car died today, a new one on me. solved! |
|
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. |
|
car died today, a new one on me. solved! |
TheCabinetmaker |
Aug 12 2013, 06:59 PM
Post
#1
|
I drive my car everyday Group: Members Posts: 8,300 Joined: 8-May 03 From: Tulsa, Ok. Member No.: 666 |
Stopped at a red light and tach dropped to 0, and engine died. Started right back up, but wouldn't idle. Made it back to my shop by keeping the rpms up when stopped. Runsu just fine, just won't idle. Unplugged the tps and it idles fine. Plug it back in, and engine dies. Haven't got to look at it yet, wondered if anyone else has experienced this and what the cause was. 40 years, and this is a first.
|
type47 |
Aug 13 2013, 07:07 AM
Post
#2
|
Viermeister Group: Members Posts: 4,254 Joined: 7-August 03 From: Vienna, VA Member No.: 994 Region Association: MidAtlantic Region |
I had mine suddenly run really crappy, turned out to be the MPS.
|
sportlicherFahrer |
Aug 13 2013, 11:53 AM
Post
#3
|
Nothing to see here. Group: Members Posts: 1,079 Joined: 18-April 05 From: Tacoma, WA Member No.: 3,945 Region Association: Pacific Northwest |
I would try cleaning the contact plate inside the TPS and then re-adjust it. Mine has given me issues before and that seems to take care of it.
|
Tom_T |
Aug 13 2013, 11:59 AM
Post
#4
|
TMI.... Group: Members Posts: 8,318 Joined: 19-March 09 From: Orange, CA Member No.: 10,181 Region Association: Southern California |
Curt -
Someone on here in member vendors was making replacement TPS circuit boards for them, if yours looks worn at the contacts. Cheers! (IMG:style_emoticons/default/beerchug.gif) Tom /////// |
TheCabinetmaker |
Aug 13 2013, 04:33 PM
Post
#5
|
I drive my car everyday Group: Members Posts: 8,300 Joined: 8-May 03 From: Tulsa, Ok. Member No.: 666 |
I have a new board that has been adjusted. I'm just wondering what in the tps would make the car not idle. It seems a more likely cause would be the ecu not receiving a signal or not reading it correctly.
|
76-914 |
Aug 14 2013, 02:45 PM
Post
#6
|
Repeat Offender & Resident Subaru Antagonist Group: Members Posts: 13,502 Joined: 23-January 09 From: Temecula, CA Member No.: 9,964 Region Association: Southern California |
I have a new board that has been adjusted. I'm just wondering what in the tps would make the car not idle. It seems a more likely cause would be the ecu not receiving a signal or not reading it correctly. Haven't experienced this first hand Curt but read a thread where someone finally discovered the finger(s) were tweeked longitudinally. e.g. riding on their side. GL (IMG:style_emoticons/default/popcorn[1].gif) |
r_towle |
Aug 14 2013, 09:12 PM
Post
#7
|
Custom Member Group: Members Posts: 24,574 Joined: 9-January 03 From: Taxachusetts Member No.: 124 Region Association: North East States |
Let or djet?
Vacuum leak on ljet will do this...like a rack in the big tube, or the oil cap seal or print is bad. Vacuum leaks on ljet kill the motor at idle Vacuum leaks on djet or carbs make high idle |
Cap'n Krusty |
Aug 14 2013, 09:57 PM
Post
#8
|
Cap'n Krusty Group: Members Posts: 10,794 Joined: 24-June 04 From: Santa Maria, CA Member No.: 2,246 Region Association: Central California |
The car will idle and run fairly well with the TPS unplugged .....................
The Cap'n |
TheCabinetmaker |
Aug 15 2013, 06:40 PM
Post
#9
|
I drive my car everyday Group: Members Posts: 8,300 Joined: 8-May 03 From: Tulsa, Ok. Member No.: 666 |
You are correct as usual Cap'n, but you already knew that. (IMG:style_emoticons/default/biggrin.gif)
I've been working out of town this week (retirement doesn't pay very well), but I'll get back to it saturday. |
Java2570 |
Aug 17 2013, 08:10 AM
Post
#10
|
Senior Member Group: Members Posts: 649 Joined: 7-May 11 From: Fishers, IN Member No.: 13,035 Region Association: Upper MidWest |
That is a bizarre one.....maybe a break in the wiring somewhere?? Weird!
|
TheCabinetmaker |
Aug 17 2013, 10:34 AM
Post
#11
|
I drive my car everyday Group: Members Posts: 8,300 Joined: 8-May 03 From: Tulsa, Ok. Member No.: 666 |
I just got done with my yardwork this morning and headed to my shop shortly. I'll start with the tps part of the harness.
More to come. |
rmital |
Aug 17 2013, 10:56 AM
Post
#12
|
Northeast optimist Group: Members Posts: 1,947 Joined: 12-December 05 From: Park Ridge, NJ Member No.: 5,268 |
I just got done with my yardwork this morning and headed to my shop shortly. I'll start with the tps part of the harness. More to come. Curt...you wouldn't happen to have a spare know good MPS? my rebuilt one drove great, but idled badly; needed to adjust. |
TheCabinetmaker |
Aug 17 2013, 03:14 PM
Post
#13
|
I drive my car everyday Group: Members Posts: 8,300 Joined: 8-May 03 From: Tulsa, Ok. Member No.: 666 |
Got it fixed turned out to be the ecu. all is good now. |
76-914 |
Aug 18 2013, 10:32 AM
Post
#14
|
Repeat Offender & Resident Subaru Antagonist Group: Members Posts: 13,502 Joined: 23-January 09 From: Temecula, CA Member No.: 9,964 Region Association: Southern California |
File a complaint, Curt. You were cheated. These things should last more than 40 yrs. don't ya think? (IMG:style_emoticons/default/biggrin.gif)
|
rmital |
Aug 18 2013, 11:18 AM
Post
#15
|
Northeast optimist Group: Members Posts: 1,947 Joined: 12-December 05 From: Park Ridge, NJ Member No.: 5,268 |
Got it fixed turned out to be the ecu. all is good now. ...I'm very curious these days...must be all the vacation/relaxation the past week.....so have to ask; How did the problem lead you to the ECU??? do tell, what was the process?????? (IMG:style_emoticons/default/confused24.gif) |
TheCabinetmaker |
Aug 18 2013, 11:58 AM
Post
#16
|
I drive my car everyday Group: Members Posts: 8,300 Joined: 8-May 03 From: Tulsa, Ok. Member No.: 666 |
Sorry Ray, it was mostly a process of elimination. Wiring checked good, tps adjusted to 0 ohms. Using brad anders chart I checked ohms at #17 wire on the ecu plug. He called for under .5 ohms. After dismantling a tps and sanding the gold on the board, then hand polishing it with jewellers rouge, it ohmed at .2. No change. It just had to be the ecu. Since I already had the plug off, it was simple to check.
|
Lo-Fi Version | Time is now: 17th May 2024 - 09:30 AM |
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 ... |