tps voltage
- Thread starter schiccc
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"Hey Peter, what's happening? Yea, we have sort of a problem here, yea, it seems you didnt put one of the new cover sheets on one of your TPS reports? Yea, ya see we're putting these new cover sheets on all TPS reports now........did you see the memo about this?
ok i'm sorry, i have zero input for this....i just couldnt resist posting that...
ok i'm sorry, i have zero input for this....i just couldnt resist posting that...
I don't know the exact wires so maybe someone will clue in but you can find which ones I'm talking about through trial and error. Anyways, with key on engine off place a votage meter on the tps (votage between .92-.99). I'm pretty sure it's the black wire and the orange(or black and green). If you have the wrong wires it will read a rather high number...shouldn't be anymore then a volt or so. If you need to adjust it, unscrew the two screws and rotate the tps till it is within range. You might need to widen the holes for proper adjustment.
fred
fred
What are you going to do, shoot it?
It is the Blk and green wires. Stick some safety pins in them and turn the key to on, dont start it. Set the throttle stop screw first, then adjust the TPS to .90-95 volts. If you go higher, the puter may raise the idle because it looks like you are holding you foot on the gas when it sees 1v or more.
You are supposed to use a .003 feeler guage and turn the throttle stop screw till it touches. then remove the guage and turn it 1/4 turn more or something, but I like I said, set this before the TPS.
This prolly will do nothing at all for you. My TPS was at .78v and I set it to .95v, made no difference as far as I can tell.
To quote Probst, "The TP potentiometer operates from v-ref of 5v. The TP signals affect injected fuel, spark timing, idle rpm, and emissions. The TP sensor is an important sensor." He goes on to say that all systems since 1988 dont have an adj. TPS, the puter reads whatever the value is at closed throttle and resets itself when you change sensors. This means that it doesnt matter what it is set at, the puter will compensate.
It is the Blk and green wires. Stick some safety pins in them and turn the key to on, dont start it. Set the throttle stop screw first, then adjust the TPS to .90-95 volts. If you go higher, the puter may raise the idle because it looks like you are holding you foot on the gas when it sees 1v or more.
You are supposed to use a .003 feeler guage and turn the throttle stop screw till it touches. then remove the guage and turn it 1/4 turn more or something, but I like I said, set this before the TPS.
This prolly will do nothing at all for you. My TPS was at .78v and I set it to .95v, made no difference as far as I can tell.
To quote Probst, "The TP potentiometer operates from v-ref of 5v. The TP signals affect injected fuel, spark timing, idle rpm, and emissions. The TP sensor is an important sensor." He goes on to say that all systems since 1988 dont have an adj. TPS, the puter reads whatever the value is at closed throttle and resets itself when you change sensors. This means that it doesnt matter what it is set at, the puter will compensate.
gungfusemaj
Member
Ford 21.95 after taxes IAC spacer with controlable adjustment's used for car's that Idle problem Mass Air welll 70mm is alot of air I had a similiar problem and it was a loose bolt on my manifold and that spacer was big dAMN HELP bUT LIKE THEY SAY From a cold engine unplug the IAC make sure you are at 700rpms adjust if not and then plug it back in when your Idle is at the correct rpm's.
Black 93 Fox
Active Member
schiccc said:
I had the exact same problem. It turned out to by my tb the buttery fly was bent so i put on a diffrent tb and problem solved idleing back at 800-900.
When you check the TPS voltage, I heard you are supposed to connect the positive side of the voltometer to the green wire, and the negative side to a ground, like the engine. I've never done it though.
What's the proper way to do it? I'm about to do it today, but I don't want to cut up the insulation on the wrong wires if I don't have to.
What's the proper way to do it? I'm about to do it today, but I don't want to cut up the insulation on the wrong wires if I don't have to.
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