Check engine light... no warnings - Rennlist Discussion Forums

Log In 


Check engine light... no warnings

Reply
 
Thread Tools Search this Thread
Old 05-22-2009, 12:25 AM   #1
Dennis C
Rocky Mountain High
Rennlist Member
Thread Starter
 
Dennis C's Avatar
 
Join Date: Aug 2007
Location: Evergreen, Colorado
Posts: 11,289
Default Check engine light... no warnings

Well, the CEL came on today. No warning. Nothing unusual, car running fine. Not sure what to make of it. I dropped it off at the dealer this afternoon.

Hopefully it won't be anything major. This is my first trip to the dealer since my factory warranty expired. I do have an extended warranty, and I was happy to see that the dealer pulled it up in their computer and is prepared to use it if necessary.

I've got my fingers crossed that it is nothing major. I'm wondering if it is coils. Mine are still the originals at roughly 52,000 miles. The car sometimes idles a little rough, but that's about it.

We'll see!
Dennis C is offline   Reply With Quote
Old 05-22-2009, 01:06 AM   #2
ltc
Super Moderator
Needs More Cowbell

Lifetime Rennlist
Member
 
Join Date: Mar 2002
Posts: 29,320
Default

gas cap?
ltc is offline   Reply With Quote
Old 05-22-2009, 02:26 AM   #3
bigbuzuki
User
 
bigbuzuki's Avatar
 
Join Date: Feb 2009
Location: Australia
Posts: 560
Default

bigbuzuki is offline   Reply With Quote
Old 05-22-2009, 08:13 AM   #4
Dennis C
Rocky Mountain High
Rennlist Member
Thread Starter
 
Dennis C's Avatar
 
Join Date: Aug 2007
Location: Evergreen, Colorado
Posts: 11,289
Default

I didn't think about the gas cap. My wife has been using the Cayenne as her daily driver since I bought the 911. It's certainly a possibility. I'll feel quite foolish if that's all it is... but it won't be the first time (or the last time) I've felt foolish.
Dennis C is offline   Reply With Quote
Old 05-22-2009, 09:50 AM   #5
Dennis C
Rocky Mountain High
Rennlist Member
Thread Starter
 
Dennis C's Avatar
 
Join Date: Aug 2007
Location: Evergreen, Colorado
Posts: 11,289
Default

Quote:
Originally Posted by ltc View Post
gas cap?
Just heard from the dealer. There were two codes in the system. One was... yes... the gas cap.

The second one was a cam adjuster fault. According to the tech, this can happen when the oil gets a little dirty and/or starts to break down, usually when an oil change is needed. The oil change light has not yet come on for this vehicle, I was planning to have it changed at the 60K mile service. Looks like I'm getting it changed today!

Should be ready this afternoon.
Dennis C is offline   Reply With Quote
Old 05-22-2009, 09:59 AM   #6
OCNYPORSCHE
Addict
Rennlist Member
 
OCNYPORSCHE's Avatar
 
Join Date: Jan 2008
Posts: 590
Default

Most likely Cayenne withdrawal Too much 996.
OCNYPORSCHE is offline   Reply With Quote
Old 05-22-2009, 10:02 AM   #7
Dennis C
Rocky Mountain High
Rennlist Member
Thread Starter
 
Dennis C's Avatar
 
Join Date: Aug 2007
Location: Evergreen, Colorado
Posts: 11,289
Default

I'm sure that's it!

I'm actually changing the oil myself on the 996 this weekend. I haven't worked on it yet, so I'm looking forward to that.
Dennis C is offline   Reply With Quote
Old 05-22-2009, 10:23 AM   #8
OCNYPORSCHE
Addict
Rennlist Member
 
OCNYPORSCHE's Avatar
 
Join Date: Jan 2008
Posts: 590
Default

Quote:
Originally Posted by Dennis C View Post
I'm sure that's it!

