jacobgonz Posted June 5, 2011 Report Share Posted June 5, 2011 How can i check the EGR vacuum switching valve of my 1996 Rav 4. thanks Link to comment Share on other sites More sharing options...
chandrakumar Posted June 5, 2011 Report Share Posted June 5, 2011 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. Link to comment Share on other sites More sharing options...
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