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)

Recommended Posts

So, i returned from 10 day vacation and went to start the car. (99 996, 145000mi on odometer, 50000mi on engine) It worked perfectly fine when I left. Now, it turns over, but won't "catch". While the battery wasn't dead, per se, I did give it an overnight charge as it had been sitting for 10 days and the weather was cold. But this didn't change anything. Plenty of gas. Fuses look ok.

Any thoughts? I'm betting computer, but not sure how to prove this without a code reader. Anything i should try before calling AAA and hauling it off to the dealer?

Thanks in advance...

Ross

Link to comment
Share on other sites

  • Moderators

I would check the clutch pedal switch, the fuel pump and the ignition switch first, there are more possibility's depending on time to spend.

Link to comment
Share on other sites

I would check the clutch pedal switch, the fuel pump and the ignition switch first, there are more possibility's depending on time to spend.

The clutch pedal switch and ignition switch work fine as the car turns over just fine. If they weren't working, i'd expect to get just nothing.

The fuel pump, fuel injection, or no spark from the ignition system seem likely - but not sure how to check these without a computer reader. Is there a way to do this??

Ross

Link to comment
Share on other sites

I would check the clutch pedal switch, the fuel pump and the ignition switch first, there are more possibility's depending on time to spend.

The clutch pedal switch and ignition switch work fine as the car turns over just fine. If they weren't working, i'd expect to get just nothing.

The fuel pump, fuel injection, or no spark from the ignition system seem likely - but not sure how to check these without a computer reader. Is there a way to do this??

Ross

After some cranking (not too much, 10 seconds max then wait until trying again) go put your nose at the exhaust outlet. You should smell raw fuel. If you don't there is likely a fuel pump/delivery issue. Fuel smell present points as you mention to ignition or computer woes.

good luck

Link to comment
Share on other sites

I would check the clutch pedal switch, the fuel pump and the ignition switch first, there are more possibility's depending on time to spend.

The clutch pedal switch and ignition switch work fine as the car turns over just fine. If they weren't working, i'd expect to get just nothing.

The fuel pump, fuel injection, or no spark from the ignition system seem likely - but not sure how to check these without a computer reader. Is there a way to do this??

Ross

After some cranking (not too much, 10 seconds max then wait until trying again) go put your nose at the exhaust outlet. You should smell raw fuel. If you don't there is likely a fuel pump/delivery issue. Fuel smell present points as you mention to ignition or computer woes.

good luck

Ok, tried this. I smell gas! So it's not the fuel delivery system. Anything i can try next?

Ross

Link to comment
Share on other sites

  • Moderators

Good point about the clutch switch, the ignition switch on the contrary am not convinced, it's possible, in some cases with a faulty switch, to activate the starter motor and loosing contact with the ignition at the same time, due a defective inner switch. The DME and pump relays are also a possibility to check. You can hear the fuel pump running in the front trunk, let a helper start and put your ear on the trim behind the spare wheel.

Link to comment
Share on other sites

Good point about the clutch switch, the ignition switch on the contrary am not convinced, it's possible, in some cases with a faulty switch, to activate the starter motor and loosing contact with the ignition at the same time, due a defective inner switch. The DME and pump relays are also a possibility to check. You can hear the fuel pump running in the front trunk, let a helper start and put your ear on the trim behind the spare wheel.

Thanks. I'll do some more poking around.

Ross

Link to comment
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
×
×
  • 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.