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Code P0505, idle is ok after replacing idle controll valve but check engine light came back on, 98 Jeep Cherokee 4.0

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  • Richard Scordino May 28, 2010

    same code?

  • masterrunner Jun 01, 2010

    Got a 1998 Jeep Cherokee, 4.0 had the code P0505, jeep had trouble idling, replaced the idle control valve and clead the code, now the idle is fine but the check engine light came back on with the same code, idle is still ok, need idears.

  • Richard Scordino Jun 01, 2010

    If you have a wiring problem with the IAC, here are the connections to test.:
    You should have continuity from pin # 10 (black harness plug on computer) to IAC white wire.
    pin #19 (same plug) to one end of Iac plug, Pin #20 to other end of Iac plug. Pin #11 to purple/white wire @ IAC..
    make sure you check all fuses as well...the computer cannot differentiate between a blown fuse and wiring fault.

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keithheavili
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SOURCE: 98 JEEP CHEROKEE CODE P0505

That error code is idle control system malfunction.  You need to replace your idle air controller (IAC). IAC basically opens and closes the throttle at idle so it stays at constants RPM.  Hope this helps.  Thanks for an honest rating and for using FixYa.

Posted on May 19, 2009

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  • 21 Answers

SOURCE: Had a rough idle and the engine dies while

does yurs have the idle air control motor if so look into that

Posted on Jul 12, 2009

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SOURCE: 2004 Jeep Grand Cherokee. Keeps stalling, engine

P0505 means the whole Idle Control system, not only the IAM. Check all related sensors (i.e. crankshaft sensor). Check with a voltmeter direct at the connector of the IAM if you get any signal. Remove the IAM from the TB, connect him, let someone switch your ignition key to ON. The IAM need to drive in/out for a short time to find the right position. Hold the IAM near a hard part, that they cant drive out completely! If IAM works fine, check the fuel pressure, check and clean your TB ( if not done yet). If that doesn't work, come back again please

Posted on Oct 27, 2009

  • 14036 Answers

SOURCE: Will a faulty MAP Sensor on a 1998 Jeep Grand

YOU HAVE INTAKE VACUUM LEAK AT THROTTLE BODY OR PCM HAS FAILED.NOT CONTROLLING IDLE SPEED CONTROL CIRCUIT.

Posted on Oct 06, 2010

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1 Answer

My 1999 Chrysler town & country limited my engine light came on. I whent to get a test done, it said DTC Reported P0505= idle control system malfunction P0351= Ignition Coil A Primery/secondary Circuit...


-Possible causes are Faulty Idle Control System motor
- Idle Control System motor harness is open or shorted
- Idle Control System motor circuit poor electrical connection
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Read more: http://engine-codes.com/p0505_chrysler.html#ixzz3Mq1J8Bho

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Read more: http://engine-codes.com/p0505.html#ixzz1zVJIt34L

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2004 Jeep Grand Cherokee. Keeps stalling, engine


P0505 means the whole Idle Control system, not only the IAM. Check all related sensors (i.e. crankshaft sensor). Check with a voltmeter direct at the connector of the IAM if you get any signal. Remove the IAM from the TB, connect him, let someone switch your ignition key to ON. The IAM need to drive in/out for a short time to find the right position. Hold the IAM near a hard part, that they cant drive out completely! If IAM works fine, check the fuel pressure, check and clean your TB ( if not done yet). If that doesn't work, come back again please

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2003 jeep grand Cherokee with the 4.0 has a code


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(2 trip detection logic)
IAC valve is stuck or closed
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Open or short in A/C signal circuit
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MARKO

Aug 11, 2009 | 2003 Jeep Grand Cherokee

1 Answer

98 JEEP CHEROKEE CODE P0505


That error code is idle control system malfunction.  You need to replace your idle air controller (IAC). IAC basically opens and closes the throttle at idle so it stays at constants RPM.  Hope this helps.  Thanks for an honest rating and for using FixYa.

May 19, 2009 | 1998 Jeep Cherokee

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1999 jeep cherokee classic check engine light codes


po743 is torque converter curcuit electrical. i would check and see if the torque converter clutch switch is ok!!

Mar 31, 2009 | 1999 Jeep Cherokee

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My car died a couple of days ago when I was driving. The codes P0505 and P0123 appeared. I replaced the sensors and the car still won't start and P0505 was still showing up


the idle air control valve is on the throttle body below the throttle positioning sensor. To test first, use a test light on the connection coming to it with the vehicle running. Rev the motor and each terminal should make the light flash. In this case it is most likely the sensor. If they do not flash it is in the wiring or pcm

Oct 04, 2008 | 2000 Jeep Grand Cherokee

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