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Location:
Sydney
Registered:
May 2004
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Do I NEED a TPS?
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Tue, 24 August 2004 06:48
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Hey just wondering if i need a throttle position sensor. I currently don't have one on the car at the moment and it seems to be running ok. It doesn't have a afm either but probably has a map sensor. Why do cars have a TPS?
p.s I'm using an aftermarket computer.
Does it mean it will run a tad lean when accelerating and a tad rich when decelerating? (i'm really just guessing here fellas)
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Location:
Sydney
Registered:
May 2004
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Re: Do I NEED a TPS?
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Tue, 24 August 2004 06:52
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forgot to meantion that i've also got a crank angle sensor but i'm assuming thats just used for the ignition side of things???
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Location:
Terrigal
Registered:
May 2002
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Re: Do I NEED a TPS?
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Tue, 24 August 2004 07:08
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What kind of ECU are you running?
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Registered:
March 2003
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Re: Do I NEED a TPS?
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Tue, 24 August 2004 07:08
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My MicroTech uses a Throttle Position Sensor, along with Crank Angle Sensor, Water Temp Sensor, RPM, volts, air temp sensors.
So I would say, yes it does need it.
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Location:
Sydney
Registered:
May 2004
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Re: Do I NEED a TPS?
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Tue, 24 August 2004 07:15
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ems dual sport
i know the computer has an input for it.. its just that my engine doesn't have one fitted and therefore its not connected up to the computer!
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Location:
Sydney
Registered:
June 2004
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Re: Do I NEED a TPS?
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Tue, 24 August 2004 07:18
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my 3TGTE doesnt have one either and im using haltech F9, do i need one?
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Location:
sydney
Registered:
July 2004
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Re: Do I NEED a TPS?
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Tue, 24 August 2004 08:27
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my car has a tps but it is stuffed as i get error light on mircotech come on when decelerating, what u said is true about running rich when slowing but it also runs lean when cold and idling
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Location:
Hobart
Registered:
June 2002
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Re: Do I NEED a TPS?
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Tue, 24 August 2004 09:53
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i think tps will be used for acceleration enrichment, ie when you jump on the throttle the computer will richen the mixture. just like accel. pump in a carby. It also leans the mixture when decellerating. whether you can can run without one probably depend on how nice you want your engine to run, and maybe depends on how your computer works.
it may also be used to detect a high proportion of throttle to go into open-loop mode (ie. not using the o2 sensor to correct mixtures, just run straight from fuel map in computer).
cheers
Chris
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