Thermostatic Air Cleaner: Service and Repair

1987 Chevrolet Chevette L4-98 1.6LSECTION Service and Repair

VACUUM MOTOR, REPLACE

1. Remove air cleaner, then disconnect vacuum hose from motor.
2. Using 1/16 inch drill bit, drill out the two spot welds holding retaining strap to snorkel. Continue to enlarge as required until retaining strap breaks loose from snorkel.
3. Lift motor and twist until linkage unhooks from control damper assembly. Remove vacuum motor from vehicle.
4. Using a 7-64 inch drill bit, drill hole in snorkel tube half way between the two spot welds.
5. Connect linkage to control damper and install vacuum motor into snorkel tube.
6. Using new retaining strap and sheet metal screw provided in service kit, secure vacuum motor to snorkel. Make certain that screw does not interfere with operation of damper assembly. Shorten screw if necessary.
7. Connect vacuum hose to motor and install air cleaner.

TEMPERATURE SENSOR, REPLACE
1. Remove air cleaner and disconnect hoses from sensor.
2. Pry upward on retaining clip tabs, then remove retaining clip and sensor from air cleaner.
3. Reverse procedure to install.



RENDER: 1.0x

NO RELATED

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • You smell fuel, burning insulation, or see smoke.
  • Brakes feel soft, pull hard to one side, or make grinding noises.
  • The engine overheats, stalls repeatedly, or misfires under load.
  • You are missing required tools, torque specs, or safe lifting equipment.
  • You are not confident in the next step or safety outcome.