TPS voltage problem with AEM EMS - 3000GT/Stealth International Message Center

Speedzter · 05-13-2008, 11:19 AM

I've had this issue ever since upgrading to AEM EMS.
0% throttle = 0,04v
100% throttle = 0,21v
According to the AEM. This also means the Throttle% value is impossible to use when tuning because the value isnt stable.. I tried different firmwares and settings, but the problem remains..

I'm starting to think my TPS might be bad, but the car worked fine before upgrading to AEM EMS.

Anyone had this problem with their AEM or knows how to fix it?

HEEEEELPP!

Kaddo · 05-13-2008, 11:37 AM

Check the voltage at the sensor itself via a multimeter. Make sure it is a sensor issue and not a wiring issue.

Speedzter · 05-13-2008, 11:56 AM

I did.
The sensor-ground was working but the sensors power-supply did not seem to work.. it showed no reaction on my multimeter atleast. This would explain the problem, but I was told that it could be the software-settings in the AEM that restrics the power-supply..

I will check again tomorrow to confirm that it is in fact not getting any power.

Thanks for the help so far

streamlnauto · 05-13-2008, 05:08 PM

that voltage does not sound correct, at 100% it should be close to +5v

Speedzter · 05-13-2008, 05:34 PM

Quote:

Originally Posted by streamlnauto

that voltage does not sound correct, at 100% it should be close to +5v

That is my problem, yes.

streamlnauto · 05-16-2008, 12:40 AM

if you can figure out which wire is supposed to get power and hook that directly up to +12V ignition, see if that clears it up

MustGoFaster · 05-16-2008, 05:23 AM

Quote:

Originally Posted by streamlnauto

if you can figure out which wire is supposed to get power and hook that directly up to +12V ignition, see if that clears it up

Bad idea. TPS sensor is run off 5 volts.

Steelythefez · 05-16-2008, 11:58 AM

Did you check the rest of the 5v outputs from the aem?

05-13-2008, 11:19 AM	#1 (permalink)
Speedzter New User - Please be kind Join Date: Oct 2005 Trader Rating: (0)	TPS voltage problem with AEM EMS I've had this issue ever since upgrading to AEM EMS. 0% throttle = 0,04v 100% throttle = 0,21v According to the AEM. This also means the Throttle% value is impossible to use when tuning because the value isnt stable.. I tried different firmwares and settings, but the problem remains.. I'm starting to think my TPS might be bad, but the car worked fine before upgrading to AEM EMS. Anyone had this problem with their AEM or knows how to fix it? HEEEEELPP!

05-13-2008, 11:56 AM	#3 (permalink)
Speedzter New User - Please be kind Join Date: Oct 2005 Trader Rating: (0)	Re: TPS voltage problem with AEM EMS I did. The sensor-ground was working but the sensors power-supply did not seem to work.. it showed no reaction on my multimeter atleast. This would explain the problem, but I was told that it could be the software-settings in the AEM that restrics the power-supply.. I will check again tomorrow to confirm that it is in fact not getting any power. Thanks for the help so far

05-13-2008, 05:08 PM	#4 (permalink)
streamlnauto Forum Member Join Date: May 2007 Trader Rating: (1)	Re: TPS voltage problem with AEM EMS that voltage does not sound correct, at 100% it should be close to +5v

05-16-2008, 12:40 AM	#6 (permalink)
streamlnauto Forum Member Join Date: May 2007 Trader Rating: (1)	Re: TPS voltage problem with AEM EMS if you can figure out which wire is supposed to get power and hook that directly up to +12V ignition, see if that clears it up

05-16-2008, 11:58 AM	#8 (permalink)
Steelythefez Masshole Join Date: Oct 2000 Location: Framingham, MA Trader Rating: (19)	Re: TPS voltage problem with AEM EMS Did you check the rest of the 5v outputs from the aem? __________________ 94 vr4

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