If the throttle is not fully opened, there will be insufficient engine response, jerks and dips in the engine when the car is moving.
A sign of incomplete throttle closing will be an increased idle speed and increased fuel consumption.
Contaminated throttle body with crankcase deposits usually results in erratic idling
If these problems occur, you should try flushing the throttle body with a solvent or carburetor cleaner
Removing the engine throttle body
We prepare the car and disconnect the negative battery terminal
Draining the coolant from the engine cooling system
Remove the decorative engine cover
Remove the air filter cover assembly with the air supply sleeve
We release the fuel line from the holder on the throttle assembly
Disconnect the wire block from the throttle assembly
Release the harness holder with a screwdriver and remove the harness from the holder
Disconnect the coolant inlet and outlet hoses from the throttle assembly by squeezing the bent antennae of the clamps with pliers and sliding the clamps along the hoses
We also disconnect the adsorber purge valve hose from the throttle assembly
Remove the vacuum hose from the intake pipe from the nozzle of the throttle assembly
We unscrew the four bolts securing the throttle assembly to the intake pipe and remove the bracket for the harness holder, the throttle assembly and the sealing ring installed under it
Replace a heavily compressed and hardened ring
If the throttle assembly was removed not for replacement, clean the contaminated throttle assembly with carburetor cleaning fluid
Remove oil and other contaminants from the cavity of the intake pipe
Install the throttle assembly in reverse order
