate operation.
  • Each connector and terminals are constructed with OE quality materials to ensure an exact fit connection, resuming peak conductivity to the engine wiring harness, and resulting in a precise engine performance.
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Connector Gender:Female
Terminal Gender:Male

REVIEW SNAPSHOT®

by PowerReviews
CARQUEST by BWDIdle Air Control Valve
 
3.8

(based on 16 reviews)

Ratings Distribution

  • 5 Stars

     

    (8)

  • 4 Stars

     

    (2)

  • 3 Stars

     

    (3)

  • 2 Stars

     

    (0)

  • 1 Stars

     

    (3)

81%

of respondents would recommend this to a friend.

Pros

  • Easy to install (12)
  • Improves engine efficiency (10)
  • Durable (3)
  • Increases power (3)

Cons

No Cons

Best Uses

  • Everyday driving (10)
  • Replacement (7)
  • Restoration (3)
    • Reviewer Profile:
    • Auto enthusiast (7), Casual driver (3)

Most Liked Positive Review

 

Returned high idle back to normal.

My 94 Sierra was idling about 1700 RPM. I was told it was a vacuum leak. After looking around and replacing a couple of hoses I chose to replace the IAC. At first...Read complete review

My 94 Sierra was idling about 1700 RPM. I was told it was a vacuum leak. After looking around and replacing a couple of hoses I chose to replace the IAC. At first it idled higher but after driving for a little bit it is back down to where it should be. I should have bought this part sooner.

VS

Most Liked Negative Review

 

BWD part works great

My 1993 Suburban was having stalling problems and I was able to trouble shoot the IAC valve as the cause. I also changed several other needed sensors with BWD aftermarket parts and the truck...Read complete review

My 1993 Suburban was having stalling problems and I was able to trouble shoot the IAC valve as the cause. I also changed several other needed sensors with BWD aftermarket parts and the truck runs great. I will have to see how well these parts hold up but they all appear to be well made.

Reviewed by 16 customers

Displaying reviews 1-10

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3.0

Ok

By 

from Slatington

Verified Buyer

Comments about CARQUEST by BWD Idle Air Control Valve:

Ok

Comment on this reviewHelp Icon(earn points)

 
5.0

fit like oem

By 

from milton,vt

About Me Auto Enthusiast, Casual Driver, Mechanic, Truck Enthusiast

Verified Buyer

Pros

  • Durable
  • Easy To Install
  • Improves Engine Efficiency

Cons

    Best Uses

    • Everyday Driving
    • Replacement
    • Restoration

    Comments about CARQUEST by BWD Idle Air Control Valve:

    fit like oem

    Comment on this reviewHelp Icon(earn points)

     
    5.0

    Good product

    By 

    from Florida

    About Me Auto Enthusiast, Casual Driver

    Ask me a question

    Verified Buyer
    Level 3

    Pros

    • Durable
    • Easy To Install
    • Improves Engine Efficiency
    • Lightweight

    Cons

      Best Uses

      • Everyday Driving
      • Replacement

      Comments about CARQUEST by BWD Idle Air Control Valve:

      Fixed my high idle problem .

      Comment on this reviewHelp Icon(earn points)

       
      1.0

      Piece of JUNK

      By 

      from Atlanta, GA

      Pros

        Cons

        • Soft Metal

        Best Uses

          Comments about CARQUEST by BWD Idle Air Control Valve:

          I was tightening this piece up, not too much, and the little bit of pressure i used was enough to snap it. i had to use a nipple extractor to get it out.

          Comment on this reviewHelp Icon(earn points)

           
          5.0

          Idle control valve

          By 

          from Iowa

          About Me Auto Enthusiast

          Ask me a question

          Verified Buyer
          Level 3

          Pros

          • Easy To Install
          • Fixed Fast Idle
          • Improves Engine Efficiency

          Cons

            Best Uses

            • Everyday Driving
            • Replacement

            Comments about CARQUEST by BWD Idle Air Control Valve:

            This fixed an extremely fast idle prevalent even after complete warmup. Much better on transmission now.

