Jump to content

Welcome to RennTech.org Community, Guest

There are many great features available to you once you register at RennTech.org
You are free to view posts here, but you must log in to reply to existing posts, or to start your own new topic. Like most online communities, there are costs involved to maintain a site like this - so we encourage our members to donate. All donations go to the costs operating and maintaining this site. We prefer that guests take part in our community and we offer a lot in return to those willing to join our corner of the Porsche world. This site is 99 percent member supported (less than 1 percent comes from advertising) - so please consider an annual donation to keep this site running.

Here are some of the features available - once you register at RennTech.org

  • View Classified Ads
  • DIY Tutorials
  • Porsche TSB Listings (limited)
  • VIN Decoder
  • Special Offers
  • OBD II P-Codes
  • Paint Codes
  • Registry
  • Videos System
  • View Reviews
  • and get rid of this welcome message

It takes just a few minutes to register, and it's FREE

Contributing Members also get these additional benefits:
(you become a Contributing Member by donating money to the operation of this site)

  • No ads - advertisements are removed
  • Access the Contributors Only Forum
  • Contributing Members Only Downloads
  • Send attachments with PMs
  • All image/file storage limits are substantially increased for all Contributing Members
  • Option Codes Lookup
  • VIN Option Lookups (limited)
bdodd444

87 Porsche 944 No Fuel Pressure After start

Recommended Posts

I posted a while back about my 87 944 not starting. I finally towed it in, and after about $800 in tune up, draining old fuel and both Crank Position Reference Sensors. The mechanic says the car will turn over but once the key is released it loses fuel pressure and won't continue running. He says he is stumped and it will be 6 hours of labor at least to figure out what is going on. He says the fuel pressure is fine for starting but there is none for running. He says there are two different signals sent to the fuel pump. I believe I have all of this right. If anyone has any ideas, I would appreciate it. I'm pretty close to donating the car, but would be willing to try one more thing.

Edited by bdodd444

Share this post


Link to post
Share on other sites
    You can remove these ads by becoming a Contributing Member.

Best advice I can give is find another mechanic. The fuel pump relay needs to see a engine speed signal to energize as well as a crank signal. It sounds like your missing the speed signal.

Share this post


Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.


×
×
  • Create New...

Important Information

We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue.