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Old 06-06-2018, 12:39 AM   #21  
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Quote:
Originally Posted by Savington View Post
On the NA6, it's a little different because on the manual cars there is no 5v reference at the TPS connector. You need to add it yourself or have an ECU which passes 5v up one of the existing wires (such as an MSLabs MS3 Basic) and then wire the new NB connector properly.

On the NA8, it's as simple as changing the pigtail, since 5v is already there by default (and thus every aftermarket ECU worth owning also sends 5v there).
OK so I run a wire into the optionsport 23 on the MS2 & attache it to 1 of the 2 non powered wires.

am I getting warm?
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Old 06-06-2018, 01:05 AM   #22  
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Something like that. I don't sell/support MS2s so I don't know for sure.
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Old 06-06-2018, 02:48 AM   #23  
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actually it turns out. On the MS PnP2
step 1. I enable J5 (that's the jumper for vTPS inside the ECU). which then sends that signal you talk about through red. ( thats with the NA6 harness manual version)
step 2 I just connect the 3 wires from the NA6 man. harness to the NB vTPS (NB8A 99)
step 3 check & calibrate TPS through tuner studios

the thing which confused the hell out of me is the connector form the NB
I don't have one of those I just have a new one with a pig tail

in the case of he NA6 Manual version when looking at the TPS
top or TPS signal is Green white wire
middle is ground Black/ Green wire
bottom is 5v Ref red

will report back when it stops raining & confirm
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Old 06-09-2018, 01:55 AM   #24  
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That worked

TPS is varying like a trooper
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Old 06-13-2018, 11:29 AM   #25  
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Stan, I have the same issue- '99 TPS with an aftermarket plug and no color referenced wires. I'm attaching it to a '95, 4 wire harness and I can't find a straight answer to the pinning on the '99 TPS which is frustrating as @#$% considering the number of these that have been done.

So what I uderstand from your post is that when looking at it, the top pin is the feed (light green/white), the middle is the ground (black/blue on mine), and the bottom is the 5v source (red/black on mine). Is this correct? As I understand it, the 4th red wire on my harness is not used since it performs some other function that is not needed (cuts A.C. at WOT or something to that effect).
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Old 06-13-2018, 11:44 AM   #26  
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Quote:
Originally Posted by DrKarrot View Post
Straight outta the Google box:

If you're not sure which connection on your TPS goes to which wire, check it with an ohmmeter/multimeter. Observe the resistance as the throttle opens and closes. Each pair of pins will behave differently:
  • The resistance between the 5 volt and ground pins will remain constant.
  • The resistance between the ground and signal pins will be low with the throttle closed and high with the throttle wide open.
  • The resistance between the 5 volt and signal pins will be high with the throttle closed and low with the throttle wide open.
If you know to exclude that fourth red wire you mentioned, there are only 6 possible wire combinations. Should not be frustrating.
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Old 06-13-2018, 12:33 PM   #27  
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Quote:
Originally Posted by DrKarrot View Post
If you know to exclude that fourth red wire you mentioned, there are only 6 possible wire combinations. Should not be frustrating.
Yes, 6 combinations, but that's 5 more than what I'm looking for. So everyone has to go through the same *** pain every time someone does this? Why have a forum at all if self-discovery is the expectation for something that should be common knowledge at this point? That is what's frustrating.

Last edited by RocketJock; 06-13-2018 at 02:17 PM.
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Old 06-13-2018, 12:45 PM   #28  
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Quote:
Originally Posted by RocketJock View Post
3 pins, 3 wires, 9 combinations, but who's counting. So everyone has to go through the same *** pain every time someone does this? Why have a forum at all if self-discovery is the expectation for something that should be common knowledge at this point? That is what's frustrating.
Sorry bud, but its called "without replacement," you may have wanted to pay slightly closer attention in 8th grade probability. 3!=3*2*1 = 6

And yes, since doing this should take you maybe 45 seconds with a multimeter, it does not fall into the "pain in the ***" category. There are many different TPS sensors. This is one of those classic "teach a man to fish" moments for you.
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Old 06-13-2018, 01:04 PM   #29  
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Use a DMM
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Old 06-13-2018, 01:29 PM   #30  
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90 chassis 99 engine aftermarket pigtail + the evil hydra supplying the 5v

Last edited by Robin-42; 06-14-2018 at 05:24 AM. Reason: just to be clear
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Old 06-13-2018, 01:47 PM   #31  
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Yes, without replacement. Thanks for clarifying the one useless point of this conversation.

Thanks Robin-42, I really appreciate a simple answer for a simple question. Hopefully the next 20 people that are trying to figure this out will find your picture and benefit from it!
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