1995 toyota 3.0L egr vaccum silinoid if it goes out will it make it start up then shut off

are you getting any trouble codes?

The MAF sensor is a grid that detects flow rate of oxygen amongst others minute quatities to be compared with other sensors to tell the ECU when to open up the egr...It's a matter of creating NO2 to reduce the combustion intensity by pumpin' exhaust back in...kinda irritating~ technology has moved on such that we don't need these things anymore~

no check engine light on. but i don't know if it is because it will not stay running long enough or not.i have heard MAF sensor or TPS sensor

TPS sensor is like the accelerator cable of ye olden days also called the accelerator position sensor does the same thing...you may not have a MAF or MAP sensor the EGR sensor is usually located between the two MAP the security guard to make sure the MAF combined with the EGR's position is producing a minimum amount of bad stuff...at cost of acceleration and gas mileage...ain't that a hoot~

You could simply disassemble and clean the unit, rather than replace it, though replacing it is a lot neater and easier on the lungs with all that solvent~

I just got 2 code off of it and 1 was dtc:42 vss circuit and the other was dtc:43 starter signal circuit. The vss I think is vehicle speed sensor and the starter circuit is ecm

You see---you've answered your own question~

why can't we just go back too the old school car where if it did not start or run you checked fuel or fire

I know----where's my damned distributor cap? where's my speedometer cable? where's my accelerator cable? where's my mechanical radio selector presets that don't change if the battery is removed? what is this world coming to? I had a scale what required a battery..the Detecto needed no battery, did not have a digital display...don't know why it's important to have a digital display...I like hands on my clock~

Yep they messed up a good thing when they came up with all this high tech crap

the thing is they let kids with their damned computers design things that are deliberately contradictory to good design sense....like forcing all the critical forces into one tiny weld/concern so failure occurs most predictably~ should talk to a few old time mechanical designers to stay out of trouble...an example is the oval...you know how much trouble it is to set up for cutting an oval....it is horrible...but a computer once programmed can spit out all you need in short order....robots don't take SMOKE breaks (if they are any good) nor do they require the lights to be on in the plant....will show you a MINI plant that is astonishingly free of people~