Tercel4WD.com

you can get that tvsv off any 3ac tercel at junkyard....got mine for a dollar and off of a 3-door tercel. mine broke on a stress point and the glue didnt hold it good.

... messed around with a bunch of stuff when I first got the car to try and get it running right...didn't want to read the manual. Then I broke the TVSV putting the vac hose back on it....then found that Toyota wants $107 for this little brass & plastic POS...so I'm going to glue it back together....it ...

... engine warm and at 3000 RPM I got a reading of 3" Hg. Saw that the EGR valve opens fully at around 4" to 5" Hg. * I didn't test the TVSV...the test above says the EGR works. I think. <span style='color:blue'>Final note: Seems that a functioning EGR might cause a loss of 5% in "power" ...

... out right. Also found that the vac line on the EGR and Vac mod were switched and that a restricter was missing from a vac line. Haven't tested the TVSV yet. Note: IT IS VERY IMPORTANT TO CLEAN THE CARBON OUT OF THE EGR VALVE PASSAGE ON THE ENGINE BEFORE INSTALLING THE NEW VALVE This is with a car ...

... the EGR...found that hoses to the EGR & vac modulator were reversed...then had to adjust TP setting front of carb (high idle)...then had the TVSV break (controls the EGR among other things). Meanwhile found that water injection is probably reducing power by 13% or so, without improving MPG ...