1997 Volkswagen Jetta THROTTLE POTENTIOMETER TEST

Tiny
MATADERO75
  • MEMBER
  • 1997 VOLKSWAGEN JETTA
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 90,000 MILES
I HAVE A JETTA 3 1997 2.0lt automatic trasn AND I WANT TO KNOW TO DO POTENTIOMETER TEST WHIT A OHMMETER.
Monday, December 15th, 2008 AT 11:20 AM

9 Replies

Tiny
RACEFAN966
  • MECHANIC
  • 5,029 POSTS
First unplug the 8 pin connector from the module.
Connect you multi meter to pin 3 and pin 7 turn on the key and read the voltage. It should be 9 to 14 volts. If that is ok the turn the key off and connect between pin 4 and pin 7 and read the voltage with the key off. Should be between 4 to 6 volts. Here is a pic of the connector and let me know what you find. Thanks


https://www.2carpros.com/forum/automotive_pictures/249564_connector_1.jpg

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Monday, December 15th, 2008 AT 4:49 PM
Tiny
MATADERO75
  • MEMBER
  • 5 POSTS
THE INFORMATION IS GOOD. BUT I NEED KNOW, HOW I TESTING THE POTENTIOMETER IN THE THROTTLE BODY WITH A OHMMETER. THANKS
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Tuesday, December 16th, 2008 AT 12:45 PM
Tiny
RACEFAN966
  • MECHANIC
  • 5,029 POSTS
I am not finding a throttle potentiometer I am showing a throttle cable, unless you are meaning TPS (throttle position sensor). So this is why I am giving you this test as this is the only divice that I can find that is why I am giving you the throttle valve module test. Buy the way what model of Jetta and which engine is it gas or diesel?
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Wednesday, December 17th, 2008 AT 10:19 AM
Tiny
MATADERO75
  • MEMBER
  • 5 POSTS
You are correct, I need testing the throttle position sensor, this sensor is part of the throttle body, I will have to change completely the throttle body and this part is it expencive. Thanks for all
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Wednesday, December 17th, 2008 AT 12:43 PM
Tiny
RACEFAN966
  • MECHANIC
  • 5,029 POSTS
Ok now we understand each other. How many wire sensor is yours as they are showing more then one. They are showing that the only way to properly test it is with a scanner too. Get back to me and we will see what we can do.
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Thursday, December 18th, 2008 AT 10:38 AM
Tiny
MATADERO75
  • MEMBER
  • 5 POSTS
WHIT REFERENCE TO ANTERIOR INFORMATION, I CONNECT MY MULTIMETER BETWEEN PIN 4 AND PIN 7 WITH THE KEY OFF, AND READ 0 VOLTS, INSTEAD WITH THE KEY ON READ 5 VOLTS. IN THE INFORMATION THAT YOU SEND ME WITH THE KEY OFF SUPPOSE TO READ 5 VOLTS. WHAT YOU THINK ABOUT THAT.
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Thursday, December 18th, 2008 AT 12:24 PM
Tiny
RACEFAN966
  • MECHANIC
  • 5,029 POSTS
Sorry my bad wrote it down wrong your reading is as it should be. Now it gets in more then we can do ourselves as it requires a VAG1598/18 test box to test the ECM wiring. If you have this tester let me know and I walk you through it. Thanks and let me know what you would like to do from here.
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Friday, December 19th, 2008 AT 10:31 AM
Tiny
MATADERO75
  • MEMBER
  • 5 POSTS
I DON 'T HAVE THAT TESTER, I THINK THAT THE PROBLEM IS THE THROTTLE BODY.
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Friday, December 19th, 2008 AT 3:57 PM
Tiny
RACEFAN966
  • MECHANIC
  • 5,029 POSTS
WIthout doing this test you will not know for sure you will be guessing and hoping. So you either need to just replace it and hope it fixes it, or call around and see what a shop might charge to do the test for you. Thanks.
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Saturday, December 20th, 2008 AT 8:59 AM

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