No.
The switch is to limit the engine RPM if the throttle sticks wide open.
the wide open throttle switch sends a signl at wide open throttle the the ecm to richen the mixture by widening the injector pulse, keeping the injector open a bit longer
A TPS is a variable resistor that tells the engine computer the absolute throttle opening percentage. A switch tells the system when the throttle is wide open for enrichment purposes.
Basically, these throttle performance switches change the value that your throttle position sensor gives the ECU. This, in effect, leads your car's computer to believe that it is reaching wide open throttle sooner. How can you do this without buying a throttle performance switch? Just put your foot to the floor faster! No matter what the manufacturer might claim, your car won't make any more power than it did before you installed the switch, you'll just feel it sooner.
A pressure switch can be normally open or normally closed. It depends on how it was made. The NO/NC should be marked somewhere on the switch. A pressure switch can be normally open or normally closed. It depends on how it was made. The NO/NC should be marked somewhere on the switch.
The TPS on a 1990 is a WOT switch. Using a multimeter set to read resistance, or a continuity tester, check the resistance between the center and bottom terminals of your TPS with engine off and throttle closed completely. You should read continuity (or zero ohms) between those two terminals, and if you manually open the throttle slightly, the continuity should be lost (resistance goes to infinity). A complete test takes more time; the manual states that with a 0.016" feeler gauge between the throttle lever and the throttle stop screw, you should read continuity, which should go away if you put a 0.027" gauge in there. With the throttle fully open ("WOT"), there should be continuity between the top two terminals of the TPS. In between the idle and WOT positions, there should be no continuity between any of the terminals
Disconnect the negative battery cableRemove the air intake duct and disconnect the TPS and wide open/closed throttle switch electrical connectorsRemove the two retaining screws and separate the TPS from the throttle body
If the switch is "closed" both wires should be HOT - with switch open one wire should go COLD-- if not defective switch
Wide open throttle (WOT) is a term used for any engine when the accelerator is held to the floor and the throttle plate(s) are wide open.
To open the convertible top on the 2007 Mercedes-Benz CLK, ensure the vehicle is in park and the ignition is on. Locate the convertible top switch on the center console, then press and hold the switch in the "open" position. The top will automatically retract, and you should wait until it is fully down before releasing the switch. Always ensure there's enough space above the vehicle for the top to open completely.
It should open from the inside. Then the switch is usually in the latch for the door. HTH
You didn't mention what engine...etc. But for the most part you want .05 to 1.0 volt at idle and 4.5 to 5.0 volts at wide open throttle. It should also increase smoothly as you slowly open the throttle. If it skips and jumps around the TPS is bad.