Ok, I feel like an idiot... everytime I do a new mod, i come here asking 'whats wrong'

anyway, I just recently installed an Accufab Sinlge blade throttle body.. and i didnt know anything about the TPS sensor thing... i thought it just plugged in and you were ready to go... well somehow I messed it up when I was playing with it and my check engine light came on and went to Autozone and they plugged in the computer and said the TPS was bad... so I bought a new one. I plugged it in and everything was good... no light... (whew)

now heres whats weird...

when I start the truck, the RPM guage revs up to a little over 2 and then slowly comes down to about 3/4.... and if I give it a little gas while in idle.... the engine rev and the rpm guage dont match up... there is a delay... the engine is almost done with its rev, and the rpm guage then moves.... and I think the rpm guage actually goes higher than what I actually reved it... weird...

so when I drive it, it acts weird too.... when I get on it, the truck doesnt just GO.... there is a delay... almost like a full second or so delay....

someone yesterday said I have to adjust the TPS... that was the first I had ever heard of that... so I went and bought a volt meter and did exactly what the instructions said.... but with NO LUCK...

i put the positive on the grey/white and the negative on the grey/red and I got NO READING at all... i had the key on, but not started...no matter what, i couldnt get a reading (but i did test on a battery and i know the volt meter works)...

so I dont know where I am, but i can guarntee by the way it drives, im not at .98-.99

so then I was thinking... well lets pretend I did get a reading... how do I adjust it... so I took off the TPS and looked... and I dont see how I can turn it... it BARLEY BARLEY moves... when I put the TPS on, is it supposed to have tension already?? cuz mine just kinda slips on and the spring doesnt move at all... i can turn it a little, but if I line it up with the screw holes on the TB, the spring doesnt really move... so Im confused on how I would adjust this even if I did get a reading...

so heres my problem..

1. cant get a reading on volt meter
2. how do I adjust the TPS anyway??

 

I havent done one of these but on a mustang you to do it while it was running. if i remember right you bolt it up but do not tighten it down all the way just enough to move it . there not a whole lot of movement with the bolts in. use your meter and rotate it left or right till you get the right no.s. maybe some one else will chim in that has done this on our trucks. its been awhile since ive done it.


Dale

 

Could i ask How much a TPS is? ROB has a good post on how to set the TPS just do a search for it. I remember him having to drill the hole out bigger to allow for more adjustment.

 

that is the meter i got... which setting should I set it at??




btw, the TPS was $29 at Autozone

 

That meter should work. It is a 0 to 5 volt span.
Your doing it with the truck running right?

You stick a straight pin like your mom uses to hem a dress. One in each wire to make contact so you don't have to cut and splice and all that.

If you can get a volt reading on a known source like your battery then your meter should be set right?

 

im doing with the truck OFF, but the key turned forward... thats what I read to do...

i just tried unplugging the plug, and sticking contact into the plug itself... on both ends... still no reading....

where should I turn the dial to on my meter??? iv tried them all

 

did you install the TPS correctly?




It looks like you've got the meter on the correct setting..

 

im gonna return this meter for a new one... thats only thing i can think of... its not this difficult... i know im doing it right...


anyway, as far as installing the TPS.... i dont think I put it on facing down and twisted it up.... i think i just put it on exactly lined up with the screw holes and screwed....

when u install it down??? and twist up... how much tension do you use?? do you twist it alot or what???

 

ok guys... got it!! my meter was bad

it was at .88, now at .987


so how big a deal is this?? is it noticable? i havent left work yet to tell...


im getting chip reburned soon... thats gonna help the most i bet

 

You want it to be under 1.00 volt. You could probably "fiddle" around with it a bit and get it closer than what you have - maybe .99 - but taking into consideration "meter measurement error", you're probably" as close to .99 where you're at right now. It's not likely any closer to what you have right now will make any significant difference.