alright, so my idle was surging. and blah blah blah...

replaced the IACV, flushed coolent, replaced the PCV with oem ,turned the screw on the top of the TB all the shut, and the screw on the bottem of the TB fell out, and we sprayed the intake manifold and vac lines with brake cleaner looking for a vac. leak. and finaly stoped the surge... it idels a littel low IMOP

(and adjusting the screw on top just makes it surge again so idk how to bump it up any butttt....)

now after all that my TB will stick when i try to hit the gas(only after start up or after getting into it and being wide open. its really annoying. i have to like stomp on the peddel to get it to open up...

so what could it be?

the screw that fell out on the bottem? (that dosent appear to even do anything. (even on my spare TB?)

or maybe the brake cleaner took off some grease that should be there? other then those 2 things i have no clue what else would cause this.

the cable has some slack but its not exsessive...

hope some one can tell me what went wrong?

(also the cable was not adjusted at all)

 

no one knows what would make the TB stick closed? ugh. lame :/

 

Are you sure it's the t/b and not the cable? Check that as well.

 

Brake cleaner is a little harsh, you should have used carb cleaner. I would try greasing some of the moving parts. This only happens with the car running?

 

it might have been brake or carb cleaner im not to sure.... the guy i know did it... im thinking it may be that top screw...

i just had the car idleing and the peddel was stuck. when i turned the car off and hit the gas to free the peddel (for next time)

it sounded almost like there was a vac. sucking and then when the tb opend it sounded almost like a discharge. maybe that screw has to pull out some.(hope not cuz it will start its surging again :/)

and like i said the cable worked 100 percent prior to this and it wasnt adjusted at all so it has to be in the TB im gonna try to pull that screw out and see what happens(other then a surging idle)

 

tps sensor calibrated?

 

You probably already checked some (or all) of these, but a couple of things come to mind.

1. The screw that fell out has to do something - can you describe where it came from? My immediate thought is that this is a throttle stop that prevents the butterfly from closing too far. If the valve closes too tightly, then the force to open it will be significantly higher.

2. The diagram I have on an 93-94 shows the throttle cable goes under the throttle "pulley" and wraps clockwise around to the top, where it attaches. It is conceivable that the throttle is opening the wrong direction now. Mine turns counter-clockwise when accelerator is pressed.

3. Carefully check the throttle cable for a nick or break in the braids where the cable comes out of the cable adjustment asy.

4. It could be that the throttle pedal releases more than it used to and now the linkage under the dash is binding or is pulling at an angle that is too shallow. That means that most of the force is being applied against the pivot or hinge instead of trying to move the load.

Hopefully, I explained my thoughts sufficiently.

 

actualy thats very helpful Duanes,

1. the screw ur talking about is the same one i am... only thing is i do not see how it pays any affect b.c to me it looks like it would just make it stick but i guess im wrong? but read down on the bottem about this part...

2.the throttel cable is routed properly. and was not adjusted at all when dealing with this idle surge but a good idea.

3.i have yet to check the cable, but like i said; we didnt do anything to the cable so chances that the cable is damaged is slim, but thats also a good idea i over looked.

4. im kinda lost on this one... but like i said no cable adjustments were made so idk how that could have happend, i do know that when the the gas is applyed the cable dose pull like the slack that is in it(not exsessive but is some) gets tight when the gas is pressed. and also i dought that it is the cabin b.c even when the throttel is "stuck" and b4 i forced it with the peddal.. i cant open it up by hand under the hood with out struggel b.c its real tightjust like if i was on the peddal though

if i was to bet on any of those 4 id bet #1.. lucky i have an extra on my other TB.. but like even on the other one(that iv never used though).. the screw isent even high enough to hold it open any... more it shuts all the way.. iv never used it but im sure the last owner did?

thanks for the help!!

 

If part of the mechanism of the throttle stop fell off it's not hard to imagine why it sticks closed...

 

ok. explain to me how?

i hate how people put up post that are exectly like that. if all you can say is "i know why its not working" or "its easy/not hard to imagine blah blah" explain to me what it is that you know, im seeking info. be helpful, atleast have intentions on trying helpful, learn something, or be quiet . thanks

p.s
(im not trying to be a d!ick either, but its really annoying when some 1 says "its not hard to imagine why it sticks closed" when maybe for some of us (like myself) it is, if it wasnt then people (like myself and many others) wouldnt even use this site and the site would be of no use anyone other then shareing pictures. this is why H-T is here.

sorry for going on and on.

 

okso i tryed to get the littel hex bolt out of my other TB and its striped out.whos got one or know where to get one

 

20 dollars says...

(Since I know you just did alot of cleaning on the IM) you probally cleaned off the grease on the Throttal body rotar. If its not greased it will stick, and do whatever else, etc, etc.

So go and grease the TB rotar and see how that is. As for that screw, if you really think its the screws issue, take that TB to the home depo and fine a replacement screw.

Or if you want, I can sell you a functional TB.

 

yeah i thought the amount of cleaner used was very exessive but i wasnt even to sure if it was suposed to be gressed or not. it was just a thought while trying to trouble shoot. is there a good way to grease it back up, for enstence a spray or something?

funnything u mentioned home depot i work at 8 of them lol and yeah as a last result that tb you have.. thanks acid!!

oh and for the screw being the issue. i dont think it is b,c the screw i have in my other tb that is striped or id use... isnt even high enough to hold the tb open so the grease idea is prob it!