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I want to check the AIS motor circuit in my 1989

I get trouble code 25(AIS) motor circuit, and want to check the AIS motor circuit in my 1989 Plymouth Acclaim 2.5L w/o turbo. Do you have a flowchart for it?

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Pull it off, clean it & port it came out of with throttle body spray cleaner, especially at pintle, (pointed end of motor) Re-install & try it.

Posted on Jul 17, 2009


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What do these Diognastic codes mean from a 1993 plymouth voyager 3.0 V6 engine sport edition ?

The first thing I would do is erase the codes and then drive it for a few days and see if any of them come back again.
Code 24 is the throttle position sensor circuit
Code 14 is the MAP sensor circuit
Code 37 is Part Throttle Unlock Solenoid Driver Circuit if equipped
Code 25 is the idle speed control motor circuit
And 22 is the coolant temp sensor circuit.
Most of these components could cause your issue, but I doubt all of them are faulty. The codes can also appear if the components are unplugged.
You could also have a weak fuel pump which would not set any trouble codes.

Aug 03, 2014 | Plymouth Voyager Cars & Trucks

1 Answer

I have a Mitsubishi eclipse 95 and the check engine light codes are 12, 25,41, and 55. So what's wrong with my car??? I can't find what these codes mean

Hi there:

Code 12 - Battery or power line recently disconnected - This code is normal if the electrical system has been worked on or the battery has recently been disconnected. It will be removed after 15 ignition switch on/off cycles.

Code 25 - AIS (Automatic Idle Speed) motor circuit shorted or target idle speed not reached

Possible Causes:
- Vaccum leak - Check all vaccum lines for cracks or breaks.
- Bad connection or wiring - Check the wiring and connections between the logic module and the motor. Clean and regrease any corroded connectors with dielectric grease and repair any shorts.
- Shorted or frozen AIS motor - The AIS motor is located near the TPS. For 1987 or earlier Turbo I engines, remove the bolt and slide the motor out (you may have to wiggle and twist it). Remove the clamp and carefully pull out the motor. Be sure and observe how it goes together, especially the orienation of the rotatiing valve inside. Hook the motor to a 12V supply to see if it runs. If it doesn't, replace the AIS. Clean all the gears and shafts throughly and reassemble the gear and valve assembly. Spray all the gears and parts with TriFlo or a similar silicone spray lubricant (don't use WD40 because it evaporates) and insert the motor. If the engine seems to race wildly after assembly (give it some time to get control), you probably installed the internal, rotating valve backwards.

Code 41 - Alternator field control circuit open or shorted

Possible Causes:
- Bad connection or wiring - Check the wiring and connections between the logic module and the power module. Clean and regrease any corroded connectors with dielectric grease and repair any shorts.
- Bad voltage regulator circuit

Code 55 - End of message
No further fault codes are stored. If this is the only code received, then there are no codes stored in memory. This code will always be given, even if nothing is wrong. If you do not get this code, then you may not be retreiving the codes properly, or the power loss light may be burnt out. The light should come on for 1 second when the ignition is initally turned on as a bulb test.

Hope this helps; also keep in mind that your feedback is important and I`ll appreciate your time and consideration if you leave some testimonial comment about this answer.

Thank you for using FixYa, have a nice day.

Oct 31, 2012 | Cars & Trucks

1 Answer

Car starts but as soon as gas pedal is removed it dies out

A common problem with Chrysler products is the Idle speed control motor failing. Chrysler calls this an air idle solenoid or AIS. You can purchase one for your vehicle at your local parts store for around 50 dollars. It is held in place by 2 t-25 torx screws.

Sep 07, 2011 | Plymouth Acclaim Cars & Trucks

1 Answer

95 plymouth voyager 3.3 cranks but wont stay running unless I hold down accelorator

Sound like you need to replace the AIS motor. This is the idle control (air, idle speed). They cost around 50 dollars, and are bolted onto the side of the throttle body with 2 t-25 torx screws. It may be easier to remove the throttle body to gain better access to these screws. The throttle body gasket usually does not tear, and can be reused.

Sep 05, 2011 | 1995 Plymouth Voyager

1 Answer

My 1988 plymouth horizon runs fine when on throttle but when i let up it spits nd sputters and dies. I have checked the charging system and it brings up no codes.

