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Idle Control Problems. Please Help!

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  #1  
Old 12-18-2010, 10:58 PM
shanem107 shanem107 is offline
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Posts: 11
Default Idle Control Problems. Please Help!

I recently just bought a used 2002 Dodge Stratus R/T 3.0 v6 24 valve. The car is beautiful and runs fine most of the time. It doesn't want to start after setting for several hours. It will start and then stall out. If I give it a little bit of gas, it will be fine. The check engine light came on and first it ran P0506 Idle Control System RPM Lower Than Expected and then a few days later it ran P0507 Idle Control System RPM Higher Than Expected.

The dealer said it might of had something to do with the battery, and after recharging it, he reset the SEL and it came back on approx 50 miles later with the same code. With older cars you can just adjust the throttle cable, but I guess with this newer dodge it is all done by the computer. I really would like to get this fixed, but I don't know how. I really hate having to give my car any gas on a cold start.
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  #2  
Old 12-20-2010, 12:03 AM
master tech's Avatar
master tech master tech is offline
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Vehicle: Mits P/U , Dodge avenger(1996) .
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Leonard Pierce
Default

Welcome to DF
Here are some problems that could cause the P0506 code.
ENGINE <3.0L> 14B-129
DTC P0506: Idle Control System RPM Lower Than Expected
.
DESCRIPTIONS OF MONITOR METHODS
 If the actual engine speed is lower by a
prescribed value than the target idle speed, a
malfunction is determined to have occurred.
.
MONITOR EXECUTION
 Continuous
.
MONITOR EXECUTION CONDITIONS (Other
monitor and Sensor)
Other Monitor (There is no temporary DTC stored
in memory for the item monitored below)
 Misfire monitor
 EGR system monitor
 Fuel system monitor
Sensor (The sensor below is determined to be
normal)
 Volume air flow sensor
 Barometric pressure sensor
 Intake air temperature sensor
 Engine coolant temperature sensor
 Throttle position sensor
.
LOGIC FLOW CHARTS (Monitor Sequence)
.ENGINE <3.0L> 14B-129
DTC P0506: Idle Control System RPM Lower Than Expected
.
DESCRIPTIONS OF MONITOR METHODS
 If the actual engine speed is lower by a
prescribed value than the target idle speed, a
malfunction is determined to have occurred.
.
MONITOR EXECUTION
 Continuous
.
MONITOR EXECUTION CONDITIONS (Other
monitor and Sensor)
Other Monitor (There is no temporary DTC stored
in memory for the item monitored below)
 Misfire monitor
 EGR system monitor
 Fuel system monitor
Sensor (The sensor below is determined to be
normal)
 Volume air flow sensor
 Barometric pressure sensor
 Intake air temperature sensor
 Engine coolant temperature sensor
 Throttle position sensor
.
LOGIC FLOW CHARTS (Monitor Sequence)
.
END
No
No
No
Yes
Yes
Yes
Malfunction Good
Monitoring
Conditions
Calculate Ne
Ne < -100rpm or
> 200rpm
Have 10secs passed?
Ne =(actual-Ne) - (target-Ne)
Ne: engine speed
START
AK200898
14B-130 ENGINE <3.0L>
DTC SET CONDITIONS (Entry Conditions and
Malfunction Thresholds)
Check Conditions
 Under the closed loop idle speed control.
 The engine coolant temperature is more than
77C (171F).
 Battery positive voltage is higher than 10 volts.
 Power steering pressure switch: "OFF".
 Volumetric efficiency is lower than 40 percent.
 Barometric pressure is higher than 76 kPa (11
psi).
 Intake air temperature is higher than 10C
(14F).
 60 seconds have elapsed from the start of the
previous monitoring.
 Target idle air control motor position is more than
100 steps.
Judgment Criteria
 The actual idle speed is more than 100 r/min
lower than the target idle speed for 12 seconds.
.
OBD-II DRIVE CYCLE PATTERN
Refer to GROUP 13C, OBD-II Drive Cycle Pattern.
END
No
No
No
Yes
Yes
Yes
Malfunction Good
Monitoring
Conditions
Calculate N






ENGINE <3.0L> 14B-129
DTC P0506: Idle Control System RPM Lower Than Expected
.
DESCRIPTIONS OF MONITOR METHODS
 If the actual engine speed is lower by a
prescribed value than the target idle speed, a
malfunction is determined to have occurred.
.
MONITOR EXECUTION
 Continuous
.
MONITOR EXECUTION CONDITIONS (Other
monitor and Sensor)
Other Monitor (There is no temporary DTC stored
in memory for the item monitored below)
 Misfire monitor
 EGR system monitor
 Fuel system monitor
Sensor (The sensor below is determined to be
normal)
 Volume air flow sensor
 Barometric pressure sensor
 Intake air temperature sensor
 Engine coolant temperature sensor
 Throttle position sensor
>14B-130 ENGINE <3.0L>
DTC SET CONDITIONS (Entry Conditions and
Malfunction Thresholds)
Check Conditions
 Under the closed loop idle speed control.
 The engine coolant temperature is more than
77C (171F).
 Battery positive voltage is higher than 10 volts.
 Power steering pressure switch: "OFF".
 Volumetric efficiency is lower than 40 percent.
 Barometric pressure is higher than 76 kPa (11
psi).
 Intake air temperature is higher than 10C
(14F).
 60 seconds have elapsed from the start of the
previous monitoring.
 Target idle air control motor position is more than
100 steps.
Judgment Criteria
 The actual idle speed is more than 100 r/min
lower than the target idle speed for 12 seconds.
.
OBD-II DRIVE CYCLE PATTERN
Refer to GROUP 13C, OBD-II Drive Cycle Pattern.





