TOYOTA PREVIA 91-97 REPAIR MANUAL

AIR POLLUTION 4-2 NATURAL POLLUTANTS 4-2 INDUSTRIAL POLLUTANTS 4-2 AUTOMOTIVE POLLUTANTS 4-2 TEMPERATURE INVERSION 4-2 HEAT TRAN ...

4-2 DRIVEABILITY AND EMI£SIGNS CONTROLS AIR POLLUTION The earth's atmosphere, at or near sea level, consists approximately of 78 ...

DRIVEABILITY AND EMISSIONS CONTROLS 4-3 to the atmosphere by 1 of the 3 heat transfer methods, conduction, convec- tion or radia ...

4-4 DRIVEABILITY AND EMISSIONS CONTROLS al to the nd urface Although ozone at ground level can be harmful, ozone is benefit eart ...

DRIVEABILITY AND EMISSIONS CONTROLS 4-5 EMISSION CONTROLS I See Figure 1 Due to varying state, federal, and provincial regulatio ...

4-6 DRIVEABILITY AND EMISSIONS CONTROLS Intake Manifold Sic e Clean Hose Fig. 5 Blow air from the air manifold side, check that ...

DRIVEABILITY AND EMISSIONS CONTROLS 4-7 Fig. 7 Always inspect the lines for kinks, cracks and loose con- nections Fuel Filler Ca ...

4-8 DRIVEABILITY AND EMISSIONS CONTROLS Fig. 13 Check that air flows from port E to the air filter of the Fig. 11 Testing the ch ...

DRIVEABILITY AND EMISSIONS CONTROLS 4-9 Ohmmeter n No Continuity Fig. 16 Check for ground on the VSV using an ohmmeter Fig. 17 R ...

4-10 DRIVEABILITY AND EMI&SIONS CONTROLS Fig. 20 Always plug the hoses to prevent gas vapors from escaping Fig. 211 view of ...

DRIVEABILITY AND EMISSIONS CONTROLS 4-11 Filter Fig. 25 Check the filter of the EGR modulator for contamination or damage Above ...

4-12 DRIVEABILITY AND EM SSIONS CONTROLS Engine Stopped „ 190914625 Fig. 29 Inspecting the EGR vacuum modulator with the engine ...

DRIVEABILITY AND EMISSIONS CONTROLS 4-13 EGR GAS TEMPERATURE SENSOR I See Figure 34 Remove the EGR gas temperature sensor. Plac ...

4-14 DRIVEABILITY AND EM SSIONS CONTROLS EGR VALVE Remove the EGR valve. Check the valve for sticking and heavy carbon deposits ...

DRIVEABILITY AND EMISSIONS CONTROLS 4-15 REMOVAL & INSTALLATION Bimetal Vacuum Switching Valve (BVSV) I See Figures 40 and 4 ...

4-16 DRIVEABILITY AND EMISSIONS CONTROLS Fig. 43 Testing the check valve for air flow on each side Fig. 45 EGR vacuum modulator ...

DRIVEABILITY AND EMISSIONS CONTROLS 4-17 EGR Vacuum Modulator » See Figure 47 Unbolt the vacuum modulator bracket and extract. ...

4-18 DRIVEABILITY AND EMISSIONS CONTROLS From under the drivers seat, unbolt the ECM from the leg. Carefully disengage the 3 ha ...

DRIVEABILITY AND EMISSIONS CONTROLS 4-19 REMOVAL & INSTALLATION » See Figures 50 thru 55 The oxygen sensor can be located in ...

4-20 DRIVEABILITYANDEMl:5SIONS CONTROLS Fig. 55 ... and the old gasket To install: »Durint| and after the removal, use great car ...