            Comment on this reviewHelp Icon(earn points)

            (0 of 2 customers found this review helpful)

             
            3.0

            working ok so far

            By 

            from Florida

            About Me Mechanic

            Verified Buyer
            Level 3

            Pros

            • Easy To Install

            Cons

              Best Uses

              • Everyday Driving

              Comments about CARQUEST by BWD Idle Air Control Valve:

              seams to be working fine

              Comment on this reviewHelp Icon(earn points)

               
              1.0

              not happy

              By 

              from Florida

              About Me Auto Enthusiast

              Pros

                Cons

                • Created Huge Vacum Leak
                • Defective Out Of Box
                • Leaked From Factory Seal

                Best Uses

                  Comments about CARQUEST by BWD Idle Air Control Valve:

                  part was defective, installed in my 1989 camero idle started pulsating I never could get it to idle right. everyone told me to check for vacuum leaks replaced most of my hoses but come to find out it was this brand new part that was leaking from the factory seal

                  Comment on this reviewHelp Icon(earn points)

                  (0 of 1 customers found this review helpful)

                   
                  3.0

                  BWD part works great

                  By 

                  from Bossier, LA

                  About Me Casual Driver

                  Pros

                  • Easy To Install
                  • Improves Engine Efficiency
                  • Increases Power

                  Cons

                    Best Uses

                    • Everyday Driving

                    Comments about CARQUEST by BWD Idle Air Control Valve:

                    My 1993 Suburban was having stalling problems and I was able to trouble shoot the IAC valve as the cause. I also changed several other needed sensors with BWD aftermarket parts and the truck runs great. I will have to see how well these parts hold up but they all appear to be well made.

                    Comment on this reviewHelp Icon(earn points)

                     
                    5.0

                    replacement part

                    By 

                    from n.c

                    About Me Auto Enthusiast

                    Verified Buyer
                    3 or more reviews submitted

                    Pros

                    • Durable
                    • Easy To Install
                    • Improves Engine Efficiency

                    Cons

                    • none

                    Best Uses

                    • Everyday Driving
                    • Replacement

                    Comments about CARQUEST by BWD Idle Air Control Valve:

                    A good replacement Idle air valve easy to install

                    Comment on this reviewHelp Icon(earn points)

                    (2 of 5 customers found this review helpful)

                     
                    5.0

                    Returned high idle back to normal.

                    By 

                    from Florence, SC

                    About Me Truck Enthusiast

                    Verified Buyer
                    3 or more reviews submitted

                    Pros

                    • Easy To Install
                    • Improves Engine Efficiency

                    Cons

                      Best Uses

                        Comments about CARQUEST by BWD Idle Air Control Valve:

                        My 94 Sierra was idling about 1700 RPM. I was told it was a vacuum leak. After looking around and replacing a couple of hoses I chose to replace the IAC. At first it idled higher but after driving for a little bit it is back down to where it should be. I should have bought this part sooner.

                        Comment on this reviewHelp Icon(earn points)

                        Displaying reviews 1-10

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                        Do you have questions about this product?(earn points for answers!)

                         

                        Ask a question, get answers from real customers and in-house experts. For further assistance, please review your support options on our Contact Us page.

                        23 Questions | 28 Answers
                        Displaying questions 1-10Previous | Next »
                        • Q:

                          I have a 1993 GMC Yukon 5.7 runs rough when cold or first start up runs fine after it has warmed up. Is this the part I need?
                          Asked on 7/4/2016 by earl from Oxford,GA

                          1 answer

                          • CUSTOMER CARE

                            A:

                            It may be a reason, Earl. A failing idle control valve cause stalling while idling. It can often cause the car to stall. If it's not working properly, then that proper engine speed isn't being maintained while you idle. However, without the presence of your vehicle we would not be able to properly diagnose it, nor provide you with a 100% answer. I'd suggest that you take your vehicle to a certified mechanic for further diagnosis.

                            Answered on 7/5/2016 by Solomon from AAP
                        • Q:

                          Who is BWD
                          Asked on 9/8/2015 by Shadetree

                          1 answer

                          • CUSTOMER CARE

                            A:

                            Hi Shadetree! The BWD Automotive designs, engineers, manufactures, and distributes more than 40,000 engine management products in some of the most advanced-technology categories. BWD denotes Borg Warner Division. It is the subsidiary of Standard Motor Products. Please click the below link to see their official website:
                            http://www.bwdbrand.com/en/

                            Answered on 9/8/2015 by Solomon
                        • Q:

                          I have a 93 k1500. I have replaced almost everything ( map, o2, exc.) My truck idles low, somethime it runs ok. Then it will bog down, stall, or want start...i am having to unplug all vacums from throttle body...runs for a few miles good then starts doing the same and have to replug them...its like something us up with the vacum at times...i even put a new computer in! Could this part have something to do with it?
                          Asked on 8/14/2014 by marty from kingsport,tn

                          1 answer

                          • CUSTOMER CARE

                            A:

                            It is possible the the idle air control [IAC] valve might be a cause, but I could not tell you for certain. It would be best to take your vehicle to a repair facility and have them properly diagnose it before throwing parts at it.