14B-130 ENGINE <3.0L>
DTC SET CONDITIONS (Entry Conditions and
Malfunction Thresholds)
Check Conditions
 Under the closed loop idle speed control.
 The engine coolant temperature is more than
77C (171F).
 Battery positive voltage is higher than 10 volts.
 Power steering pressure switch: "OFF".
 Volumetric efficiency is lower than 40 percent.
 Barometric pressure is higher than 76 kPa (11
psi).
 Intake air temperature is higher than 10C
(14F).
 60 seconds have elapsed from the start of the
previous monitoring.
 Target idle air control motor position is more than
100 steps.
Judgment Criteria
 The actual idle speed is more than 100 r/min
lower than the target idle speed for 12 seconds.
.
OBD-II DRIVE CYCLE PATTERN
Refer to GROUP 13C, OBD-II Drive Cycle Pattern.
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  #3  
Old 01-10-2011, 07:16 AM
micahgoodreau micahgoodreau is offline
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Join Date: May 2010
Posts: 4
Default

had the same stalling problem on my 96 caravan. relplaced the idle air controller on the throtle body. problem fixed.
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  #4  
Old 02-13-2011, 02:15 PM
italiangraywolf italiangraywolf is offline
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Join Date: Feb 2011
Posts: 1
Default

i'm having a similar problem on a 2002 dodge stratus 24 valve 3.0L. it stall when stopped and in gear after running for about 15min. i can keep it running by barely pressing on the accelerator to keep it going. before it warms up idle is over 1000 rpm as expected but after warm up idle is about 500 to 600 rpm when in gear with the brake on. any ideas on what could be causing this problem would greatly be appreciated.
thank you,
tony
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  #5  
Old 12-01-2011, 11:47 AM
jcartner13 jcartner13 is offline
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Join Date: Nov 2011
Posts: 1
Question

i also have this problem with my 2002 stratus coupe r/t but mine wasn't throwing codes but was having a hard time idling but only at random times. didn't think much of it but yesterday i had to change my spark plugs which is a pain in the neck (thank you mitsubishi motors) a fifteen minute job took all day but once i had i all put back together it still ran horribly and all of a sudden i had a idle air controller code. any idea how to fix this without spending 300 bucks on a new part?
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  #6  
Old 12-01-2011, 01:27 PM
eazystreat eazystreat is offline
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Join Date: Nov 2011
Posts: 15
Default

Take the IAC off and inspect it for carbon deposits. Also check the hole it seats against for the same. Clean it if you see something on it.
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  #7  
Old 12-02-2011, 08:01 AM
stratusOwner70 stratusOwner70 is offline
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Join Date: Dec 2011
Posts: 13
Default

i have a 2000 stratus 2.5 and im having problems with idle also? I replaced my iac and the tps. i put new plugs in it and cap and button it also but it still wants to stall when im coming to a stop. My car runs great on highway and in town as long as i dont stop. I might add that if i tap guess a lil before it goes to below 1000 rpms that it wont stall. I have noticed rough idle also which comes and go but the stalling is not going away.. I also replaced crank sensor. Im very lost here and cant afford to keep guessing what the problem is.. Can anybody help me here????
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  #8  
Old 12-14-2011, 04:58 PM
njk53 njk53 is offline
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Join Date: Dec 2011
Posts: 3
Default

Before you play with the IAC take a can of carburetor cleaner and an acid brush and clean in and around the throttle body butterfly edges and throttle body interface. Had the same issue on a 2.4 L Stratus. Cleaned it up real well and it idled very nice. What can happen is the calibrations in the throttle positions are very small and precise and when the throttle body gums up the butterfly won't go back to the intended idle position. Now with the throttle body out of position, the PCM starts to compensate for the precieved throttle movement and thats when you get bad idling characteristics. If it still idles bad after the cleaning, pull the IAC and clean.
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  #9  
Old 09-12-2013, 12:16 PM
NH R/T NH R/T is offline
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Join Date: Jan 2011
Posts: 21
Default Wet carpets

My drivers side carpet front and rear is always wet WTF is this from?
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Old 09-12-2013, 12:16 PM
 
 
 
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