1G Throttle Position Sensor - False information found?

[DSMRevolution]

I was reading on a website how the TPS on the 1g's should be set to .88 OHMS at idle (neutral position). Now I also found on a search and in my manual that it should read .48 - .52 OHMS. What should it actually read? I don't want to know what YOURS reads, but what the actual resistance should be. Do some people raise it up to .88 OHMS to compensate for something in a SAFC? Thanks

I had mine set previously at .88 OHMS and it was fine, but I have the TB off right now so I am going to put it back down to .50 OHMS or so.

 

[MNGSX]

I think the difference is the range of the sensor VS installed operational range.

It will read lower than .88 ohms when off the car but when installed it should be rotated to read .88 with the throttle closed and tightened down there.

If all the sensors produced had the same exact reading at the same rotation position the mounting holes would'nt be slotted.

 

[Defiant]

If it was fine, don't change it. Or, mark it so you can find it's original setting easily.

 

[steve]

Originally posted by DSMRevolution
I was reading on a website how the TPS on the 1g's should be set to .88 OHMS at idle (neutral position). Now I also found on a search and in my manual that it should read .48 - .52 OHMS.

The correct setting is actually 0.48 to 0.52 Volts not Ohms.

Because of the manufacturing differences and aging, measuring the output voltage is the only 100% accurate way to set your TPS on a 1G. Since the fuel rail makes it hard to get at the lower bolt people try to preset the TPS by measuring the resistance and that may get you close but the factory ECU is looking at the output voltage and wants 0.48 to 0.52 Volts at idle.

My TPS isn't anywhere close to any of those suggested resistances when the output voltage is correct, YMMV.

Steve

 

[DSMRevolution]

Originally posted by steve


The correct setting is actually .48 to .52 Volts not Ohms. Because of the manufacturing differences and aging measuring the output voltage is the only 100% accurate way to set your TPS. Because the fuel rail makes it hard to get at the lower bolt people try to preset the TPS by measuring the resistance and that may get you close but the ECU is looking at the output voltage and wants .48 to .52 Volts at idle. My TPS isn't anywhere close to any of the suggested resistances when the output voltage is correct, YMMV.

Steve

THANK YOU!!! That is exactually what I wanted to hear. I might make a tech article on this. I just got done setting mine to .48 OHMS. I will reset it to .48 volts.


Thanks everybody else for the suggestions and/or how to's also.