Im currently attending Wyotech in Blairsville PA and I have just sat through about 24 total hours of lectures just on sensors and the PCM. I cant even describe how much i learned. But ill just get right down to it. I was curious to see if anyone on here would like to see this info. I can summarize basically how every sensor works, how many different types there are, why they are there, how to diagnose and detect a bad sensor and most important what they do.
If this is something you guys would like to see please let me know.. it is very detailed and very helpful, atleast for me it was... It will be very time consuming to type up and summarize roughly 30+ pages of notes, so if your interested please post and ill see what i can do..
Want to learn about Sensors???
Re: Want to learn about Sensors??? (slowrb20)
heyy whats up? i'm going to wyotech myself. what class are you in now? which instructors did you have for ems and such?
Re: (slowrb20)
aahahhaha good ol todd gillot and jim! call todd "DJ T-Minus" or "gilloticon"!! jim is awesome tho! yeah i do have the gold hatch. you'll know its me cuz theres a few spray painted black spots on my passenger side fender lol. yeah i know wes, but he didn't really help me with my swap at all. i think he helped his buddy back home with an rb20 in a black coupe. do you have the gold coupe?
lol wow dude.. the Rb20 black coupe WAS mine. i sold it to my buddy and i bought the car with the swap already done i just modified it... hes full of s*** lol and you gotta take me for a ride in it. ive never been in an rb25. but i just found an s14 on here i wanna put an rb25 in. but i gotta come up with some money first.. where you live at?
Re: (slowrb20)
haha wow small world! ahhh i see, i think i might have just assumed he helped with it cuz the way he had talked about it. lol. yeah i can def take you for a ride. i live at oakland rooney. i'm assuming you're at indy?
f*** indy lol i live in private.. right behind wes. you know tom o? and yea dude. did you see my old coupe when Wes brought it up here?? i could never figure out why it was so fast. i ran 8.55 in an 8th with out slicks or launch interface or line locks. with just bolt ons. that was spinning up until i would gag it in 3rd to gain SOME traction. but i had TERRIBLE 60ft times.
theoratically 8.55 converts to mid 12s. IN THEORY. but with slicks and a launch interface theres no reoson that car couldnt run low 12s.
theoratically 8.55 converts to mid 12s. IN THEORY. but with slicks and a launch interface theres no reoson that car couldnt run low 12s.
-
rbsileighty
- Posts: 1694
- Joined: Sun Feb 09, 2003 8:10 am
- Car: 92 S13 Hatch w/ RB20 & 05 Audi S4 Avant 6MT
Re: (slowrb20)
On the offer... I'm sure everyone on the forum would love to have a resource close at hand
Post it up! Info is gold
Post it up! Info is gold
Re: Want to learn about Sensors??? (slowrb20)
I have a question;
I am running SDS stand alone on my rb25. And I want to try and use the original on/off air regulator valve (not the Idle Air Cont) as a fast idle valve. I know there were versions of this valve used forever on VW's that would react with heat from the manifold and then shut. But the one for the RB is a 2 wire connector (lt.blu and black). I read that this is supposed to be triggered with the fuel pump relay which suggests that gets ignition. But when I apply 12v to lt. blu wire and ground to black wire nothing happens. I am assuming that this is not a solenoid type valve. So I am wondering, does this vavle need 12v and engine heat from the intake manifold to close?? The mounting points are right next to the coolant passages in the manifold, so I am assuming that this is possible. The other solution SDS has is a gas tank selector valve from an rv.I would rather us the factory one but I hav it just in case.Any help would be appriciated.
I am running SDS stand alone on my rb25. And I want to try and use the original on/off air regulator valve (not the Idle Air Cont) as a fast idle valve. I know there were versions of this valve used forever on VW's that would react with heat from the manifold and then shut. But the one for the RB is a 2 wire connector (lt.blu and black). I read that this is supposed to be triggered with the fuel pump relay which suggests that gets ignition. But when I apply 12v to lt. blu wire and ground to black wire nothing happens. I am assuming that this is not a solenoid type valve. So I am wondering, does this vavle need 12v and engine heat from the intake manifold to close?? The mounting points are right next to the coolant passages in the manifold, so I am assuming that this is possible. The other solution SDS has is a gas tank selector valve from an rv.I would rather us the factory one but I hav it just in case.Any help would be appriciated.
