 Intermittant Bucking, like fuel is cut off for an instant |
|
|
|
Porsche, and the Porsche crest are registered trademarks of Dr. Ing. h.c. F. Porsche AG.
This site is not affiliated with Porsche in any way. Its only purpose is to provide an online forum for car enthusiasts. All other trademarks are property of their respective owners. |
|
|
| Bruce Allert |
 Jul 26 2004, 08:22 AM
Post
#1
|
|
Hellions asleep  Group: Members Posts: 3,289 Joined: 19-March 03 From: Eagle Creek, Orygun Member No.: 441 Region Association: Pacific Northwest  |
isn't that the Throttle Position Switch that does that or is it the Injector Points? I also ohmed the Cylinder Head Temp sensor while it was cold & got 3 ohms. Does it need to be disconnected from the ECU wiring before ohming? I did on the cold test but not on the hot. The hot reading (while still connected) was somewhere btwn 1 & 2K. It's supposed to be 3K.
I could not find any vacuum leaks but idle will not go below 1K. I'm getting ....... (IMG:style_emoticons/default/headbang.gif) (IMG:style_emoticons/default/chair.gif) ready to do sumpin drastic (IMG:style_emoticons/default/fighting19.gif) (IMG:style_emoticons/default/sawzall-smiley.gif) ..........b |
   |
 
|
  |
Replies
| anthony |
Jul 26 2004, 08:45 AM
Post
#2
|
|
2270 club Group: Benefactors Posts: 3,107 Joined: 1-February 03 From: SF Bay Area, CA Member No.: 218  |
That is definitely the symptom of a bad TPS. With the TPS it happens at steady state driving at the same rpms. The contacts are worn around those rpms. On my car it happens around 3500 rpms which happens to be the freeway crusing rpm. I've needed to replace it for a long time but it only happens occasionally so I haven't been that motivated.
|
|
|
|
Posts in this topic
Bruce Allert Intermittant Bucking Jul 26 2004, 08:22 AM
davep With standard D-jet injection the trigger points i... Jul 26 2004, 08:35 AM Bruce Allert <... Jul 26 2004, 09:14 AM balthazar there is a way to modify the 1.7mps to work on the... Jul 26 2004, 05:29 PM Bruce Allert I was studying my 1.7 TPS and could see how to mod... Jul 26 2004, 05:56 PM georgia914 Hey my car does that too... only @about 4000. and... Jul 28 2004, 10:59 AM
ClayPerrine |
1 User(s) are reading this topic (1 Guests and 0 Anonymous Users)
0 Members:
|
Lo-Fi Version | Time is now: 11th May 2025 - 04:42 AM |
Invision Power Board
v9.1.4 © 2025 IPS, Inc.
| All rights reserved 914World.com © since 2002 |
|
914World.com is the fastest growing online 914 community! We have it all, classifieds, events, forums, vendors, parts, autocross, racing, technical articles, events calendar, newsletter, restoration, gallery, archives, history and more for your Porsche 914 ... |