Check and clean AIS motor. (automatic idle speed) sometimes referred to as IAC as well. ( Idle Air control) same thing. remove it and clean pintle (pointed end) well with throttle body spray cleaner, as well as port it comes out of, and try it. If it's cured great, if it happens again a little later, replace it.

Sep 14, 2010 | 1988 Plymouth Horizon

1 Answer

1990 Voyager. Need code definitions from check engine light. Codes retrieved by turning key on 4 times and counting check engine light flashes. codes were: 12 41 25 55.

here you go hope it helps,dont forget to vote on answer thanks
88–95 3.0L (Except Monaco, Premier & Stealth),
3.3L, 3.5L & 3.8L Engines
Engine Has Not Been Cranked Since Battery Was Disconnected{4}
No Crank Sensor Signal During Engine Cranking{3}
Memory Standby Power Recently Lost
MAP Sensor Pneumatic Circuit
MAP Sensor Electrical Circuit
Vehicle/Distance Sensor Circuit
Loss Of Battery Voltage Sense
Engine Running Too Cool
Problem In Oxygen Feedback Circuit
Coolant Temperature Sensor Circuit
Charge Temperature Sensor Circuit
Throttle Position Sensor Circuit
AIS Motor Drive Circuit
Injector Current Limit Not Achieved
Injector Driver Interface Circuit{1}
Injector Control Circuit{2}
Purge Solenoid Circuit
EGR Diagnostics
A/C Cutout Relay Circuit Or A/C Clutch Relay Circuit
Fault In Speed Control Solenoid Driver Circuit
Fault In Fan Relay Circuit
Part Throttle Unlock Solenoid Driver Circuit
Fault In Charging System Or No Field Current
Fault In ASD Relay Driver Circuit
In Ignition Coil Control Circuits
Lose Of FJ2 To Logic Board
Battery Voltage Is Too High
Battery Voltage Is Too Low
Lean Condition Is Indicated
Rich Condition Is Indicated
Internal Problem In Module
Fault In Distributor High Data Rate Pickup Circuit{1}
No Sync Pickup Signal{2}
End Of Message
Unsuccessful Attempt To Update EMR Mileage
Fault Error{1}
Controller Failure EEPROM Write Denied{2}
Manifold Tuning Valve
CCD Bus System
Speed Control Relay Circuit

{1}—1988–91 models.
{2}—1992–95 models.
{3}—1990–95 models.
If you need more just ask Thanks Db

Aug 18, 2010 | 1990 Plymouth Voyager

1 Answer

What is an AIS Motor. I have a 1989 Jeep Cherokee 4 wheel drive., straight 6 engine. Also what is a PCM Computer

I have never heard of an AIS motor on a jeep or any other vehicle for that matter. A PCM is the computer that runs the cars Electronics. Without the PCM the car doesn't run.

Jul 21, 2010 | 1989 Jeep Cherokee

1 Answer

Need to know what codes 13, 25, 41 are for ecm

13-"map sensor" vacuum side not working properly, or has vacuum leak.
25- AIS (automatic idle speed motor) malfunction, may be caused by vacuum leak as well, but check electrical connections.
41-alternator field circuit open, or shorted.

What problem are you having with vehicle, or does this point you in right direction?

Apr 16, 2010 | 1991 Plymouth Acclaim

1 Answer

My 93 dodge akota has a high rpm idle and fault codes 12 and 25 any answers

code 12 tells you that the battery has been disconnected recently or it went dead .. code 25 is for the automatic idle speed motor (AIS)... it did not respond to the computers command for speed change .. the AIS motor can be bad or frozen .. thats mounted on the throttle body. you can try lubing it ..
here is more info if you need it:

Dec 31, 2009 | 1993 Dodge Dakota

1 Answer

I am getting fault codes 34, 53 & 25 on a '93 dodge dakota 3.9L magnum...could you tell me what problems these codes specifically refer to so that I can fix the problems?

25 Automatic Idle Speed (AIS) motor driver circuit shorted or target idle not reached, vaccum leak found 53 Logic module internal problem

have you tried to reboot the ECU by removing the pos battery terminal for a few minutes

Nov 30, 2009 | 1993 Dodge Dakota

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