Home  |  Forums  |  914 Info  |  Blogs
 
914World.com - The fastest growing online 914 community!
 
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.
 

Welcome Guest ( Log In | Register )

> Engine starts. Dies when warm., !st time running in a few years.
Crash207
post May 31 2011, 10:21 PM
Post #1


Newbie
*

Group: Members
Posts: 17
Joined: 23-May 11
From: United States
Member No.: 13,108
Region Association: Rocky Mountains



Hi guys.

Started engine 1st time in years. Fired right up. ran for a few mins and died, sat for a few mins and started up again. Fuel pump runs constantly, added 2nd inline fuel filter just to be safe. fuel lines are new, everything else is old. any ideas where to start?

Thanks in advance.

M@
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
 
Reply to this topicStart new topic
Replies
swl
post Jun 12 2011, 06:30 AM
Post #2


Senior Member
***

Group: Members
Posts: 1,409
Joined: 7-August 05
From: Kingston,On,Canada
Member No.: 4,550
Region Association: Canada



Fuel pump running continuously is a sign that someone has 'fixed' a relay board problem by tying into another power source (frequently the ignition). You should have a look to see what they've done.

Not likely this is a fuel pump issue - is it still running after the car dies?

'ignition trigger' is it possible you are reading about the 'trigger points'. Located at the bottom of the distributor - rear side. Trigger points tell the ECU when to fire the fuel injectors. I've never heard of them failing hot and running cold. Other than some creative prototypes there is no substitute for the trigger points.

The fella's above have the most likely solution. The AAR is designed to add air (and thus RPM) when the engine is cold. A heater coil activates a thermostat (bimetalic - like a toaster) that shuts off this air flow as the car warms up. You should hear your revs dropping through that process.

The CHT is the equivalent of a choke. Rich when cold, lean when hot. It does this by adjusting the length of the fuel injector base pulse.

Can you describe (or record) what it sounds like as the engine dies.

"fuel lines new - everything else old". If you are running original vacuum lines replace them. So many D-Jet problems can be traced back to leaking vacuum lines. Not likely this is your current problem - but it will be a problem sooner or later.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post

Posts in this topic


Reply to this topicStart new topic
1 User(s) are reading this topic (1 Guests and 0 Anonymous Users)
0 Members:

 



- Lo-Fi Version Time is now: 15th July 2025 - 02:54 AM