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Gen 2 TPS voltage range

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Gen 2 TPS voltage range
Old September 5th, 2005, 10:18 AM   #1
 
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Gen 2 TPS voltage range

Just trying to verify TPS for proper function. On the Gen 2 I am working on I get a closed reading of .81 vdc and a WOT reading of 3.92 vdc. There is just enough play to eek out a WOT reading to 4.08 vdc. I've had a couple guys here say I should be getting WOT readings > 4.4, more like 4.8vdc. But here's an excerpt straight from AllData:
"The fuel injection system uses only one Throttle Position Sensor (TPS). The TPS is a variable resistor that provides the PCM with an input signal (voltage). The signal represents throttle blade position. As the position of the throttle blade changes, the resistance of the TPS changes. The PCM supplies approximately 5 volts to the TPS. The TPS output voltage (input signal to the PCM) represents throttle blade position. The TPS output voltage to the PCM varies from approximately 0.5 volt at minimum throttle opening (idle) to 3.5 volts at wide open throttle."

Anyone out there can verify any of this data?
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Re: Gen 2 TPS voltage range
Old September 5th, 2005, 11:31 AM   #2
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Re: Gen 2 TPS voltage range

1997 GTS Shop manual says:

"The PCM supplies approximately 5 volts to the TPS. The TPS output voltage (input signal to the PCM) represents throttle blade position. The TPS output voltage to the CM varies from approximately 0.5 volt at minimum throttle opening (idle) to 3.5 volts at wide open throttle."

so, you had the correct info.
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Re: Gen 2 TPS voltage range
Old September 5th, 2005, 01:45 PM   #3
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Re: Gen 2 TPS voltage range

Hey Bro, how was the trip out to the Ocean this past weekend? I made a post in the " Anything goes " section of the get together if you want to check it out. We are going to do it again before the rains come.
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Re: Gen 2 TPS voltage range
Old September 5th, 2005, 11:17 PM   #4
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Re: Gen 2 TPS voltage range

I have a logger in my 97 and it is 3.85 volts at WOT and .75 volts at idle.
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Re: Gen 2 TPS voltage range
Old September 6th, 2005, 11:20 AM   #5
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Re: Gen 2 TPS voltage range

Robert,
Sorry, I gave you bum info in the other post. I mistyped, when I said 4.4V, I actually meant 3.4V. 3.5V is pretty borderline in my opinion. One thing that I found with my setup is that the throttle plates weren't opening fully. I had to redrill my throttle bracket and move it back about 1/4" to get the throttle plates to open fully and get my TPS voltage up.

--- Ken
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