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Technican: "Remove the two Torx screws holding the AIS unit and pull it out.
A later Turbo I, or any Turbo II, or any TBI engine, then you have the pintle-type AIS motor. Remove the AIS unit and rotate the pintle clockwise to screw it in. If it spins easily, then you can try to clean the pintle and shaft with solvent or carb-cleaner. Reconnect the cable to the AIS motor and have someone turn the ignition on. Watch the valve for movement. The valve should spin out, and maybe back in again. If there is no movement, then you may have a bad or seized AIS motor, or a wiring problem. there is little that can be done with these motors besides replacing them.
Minimum Air Adjustment
This adjustment is to set the amount of air that will pass through the throttle plate during idle. It is specified in RPM. It is important that you clean out the throttle body BEFORE performing this adjustment.
In order to make this adjustment, the AIS bypass passage needs to be shut off. The easiest way to do this is with a diagnostic scan tool. Most of them will allow you to instruct the computer to close the AIS valve using a test mode. If you do not have a scan tool, you can use this method (special thanks to Steve Calder for the vacuum leak idea):
Induce a large vacuum leak by disconnecting the brake booster line. This will cause the engine speed to increase greatly (around 3000 RPM or more).
The engine speed will drop as the computer tries to compensate by closing the AIS valve.
When the engine speed stops going down (give it a minute or so), disconnect the connector on the AIS motor. With luck, the AIS valve is now closed. This will also set a fault code 25.
Reconnect the brake booster vacuum line (the engine may stall, so open the throttle a bit).
You now have the throttle body configured for minimum air. If the engine stalls with the AIS shut, you will have to hold the throttle open slightly while the engine is started and running. Adjust the throttle stop screw to change the minimum air adjustment. If you have an external tachometer, connect it to the negative side of the ignition coil. Otherwise use the tachometer on your vehicle (if you have one). Use the stop screw to adjust the idle so that it is between 500 and 700 RPM.
When finished, shut the engine off, disconnect any tools, and reconnect the AIS motor connector if you removed it. When the engine is restarted, you may find that it takes a while for the engine idle to settle. This is just the computer "re-learning" to control the AIS motor. When the engine has reached operating temperature, it should idle around 800 RPM with the A/C off."
Owner: It seems that I fail to tell you that this is a carburator type of engine and not a fuel injection.
Oscar
Technican: the ais is the idle speed motor on a carburator engine when there is power to the unit it will open and no power will allow it to stay closed if it is not moving then it is also defective
Owner: In the wiring diagram I found a throttle position sensor but I dont know how does it look like or where is located at. Thanks
Oscar
Technican: it should be located on the throttle shaft on the aluminum port where the air enters the throttle body it has two screws and a 2 wire connector
Owner: I still think that this would be good for a fuel injection system but I have a carburetor and I see no aluminum parts. Thanks
Oscar
Technican: I do understand that this is a carburated system
the tps is located by the lever where the cable comes into the carburator
I hope this helps Here's How To Get Guaranteed Solutions In Minutes
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