2.0 FI quit on me again today, %^$#**&^^ 3rd time |
|
Porsche, and the Porsche crest are registered trademarks of Dr. Ing. h.c. F. Porsche AG.
This site is not affiliated with Porsche in any way. Its only purpose is to provide an online forum for car enthusiasts. All other trademarks are property of their respective owners. |
|
2.0 FI quit on me again today, %^$#**&^^ 3rd time |
Howard |
Feb 9 2006, 08:14 PM
Post
#1
|
Incontin(g)ent Member Group: Benefactors Posts: 5,785 Joined: 24-July 03 From: Westlake Village, CA Member No.: 943 Region Association: None |
OK. Slits and I went over this, but more opinions couldn't hurt.
Symptom: Fuel pump quits after running for an hour or so. Pump is not hot to the touch. Let car sit for half hour, runs fine. Last time it crapped out and cooled off, I went to start it and relay fried. Replaced relay and it ran. As I understand it, the things that affect the pump operation are: Fuse 9 Relay and board FI brain Ron is sending me another relay board and brain to try. Anything else it could be? |
SLITS |
Feb 9 2006, 11:29 PM
Post
#2
|
"This Utah shit is HARSH!" Group: Benefactors Posts: 13,602 Joined: 22-February 04 From: SoCal Mountains ... Member No.: 1,696 Region Association: None |
What he didn't tell you is that he found 2 of the four relays on the RB fried. He also didn't comment on the sound the relay makes when the engine won't start.
While I agree with the AMP guage inline with the pump, the thought was that the RB could be seeing intermittent contact with power to the relay coil...making a chattering sound as it just doesn't have the power to pull in. This could be the traces coming loose or exhibiting high resistance that supply the power to the coil when the board heats up due to current flow. Easy to change the RB to see if it "cures" the problem. With the cost of a fuel pump at $400...it's worth investigating. Also, in that circuit is the brain that controls the fuel pump on start. If it were experiencing a "heat" problem in the logic board, maybe it's cutting off the fuel too. I still think that a CHT change might be in order. It to, could be intermittent. Just a guessing game.......... |
Lo-Fi Version | Time is now: 29th May 2024 - 02:23 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 ... |