TPS setting problem 87vet
Thread Starter
Racer
Joined: Sep 2011
Posts: 400
Likes: 5
From: Bakersfield Ca
TPS setting problem 87vet
Using a new multimeter and test tool from mid America best reading throttle closed I could get was .01.no change when throttle open. what volts should be from the connector wire unplugged from the sensor. .01 is what I get on black top the bottom connector reads 5.01 Are my settings on meter correct
is the plug bad . I have an extra plug. When I have time tomorrow I will connect Datamaster and check that way
is the plug bad . I have an extra plug. When I have time tomorrow I will connect Datamaster and check that way
Race Director
Joined: Apr 2002
Posts: 10,036
Likes: 346
From: Anaheim CA
The ECM supplies a 5 volt reference voltage on the blue wire. The black wire is ground, which also comes from the ECM. Put one probe on the black wire and the other on the red wire. Don't use some random metal part of the engine as ground reference because there is not a good connection between the engine and the ECM.
The polarity of the probes does not matter -- the important thing is the number. The meter will read minus if the probes are backwards, but that isn't important. As I like to say, the electrons don't care what color the insulation is.
Datamaster will tell you what the ECM is seeing. That's the important thing.
The polarity of the probes does not matter -- the important thing is the number. The meter will read minus if the probes are backwards, but that isn't important. As I like to say, the electrons don't care what color the insulation is.
Datamaster will tell you what the ECM is seeing. That's the important thing.
Thread Starter
Racer
Joined: Sep 2011
Posts: 400
Likes: 5
From: Bakersfield Ca
The ECM supplies a 5 volt reference voltage on the blue wire. The black wire is ground, which also comes from the ECM. Put one probe on the black wire and the other on the red wire. Don't use some random metal part of the engine as ground reference because there is not a good connection between the engine and the ECM.
The polarity of the probes does not matter -- the important thing is the number. The meter will read minus if the probes are backwards, but that isn't important. As I like to say, the electrons don't care what color the insulation is.
Datamaster will tell you what the ECM is seeing. That's the important thing.
The polarity of the probes does not matter -- the important thing is the number. The meter will read minus if the probes are backwards, but that isn't important. As I like to say, the electrons don't care what color the insulation is.
Datamaster will tell you what the ECM is seeing. That's the important thing.
Data master tomorrow
Last edited by AJ123; Oct 18, 2014 at 01:50 AM.
Thread Starter
Racer
Joined: Sep 2011
Posts: 400
Likes: 5
From: Bakersfield Ca
http://www.enduringautomotive.com/tps/
Using this link I feel the wires are ok. After breakfast I will try datamaster to see what the computer sees
Le Mans Master
Joined: Mar 2004
Posts: 5,107
Likes: 171
From: Dublin CA
The the Mid America adapter you do know that this gets plugged into the weatherpak on BOTH SIDES. It is like putting a 4" extension between two 12 inch extensions. Looking at one of your pictures, it is not plugged into the HOT end of the weatherpak....therefore your not getting any electricity to the TPS.
This has to be plugged in and the key turned to the ON position (car not running).
This has to be plugged in and the key turned to the ON position (car not running).
Thread Starter
Racer
Joined: Sep 2011
Posts: 400
Likes: 5
From: Bakersfield Ca
The the Mid America adapter you do know that this gets plugged into the weatherpak on BOTH SIDES. It is like putting a 4" extension between two 12 inch extensions. Looking at one of your pictures, it is not plugged into the HOT end of the weatherpak....therefore your not getting any electricity to the TPS.
This has to be plugged in and the key turned to the ON position (car not running).
This has to be plugged in and the key turned to the ON position (car not running).
Thread Starter
Racer
Joined: Sep 2011
Posts: 400
Likes: 5
From: Bakersfield Ca
Le Mans Master
Joined: Aug 2007
Posts: 8,735
Likes: 413
From: WV
Electrical isn't my strong point , but if you have the 5 volt reference signal (Blue Wire) going into the TPS and your getting a reading of "0" out ,wouldn't that mean the TPS is bad.???....WW
Last edited by WW7; Oct 18, 2014 at 04:56 PM.
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Thread Starter
Racer
Joined: Sep 2011
Posts: 400
Likes: 5
From: Bakersfield Ca
Thread Starter
Racer
Joined: Sep 2011
Posts: 400
Likes: 5
From: Bakersfield Ca