TPS check
On The Tree
Joined: Nov 2007
Posts: 130
Likes: 0
10-04 previous post.. should have +5 v between ref voltage gray wire and ref ground black wire. Then move positive lead to dark blue wire.. it should read 1 V or lower with throttle closed (TPS%=0) and smoothly increase to 4.5-5.0V as throttle opens all the way (TPS%=100). If there is a flat spot or the voltage jumps erratically replace the TPS.. Also you could try your scantool w/ignition on and engine off to see if it gives dependable voltage readings, I have never tried that procedure. ...Bob D
Last edited by bobdec; Feb 11, 2009 at 02:44 PM. Reason: spelling
10-04 previous post.. should have +5 v between ref voltage gray wire and ref ground black wire. Then move positive lead to dark blue wire.. it should read 1 V or lower with throttle closed (TPS%=0) and smoothly increase to 4.5-5.0V as throttle opens all the way (TPS%=100). If there is a flat spot or the voltage jumps erratically replace the TPS.. Also you could try your scantool w/ignition on and engine off to see if it gives dependable voltage readings, I have never tried that procedure. ...Bob D
TECH Senior Member
iTrader: (3)
Joined: Oct 2006
Posts: 7,564
Likes: 4
From: Decatur, TN (N-W of Athens)
2.5v WOT is WAAAAY too low. Should be 4-4.5v WOT. I actually don't get over 4v with mine, but I chalk it up for being a stupid 93 lol
2v is also waaaaaay too high for closed throttle. Should be .54-.68v
2v is also waaaaaay too high for closed throttle. Should be .54-.68v
I will save the time and trouble of explaing and just give you the link to a good write up with accurate info 
http://www.mainstreamtopics.com/foru...showtopic=1315
http://www.mainstreamtopics.com/foru...showtopic=1315
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Verdad Gallardo i have a scanner, but i dont know how to use it for crap. its an AutoTap. I use it to check my SES light, and data logging. as for checking voltage on individual parts, i have no idea on how to do that.
TECH Veteran
Joined: Dec 2008
Posts: 4,145
Likes: 61
From: Little Rock, AR
Look through the parameters until you find it. It's not rocket science.
