Remove the intake manifold assembly with the throttle assembly.
Disconnect the wire terminal from the "negative" terminal of the battery.
Drain the coolant from the engine cooling system (see Coolant replacement).
Disconnect the air supply hose from the throttle body (see Removing the throttle assembly).
Disconnect the tip of the throttle cable from the throttle assembly sector (see Throttle Cable Replacement).
Removing the fuel rail with injectors (see Removing the fuel rail and injectors).
Disconnect the wiring harness pads of the engine management system from the throttle position sensor, idle speed controller, phase sensor, exhaust gas recirculation valve.
Remove the wire end from the coolant temperature gauge sensor (see Removal of the gauge of the index of temperature of a cooling liquid).
Using pliers, we compress the clamp of the hose for draining the coolant from the intake manifold channel..
... and remove the hose from the manifold pipe.
Using pliers, we compress the clamp securing the coolant supply hose to the throttle assembly heating unit..
... and remove the hose from the block fitting.
Similarly, we remove the coolant outlet hose from the other fitting of the throttle assembly heating unit.
We disconnect the tips of the tubes of the canister purge valve 1 and the absolute air pressure sensor 2 from the intake manifold fittings, and also, by squeezing the hose clamp of the vacuum brake booster 3 with pliers.
With a key or a "12" head, we unscrew the nut fastening the tips of the "mass" wires of the engine control system harness.
We remove the tips of the "mass" wires from the stud.
With the same tool, we unscrew the nut of the left fastening of the intake manifold, which also fastens the bracket for the wiring harness of the engine management system and the eye.
When loosening the nuts securing the intake manifold, the studs may come out (see the photo below).
Remove the wiring harness bracket and eye from the stud.
Using the "12" key, we unscrew the adjusting bolt of the generator tension bar.
Remove the alternator drive belt (see Replacing the alternator drive belt).
We shift the generator to the front panel.
Using the "12" key, we unscrew the bolt securing the tension bar of the generator..
...and take it off.
With a key or a "12" head, we unscrew the nut of the right fastening of the intake manifold, which also fastens the wiring harness of the engine management system.
Remove the wiring harness bracket from the stud and move the wiring harness away from the intake manifold.
For the convenience of dismantling the intake manifold support bracket, remove the canister purge valve from the bottom of the car (see Removing the canister purge solenoid valve).
With a "12" wrench, we unscrew the two bolts 1 of the upper fastening of the intake manifold support bracket, and with a "14" wrench, we unscrew the bolt 2 of the lower bracket fastening.
Remove the intake manifold support bracket.
With a key or a "12" head, we unscrew 4 more nuts securing the intake manifold from above and below.
Slide the intake manifold back and remove it from the studs.
Remove the intake manifold gasket.
We close the holes in the cylinder head with a rag to exclude the possibility of dirt and any objects entering the engine.
We clean the mating surfaces of the intake manifold and cylinder head from carbon deposits and dirt.
Install a new seal.
Install the intake manifold in reverse order.
We tighten the nuts of its fastening to the prescribed torque (Applications) …
... in the sequence shown in the photo (for clarity, the mounting points are shown on the removed intake manifold).