Check the EGR vacume switch

[jacobgonz]

How can i check the EGR vacuum switching valve of my 1996 Rav 4.

thanks

[chandrakumar]

You just be having lght one??????

Read below, sourced from google. Same problem hapen with my sis in law rav 4.

seems to be a failed switch(vsv). seem to be common on rav4's. Toyota went ford quality on that switch. Here's 1 of a few fr a fellow tech.

1996 Toyota RAV4

Engine: 2.0 L / 4 cyl / Gas / DOHC

Fuel: Fuel Injection

Ignition: Distributorless

Trans: 4-speed Automatic Transaxle (Electronic)

Mileage: 164,000 mi

Emissions: OBD-II Compliant

VIN: JT3GP10V2W

Symptoms: MIL Lamp on

Occurs: Always

More Info: Test results included below

_______________________ CLOSED W/FIX _______________________

This one stomped me with all the vsv valves I have

replaced in the pass. It did show a little high on

resistance but the vacuum that was coming out is the same

as the new one. I did install a new vsv valve and the

moniters did run and no more ck engine lights.

_____________________ ORIGINAL MESSAGE _____________________

This car has the egr PO401 in it. I ck the egr with hand

held vaccum pump and it killed the engine. Ck for vacuum at

the egr valve and there wasn't any, ck and replaced

transducer. Now I have 20in of vaccum at egr valve, and the

egr valve is opening. I cleared the codes, test drove and

it sets a pending code quick. I went ahead and remove the

valve and all passages are open. You give it part throttle

and the valve opens, put in gear and load the engine and it

opens. You can see the map and o2 switch when you pull the

valve open a little. This is the first time I haven't been

able to fix a PO401 code on any car. I have ck for

bulletins in alldata, but nothing on egr valve. Its

something I am over looking and maybe you guys have run

across this before.