 Fuel delivery issue, Issue solved. Thanks DD |
|
|
|
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. |
|
|
  |
| poorsche914 |
 Apr 8 2011, 08:16 PM
Post
#1
|
|
T4 Supercharged  Group: Members Posts: 3,090 Joined: 28-May 09 From: Smoky Mountains Member No.: 10,419 Region Association: South East States  |
When I originally started sorting things out with the FI system on my LE, the fuel pump had a jumper hooked to the coil to run. I removed this and the car starts and runs fine - for a few minutes. A couple times when I ran it down the road a half mile or so and then headed back, the car would hesitate and die about half way back. The first time it did this, it started up after a minute or so and I drove on home. Tonight when the same thing happened, I attached the jumper wire from the fuel pump to the coil and it started up and made it back to the house fine. I even drove it beyond the house about half a mile and back. But when I turned the key off, it kept on running. Had to pull the jumper wire to stop the pump.
Where should I begin troubleshooting this? I would rather get it working properly without the jumper wire. Thanks. (IMG:style_emoticons/default/driving.gif) |
   |
 
|
| SirAndy |
Apr 8 2011, 08:19 PM
Post
#2
|
|
Resident German Group: Admin Posts: 41,640 Joined: 21-January 03 From: Oakland, Kalifornia Member No.: 179 Region Association: Northern California |
QUOTE(poorsche914 @ Apr 8 2011, 07:16 PM)  When I originally started sorting things out with the FI system on my LE, the fuel pump had a jumper hooked to the coil to run. I removed this and the car starts and runs fine - for a few minutes. A couple times when I ran it down the road a half mile or so and then headed back, the car would hesitate and die about half way back. The first time it did this, it started up after a minute or so and I drove on home. Tonight when the same thing happened, I attached the jumper wire from the fuel pump to the coil and it started up and made it back to the house fine. I even drove it beyond the house about half a mile and back. But when I turned the key off, it kept on running. Had to pull the jumper wire to stop the pump. Where should I begin troubleshooting this? I would rather get it working properly without the jumper wire. Check the fuel pump relay on the relay board. Make sure the contacts are not corroded and make sure it fits tight. If it fits lose, you can carefully pry the prongs a bit to give it a better fit. I would also try to replace it with a other known to be good relay, like one of the headlight relays. (IMG:style_emoticons/default/bye1.gif) |
|
|
|
| poorsche914 |
Apr 8 2011, 08:43 PM
Post
#3
|
|
T4 Supercharged Group: Members Posts: 3,090 Joined: 28-May 09 From: Smoky Mountains Member No.: 10,419 Region Association: South East States |
Thank you, Andy. I should have thought of that as I replaced my old relay board with a "nicer" one that included relays. Never checked each relay, though.
(IMG:style_emoticons/default/driving.gif) |
|
|
|
| Dave_Darling |
Apr 8 2011, 09:33 PM
Post
#4
|
|
914 Idiot Group: Members Posts: 14,986 Joined: 9-January 03 From: Silicon Valley / Kailua-Kona Member No.: 121 Region Association: Northern California 
|
|
|
|
|
| poorsche914 |
Apr 8 2011, 09:52 PM
Post
#5
|
|
T4 Supercharged Group: Members Posts: 3,090 Joined: 28-May 09 From: Smoky Mountains Member No.: 10,419 Region Association: South East States |
|
|
|
|
| poorsche914 |
Apr 10 2011, 05:05 PM
Post
#6
|
|
T4 Supercharged Group: Members Posts: 3,090 Joined: 28-May 09 From: Smoky Mountains Member No.: 10,419 Region Association: South East States |
QUOTE(Dave_Darling @ Apr 8 2011, 11:33 PM) There's a fuel pump flowchart on Brad Anders' D-jet page. http://members.rennlist.com/pbanders --DD Flowchart was just what I needed. Came up with a faulty wire in the harness. I nabbed a like-new Bowlsby rebuilt harness from a seller here (IMG:style_emoticons/default/piratenanner.gif) Should have it around mid week or so. (IMG:style_emoticons/default/driving.gif) |
|
|
|
|
1 User(s) are reading this topic (1 Guests and 0 Anonymous Users)
0 Members:
|
Lo-Fi Version | Time is now: 17th May 2024 - 06:52 AM |
Invision Power Board
v9.1.4 © 2024 IPS, Inc.