                            Answered on 8/15/2014 by K from AAP
                        • Q:

                          my 94 GMC Sonoma idles rough. Like a tank. But when driving it seems fine until I stop and idle at a stoplight or stop sign. Could this be the cause?
                          Asked on 11/24/2013 by kat from Flowery Branch, GA

                          1 answer

                          • CUSTOMER CARE

                            A:

                            Hi Kat, without the presence of your vehicle we would not be able to properly diagnose it nor provide you with a 100% answer. We would suggest that you take your vehicle to a certified mechanic for further diagnosis.

                            Answered on 11/24/2013 by Steve from AAP
                        • Q:

                          my 87 jimmy 2.8l wont start and when it does it seems to run very rich to the point it die out
                          Asked on 4/4/2013 by newbie

                          1 answer

                          • CUSTOMER CARE

                            A:

                            With reference to your inquiry on the BWD Idle Air Control Valve - part# 21738, the idle air control valve may be the possible cause of the problem on your GMC Jimmy. However, I would suggest taking your vehicle to a certified mechanic for a proper diagnosis before buying and having parts installed that may not (solve/be) the problem. You may call us at: 1-877-238-2623 or visit the nearest Advance Auto Parts store one of our Parts Pros will gladly assist you with any questions or concerns you may have.

                            Answered on 4/4/2013 by Vincent from AAP
                        • Q:

                          location
                          Asked on 6/15/2012 by Anonymous

                          1 answer

                          • CUSTOMER CARE

                            A:

                            If you could please provide the year, make, model and engine size of the vehicle and we would be better able to assist you.

                            Answered on 6/18/2012 by Steve from AAP
                        • Q:

                          does this valve affect the fuel injectors.?\
                          Asked on 4/14/2012 by Anonymous

                          1 answer

                          • CUSTOMER CARE

                            A:

                            The idle air control motor or valve is a device in charge of maintaining an acceptable engine idlespeed by letting a controlled amount air passed the throttle plates. This acceptable idle speed is determined by what the ECM considers to be the “DESIRED IDLE”, which is an actual PID on the scan tool. The ECM is constantly comparing the actual idle engine RPM to its internal pre-programmed desired idle speed. The inability of the ECM not to be able to match these two values creates a problem for proper idle operation. Not all scanners provide the desired idle PID, and there are variants of idle air control valves. In essence, they all accomplish the same thing. The IAC motors/valve is directly controlled by the ECM, regardless of the type.

                            Answered on 4/16/2012 by Vincent from AAP
                        • Q:

                          where is this part located on a 87 gmc 1500 with a 305 v8 engine
                          Asked on 4/1/2012 by Anonymous

                          1 answer

                          • CUSTOMER CARE

                            A:

                            The Idle air control valve should be located on the passenger side of throttle body.

                            Answered on 4/2/2012 by Steve from AAP
                        • Q:

                          i have a 91 s10 its backfiring thro throttle body, using alot of fuel, and has no power. it has a new timming chain and its in time. what would make it do that?
                          Asked on 7/8/2011 by steven from hollow rock, tn

                          1 answer

                          • CUSTOMER CARE

                            A:

                            It seems your EGR valve is sticking or the passages are plugged. So check the EGR system to resolve.

                            Answered on 7/10/2011 by Vincent from AAP
                        • Q:

                          I have a 1989 Chevy s10,4.3L. It will start run a few seconds and die,if you keep giving it gas it will run for a short time,but not even long enough to get out of the driveway. Could this be the problem?
                          Asked on 6/9/2011 by grammy from Cave City,Ky.

                          1 answer

                          • CUSTOMER CARE

                            A:

                            This could possibly be the problem. However, with out the presence of your vehicle we would not be able to properly diagnose it nor provide you with a 100% answer.

                            Answered on 6/9/2011 by DIY Daniel from AAP
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