Corolla 2000 vvti throttle body hose diagram - 2004 Toyota Corolla

Throttle body is located where the hose from the air filter box meets the engine. Big black hose. Remove this hose from the engine side and this will be the throttle body/plate assembly. If it is black/oily inside, clean with carb spray and a toothbrush to remove any dirt/deposits

its laying around the engine its a black vacuum hose . in some models they dont use that connection an the connector is capped over with a rubber cap

Hi Chuck !
You can find the solution here. Hope this help you.

How to replace thermostat Toyota Corolla. VVTi engine. Years 2000-2008.

How to change Thermostat Toyota Corolla. VVTi engine. Years 2000-2008.youtube.com

NO YEAR?
scans good, no stored or pending DTC codes>????????
dirty MAF, (if MAP EFI, clogged map port?)
low fuel pressure>?
bad need of simple tuneup?

Here's the vacuum diagram. 2002 Toyota Corolla vacuum diagram Bing images

V8 behind throttle body -follow radiator hose

V6 in hose on driver side, about middle of engine
at the front

SPI Vacuum Diagram


Zetec Vacuum Diagram

SPI Vacuum Diagram


Zetec Vacuum Diagram



Zetec Vacuum Diagram

If it's equipped with the 2.0L SPI engine (eighth digit of the VIN is 'P'), the most common place for a vacuum leak on these engines, is from the PCV hose that runs from the valve cover to the back of the throttle body. Where it usually rots through is the elbow at the back where it connects to the throttle body. Hope this helps. The only place i could find any views is here. vacuum hose diagram - Focus Fanatics

THERE IS NO CONVENTIONAL TPS, THROTTLE POSITION IS PART OF THE DRIVE BY WIRE SYSTEM IN THE THROTTLE BODY ASSEMBLY

change air filter.clean throttle plates.remove throttle body remove all electrical parts also all plastics and rubber parts.clean throttle body with gum out throttle body cleaner.dry off throttle body.replace gasket.scan it to check to see if egr valve leaking.also check all vacuum hoses.and pvc valve.

on the side of the throttle body where the air intake hose hooks to the engine from the air cleaner. see photo of sensor

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