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1993-1997, 4Cyl. Probe Maf Cleaning Procedure - Adamk

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1. Disconnect the 2 electrical harnesses from the MAF and the air box.

2. Loosen the ring clamp that holds the MAF to the intake tube.

3. Remove the four 10mm bolts that hold the MAF to the air box.

4. Undo the air filter cover clamps and slide the air box cover forward. Remove the MAF.


5. Remove the 'C' ring that holds the screen in the MAF using a small screw driver or needle nose pliers.

6. Remove the screen. Spray with carburetor cleaner and wipe clean.

7. Gently spray carburetor cleaner onto the two filaments in the small hole of the MAF (marked by arrow in pic to the right).


Continue gently spraying until there are no visable deposites left on the filaments.

(Carburetor/Choke cleaner is recommended. DO NOT use any type of penetrating oil such as WD-40 to clean the MAF)

8. Insert the screen into the MAF and lock it in place with the 'C' ring.

9. Insert the MAF into the intake tube and tighten the ring clamp.

10. Replace and tighten all four bolts into the MAF, secureing it to the air box cover, and clamp the two air filter cover clamps tight.

11. Reconnect the two electrical connectors.

12. Start the engine and check for proper operation.

Update: Several people have suggested that I include the procedure for resetting the cars computer after the MAF is cleaned. This is a good thing to do since the computer will re-calibrate itself to the new readings that the MAF Sensor is providing.

1. Disconnect the negative battery cable.

2. Step on the brake pedal and hold for half a minute or so.

3. Reconnect the negative battery terminal and start the car. The engine may stumble or idle rough for a little while as it recalibrates the cars systems. It may take up to 40 miles for the computer to complete this operation.

I recommend just driving the car normal, with speeds ranging from stop and go, to highway tavel, to ensure a proper calibration.

Original Source no longer live: geocities.com/adamk01452/

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