TPS/throttle body

[garrek11]

ok so i cleaned out my throttle body and re adjusted my tps and i would like to know how far the throttle body should be open?

 

[garrek11]

ok so im gonna try adjusting my BISS and if that doesnt get the idle down a little enough to drive home then im gonna get a new tps. sound like a good idea?

 

[garrek11]

ok so i adjusted the BISS and the car idles great however when i hit the gas the throttle stickes open but then i pull the gas pedal back with my foot and it goes back to good idle. oh and is that spring that is connected to the throttle cable area suppossed to be loose?

 

[rush2252]

Clean all the carbon build up on the TB. Then adjust the cable and make sure the spring isnt sprung. If all of this is done and its still sticking then time for a rebuild. My 2g stocker sticks horribly. The shaft seals are shot and it almost runied the TB I just swapped it for the 1g BBTB

 

[95fwdtsi18psi]

1) I have a 1g, and my throttle says 0% when it's closed, and 100% at WOT. Anything else would make me think something is wrong.

2) Of course the TPS is not supposed to hold the throttle open. You're putting it on wrong! You have to turn the TPS slightly in the direction that the throttle opens, slide it on, then twist it in the direction that the throttle closes and put the screws in. That will rest the sensor on the correct side of the throttle shaft.

Told you OP

 

[garrek11]

what do you mean that the spring isnt sprung? should that spring always be tight?

 

[garrek11]

so wait is that spring that is right behind the throttle body is that supposed to be tight or loose? ### mine is loose as hell i can move it back and forth side to side it looks like it has no purpose?

 

[rush2252]

It should be wound tight enough to return the throttle plate.

 

[garrek11]

yep that is my problem then it has no tension at all. does that sound like a prob that would make my throttle stick?

 

[garrek11]

how do you adjust the spring without taking the throttle body off?

 

[garrek11]

so i noticed i needed to adjust the throttle cable ### it was too tight. and it fixed the prob a little when i rev the car so that the BOV goes off the car goes back down to regular idle but if i make it idle just around 3500rpms and let back off the throttle it doesnt go back down to regular idle.

 

[LKWTSI]

ok so i adjusted the BISS and the car idles great however when i hit the gas the throttle stickes open but then i pull the gas pedal back with my foot and it goes back to good idle. oh and is that spring that is connected to the throttle cable area suppossed to be loose?

What do you mean by loose There is two springs, one inside the other and the tension on both springs is fairly tight. If you had them off to clean your TB you may not have wound them back on to the proper tension. From what you're saying I guess you didn't do one of two things 1. tension both properly or 2. the inside spring isn't attached and you're not getting the return on the butterfly you need.

Also, the TPS slides over the end of the TB shaft and on the early 1g's that end had two ball bearings in the end which locate on the inside of the TPS. As the TB shaft rotates( you pressingon the gas pedal) the inner ring of the TPS is moved by the ball bearing and this in turn moves the potentiometer in the TPS and that is converted to a signal that the ECU can read. 1g's need to be about 0.9K ohms at closed and about 5.0k ohms at WOT. This equates to about 10% and 100% on your datalogger.

I suggest you check the return spring before you go much further with this and make sure you have the BISS adjusted properly.

 

[garrek11]

ok i didnt take apart the two spring i know there is a inner spring that is green then there is a gold outside spring that is visible and can touch with your hand. that is the one that has no tension is it suppossed to?

 

[Colt4G63 also]

I have no idea about what your loggers say, I just use link. I set my tps to the prescribed .63 volts, and my TPS % logs from 0% to 100%, and my car likes it that way just fine. I can't speak for other peoples adjustments, or level of expertise.

Yes, that spring/springs is/are what closes your throttle. It's the only thing that closes your throttle. If you look closely and analytically at it, you should be able to figure out what the problem is. It's not a very complex piece of technology.

They both should do something. Contrary to popular belief, car manufactures don't buy/build and install millions of parts on cars for no purpose. One extra useless spring on each and every car produced and sold around the world, would add up to millions of wasted dollars.

 

[LKWTSI]

I have no idea about what your loggers say, I just use link. I set my tps to the prescribed .63 volts, and my TPS % logs from 0% to 100%, and my car likes it that way just fine. I can't speak for other peoples adjustments, or level of expertise.

I presume the DSMLink reads differently from other software, but from what I can figure out is that, the TPS range is from 0-100, but depending on the type of logger you use the readings will be either 0-100 or 10-100. The ECU only sees what the TPS sees, not the logger. So I guess if your software can handle reading the 0% fine, my software translates 0% TPS as 10% logging value and from what I can find doing searches most people understand that 1gs show 10%. So lets call it quits and leave it at that.