I'm actually changing the oil myself on the 996 this weekend. I haven't worked on it yet, so I'm looking forward to that.
It is alot easier. There is no stupid plastic cover with 18 screws to remove. That plastic cover on the Cayenne takes all the time. I even changed the 996 oil without jacking or driving it onto 2x12s. It is possible.
OCNYPORSCHE is offline   Reply With Quote
Old 05-22-2009, 11:19 AM   #9
ltc
Super Moderator
Needs More Cowbell

Lifetime Rennlist
Member
 
Join Date: Mar 2002
Posts: 29,320
Default

Quote:
Originally Posted by Dennis C View Post
Just heard from the dealer. There were two codes in the system. One was... yes... the gas cap..
Larry taught me well.
ltc is offline   Reply With Quote
Old 05-22-2009, 11:36 AM   #10
Dennis C
Rocky Mountain High
Rennlist Member
Thread Starter
 
Dennis C's Avatar
 
Join Date: Aug 2007
Location: Evergreen, Colorado
Posts: 11,289
Default

Quote:
Originally Posted by ltc View Post
Larry taught me well.
I never doubted you...

I've had a discussion with Mrs. C this morning about the need to properly tighten the gas cap. I'm not sure if she really listened, or if she thinks I'm full of crap. Doesn't matter much either way, I suppose.
Dennis C is offline   Reply With Quote
Old 05-22-2009, 11:41 AM   #11
ltc
Super Moderator
Needs More Cowbell

Lifetime Rennlist
Member
 
Join Date: Mar 2002
Posts: 29,320
Default

It may actually be a failing seal on the gas cap, not improper tightening/installation after refueling.
ltc is offline   Reply With Quote
Old 05-22-2009, 01:08 PM   #12
Dennis C
Rocky Mountain High
Rennlist Member
Thread Starter
 
Dennis C's Avatar
 
Join Date: Aug 2007
Location: Evergreen, Colorado
Posts: 11,289
Default

Possibly... we'll see if it happens again.
Dennis C is offline   Reply With Quote
Old 05-23-2009, 02:36 AM   #13
porsche52
Board Certified Porsche Trauma Surgeon
Cayenne Grief Counselor
Rennlist Member
 
porsche52's Avatar
 
Join Date: Dec 2008
Location: Mile High
Posts: 280
Default

If you are 100% shure the gas cap is tight, and the system passes a short test (via PIWIS) I would suggest installing a new tank vent valve, they can get debri in them and cause an evap leak (CEL). Did the dealer tell you if it was a very small, small, or large leak? Loose gas cap=large leak. Intermittant faulty tank vent valve=very small to small leak. If the tank vent valve is stuck wide open, then you will get a large leak and possible hard starting engine. It can be a royal pain in the butt diagnosing this evap crap!!
porsche52 is offline   Reply With Quote
Old 05-23-2009, 10:07 AM   #14
Dennis C
Rocky Mountain High
Rennlist Member
Thread Starter
 
Dennis C's Avatar
 
Join Date: Aug 2007
Location: Evergreen, Colorado
Posts: 11,289
Default

The dealer didn't mention the size of the leak. So far, we've reset it and tightened the cap and everything seems fine.
Dennis C is offline   Reply With Quote
Old 05-23-2009, 10:24 AM   #15
ltc
Super Moderator
Needs More Cowbell

Lifetime Rennlist
Member
 
Join Date: Mar 2002
Posts: 29,320
Default

I wouldn't be surprised if 'Porsche52' had 'Pig Whisperer' placed above his avatar instead of 'Addict' in the not too distant future....
ltc is offline   Reply With Quote
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
New 911 991 vs. Used - Feedback Appreciated johnhb1234 991 0 06-11-2016 10:07 PM
New 996 Owner with some trouble IronicTonic 996 Forum 30 03-23-2016 02:25 PM
Has anyone had synchros replaced under warranty or CPO? alexb76 997 Forum 8 05-24-2011 01:58 PM
Ready to buy MY05 C4S - suggested price? Tom M 996 Forum 37 05-02-2010 07:53 AM
Dealer Service Dept Sux K964 Porsche Cayenne Forum 6 01-23-2010 02:28 PM


Tags
996, cap, cayenne, check, control, emission, engine, evap, gas, leak, light, loose, porsche, tank, warning, yukon

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Forum Jump


All times are GMT -3. The time now is 11:28 AM.


Copyright ę 1998 - 2015 Rennlist.com