Teuf

Ah hah, and what happens as its being driven.

norcal707

the truck runs good on the highway, on the video, I am pushing and holding the pedal down and as you can see the rpms goes up and down. it sure look like I am doing it but I am not. however, I found out the PAIR reed valve makes a clicking noise and when i take off the little vacuum hose, it stop right away.

boxer.fan

Could this be a rev limiter issue??? Just wondering if this could also have an ignition issue. I beleive where your at in Willits, which is NorCal, the smog test will consist of 2 idle speed test which is where the tech only idles the engine and not on a roller system, dyno machine, like here in SoCal.
Hey Citrus, I also have my smog licence, here in SoCal we have to have the Advanced Emmisions licence. Dont remember if Sacramento requires the Advanced or just Basic.

CitrusTheDragon

I am still in school getting mine and I will be getting the advanced

norcal707

yeah the shop doesnt have the roller system....

CitrusTheDragon

The smog dino???? Ok now I am lost, u sure u are getting a smog check

Keith B.

Definitely fix the problem with the vacuum, throttle, etc BEFORE you take it for another smog test anywhere.

Teuf

I don't think he is moving his foot to make it fluctuate, there is a prob some where. Stay with us there is an answer somewhere.
Necessity is the Mother of all inventions.

whorider

It depends on what county you live in. Some don't require a dyno. As a smog tech you should know this. Just enter the VIN and the computer tells you which test is required, dyno (enhanced) or static (basic). Some counties only require a smog when you change ownership.

To the original post.
Have you ohm tested the TPS? Checked its sweep? That would be a good place to start. Check out the FSM for specs and which terminals to check.

norcal707

I have to do the smog to put it under my name.

CitrusTheDragon

Don't have my full certs yet still in school

bio6040

I took my 86 4runner to a smog station in socal on Friday and the tech said my timing was advanced to high so when he went to adjust it he jumped the larger yellow test plug (the one with 3 wires in the back) not the smaller one (the one with 2 wires in the back) and the engine died and now it will not start. He replaced the coil and cap and rotor. Now he is saying it is a different problem and it must have been pre existing! Does anyone have any idea what he could have done? Any help please. Sorry to thread on someone else's thread!

norcal707

no problem bio6040

norcal707

ok!!!!!! update: I have put a new thermostat, check all the hoses, and took it for a cruise....I was driving on the road and ones the rpms come to 2500, it does the same thing, like that engine wants to die. I also found that this valve makes this loud clicking noise, as soon I take the small vacuum hose, it stop.
http://i966.photobucket.com/albums/a...0705-11501.jpg

norcal707

and here my 4runner...just to show you all my fuss is about.....

whorider

If you don't feel up to ohm testing your TPS at least disconnect it and try it.

norcal707

i dont have anything to test it....I will disconnect it and see what happend...

norcal707

TPS=throttle position sensor right?.....this little black sensor

norcal707

BINGO!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! I disconnect this sensor and rev up the engine to 2500 rpms, hold it for 90 seconds and no problem what so ever....I am reading on my manual and is telling me I have to test the ohm but I dont have one.... I guest I have to wait for payday to buy one.....THANK YOU WHORIDER for suggesting this....

helidriver

When I bought my truck in SoCal it was explained to me that it was the sellers responsibility to make it pass smog before the sale....