1993 Dodge Caravan Sluggish and sputtering

TOMBUG86

MEMBER
1993 DODGE CARAVAN
6 CYL
2WD
AUTOMATIC
135,000 MILES

Took this van to shop for diagnostic, they told me plugs, coil, wires. Did that at home cause they wanted $389. The van runs worse no change. Took it to another shop, they asked me what type gas I was running I told em Chevron. He told me that Chevron had a bad batch of gas and several cars came in wif same prob. I needed to run Shell Prem. An a Oct booster! Did that No change. I learned how to get the codes from a book. With the key switch. I got code 36 25 5. But code 36 is for turbos by this book I have. Please help

3 Replies

JACOBANDNICKOLAS

MECHANIC
109,747 POSTS

Here is some info I found. Take a look:

Description: AIS (Automatic Idle Speed) motor circuit shorted or target idle speed not reached
Power loss light: Off
Limp-in mode: None

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.

My guess for this is either you have a vacuum leak or there is a wiring problem.

As far as 36, it covers non turbo vehicles too. Here is what I found.

Description: Air switching solenoid circuit is open or shorted
Power loss light: Off
Limp-in mode: None

Possible Causes
Bad connection or wiring - Check the wiring and connections between the logic module and the solenoid. Clean and regrease any corroded connectors with dielectric grease and repair any shorts.
Bad solenoid - The solenoid is located in the right, front fender next to one to three other solenoids.

Let me know if this helps. NOTE: There is no code 5. However, 55 indicates the computer is done.

Joe