91Toyota

I unplugged my TPS since I am having some surging problems and my truck just idles higher (2200rpm) but doesn't surge. Does it sound like I need to adjust it? Where is the article thingy on where or how to do it?

Thanks!

dcg9381

TPS might impact timing - advance it and make it idle high.
Alternately you've got a vac leak.. I really don't know what will happen.

Search google:
4crawler TPS

91Toyota

Yep, I do have a vacuum leak. I can literally unhook the line that goes to the butterfly assembly to the front top of the valve cover and my truck does nothing. I can see a couple cracks and holes in a couple lines. But when I spray wd-40 or something my idle does NOT change...that is why I haven't done anything yet.

MMA_Alex

try starting fluid or something else that burns easier than wd-40 on the cracks..or just replace em.

the truck should run with the tps unhooked (your thread title question) but it'll run in hobble mode

Matt16

My truck ran and passed emissions with the AFM broken and unplugged.

91Toyota

I dont have emissions or a cat!

1992toyota4x4

ya i just finished my rebuild and i had thought that my egr gasket was leaking cuz i could hear a vac leak, and engine would studder bad at idle, turned out when i pulled the intake manifold off i forgot the hose that goes from the intake manifold to the pcv valve, well i forgot one side of it, found that problem tonight!

DCYota

http://www.4crawler.com/4x4/CheapTricks/TPS/index.shtml

iamsuperbleeder

How does that work? Mine shuts off after about 1 second after startup with the AFM unplugged. I though they shut off the fuel pump or something... unless you jump those 2 wires to fool it...

Sorry for the hijack

91Toyota

its o.k, the thread was dead that the beginning anyway...feel free to ask!