Re: Want to learn about Sensors??? (vitaminD)
It has a bimetallic strip inside, when voltage is applied the valve closes in about 7 or 8 minutes. It is not a solenoid.vitaminD wrote:I have a question;
I am running SDS stand alone on my rb25. And I want to try and use the original on/off air regulator valve (not the Idle Air Cont) as a fast idle valve. I know there were versions of this valve used forever on VW's that would react with heat from the manifold and then shut. But the one for the RB is a 2 wire connector (lt.blu and black).
-
darksurfer81
- Posts: 35
- Joined: Thu Oct 30, 2008 8:58 am
- Car: 1990 S13 RB26DETT
Re: Want to learn about Sensors??? (eh?)
I think i would be great to have a sensor write up. Anything that increases understanding would make things easier.
Gotta Question:
Rb20 t3/t4e with a leak in the ITM & BOV staying open at idle (un-circulated).Car stutters up until a certain point , until the turbo spools up.Now this lean condition, would it make the car back off timing like 15-20*? (30-40*)
Does the O2 sensor have anything to do with timing???
Because I'm just hoping that the engine isn't knocking. I know the Knock sensor will pull timing.
And the MAF in conjunction with the TPS is supposed to sense load and air flow and that should affect timing too.But... this air is entering the system after the MAF, so the MAF doesn't know its there.
I found this on the web:"Cracked vacuum hoses create an air leak that is not metered by the computers systems. When unmetered air is introduced into the system, the computer sees this as an extremely lean condition. This means that there is too much air and not enough fuel. The computer arrives at this conclusion when it monitors the free oxygen sensors. The oxygen sensors' signal is generated by free oxygen passing over the sensor and indicates whether the mixture is to lean or rich to produce the desirable 14.5 to 1 mixture. The computer in turn will try to enrich the mixture to prevent a lean mixture. This will further cause a necessary increase in timing to burn the extra fuel. "
Rb20 t3/t4e with a leak in the ITM & BOV staying open at idle (un-circulated).Car stutters up until a certain point , until the turbo spools up.Now this lean condition, would it make the car back off timing like 15-20*? (30-40*)
Does the O2 sensor have anything to do with timing???
Because I'm just hoping that the engine isn't knocking. I know the Knock sensor will pull timing.
And the MAF in conjunction with the TPS is supposed to sense load and air flow and that should affect timing too.But... this air is entering the system after the MAF, so the MAF doesn't know its there.
I found this on the web:"Cracked vacuum hoses create an air leak that is not metered by the computers systems. When unmetered air is introduced into the system, the computer sees this as an extremely lean condition. This means that there is too much air and not enough fuel. The computer arrives at this conclusion when it monitors the free oxygen sensors. The oxygen sensors' signal is generated by free oxygen passing over the sensor and indicates whether the mixture is to lean or rich to produce the desirable 14.5 to 1 mixture. The computer in turn will try to enrich the mixture to prevent a lean mixture. This will further cause a necessary increase in timing to burn the extra fuel. "
Re: (Sil240)
you have most of what you just said wrong.. i apoliqize that i dont have time to explain it now but i will make the post tonight and then youll be like ohh wow.. thats how that works!!! and the 02 sensor has alot to do with timing WHEN IT IS IN CLOSED LOOP OPERATION. and a vacuum leak with create a lean condition.Sil240 wrote:Gotta Question:
Rb20 t3/t4e with a leak in the ITM & BOV staying open at idle (un-circulated).Car stutters up until a certain point , until the turbo spools up.Now this lean condition, would it make the car back off timing like 15-20*? (30-40*)
Does the O2 sensor have anything to do with timing???
Because I'm just hoping that the engine isn't knocking. I know the Knock sensor will pull timing.
And the MAF in conjunction with the TPS is supposed to sense load and air flow and that should affect timing too.But... this air is entering the system after the MAF, so the MAF doesn't know its there.
I found this on the web:"Cracked vacuum hoses create an air leak that is not metered by the computers systems. When unmetered air is introduced into the system, the computer sees this as an extremely lean condition. This means that there is too much air and not enough fuel. The computer arrives at this conclusion when it monitors the free oxygen sensors. The oxygen sensors' signal is generated by free oxygen passing over the sensor and indicates whether the mixture is to lean or rich to produce the desirable 14.5 to 1 mixture. The computer in turn will try to enrich the mixture to prevent a lean mixture. This will further cause a necessary increase in timing to burn the extra fuel. "