Go Back   986 Forum - for Porsche Boxster & Cayman Owners > Porsche Boxster & Cayman Forums > Performance and Technical chat

Reply
 
LinkBack Thread Tools Display Modes
Old 08-15-2005, 08:35 PM   #1
Registered User
 
Join Date: Feb 2004
Location: Orange County, CA
Posts: 120
engine stutter at 3000rpm, O2 sensor?

Hey all, thanks for being out there to hear my question. I got a 2002 Boxster Tiptronic, 33kmi.

Two weeks ago:
CEL came on, got a code P1130: "Oxygen Sensor Adaptation Idle Bank #2". After a few days of driving with no problems, the engine got all messed up and sputtered and coughed with anything above 2000rpm. Man it was bad! I reset the engine (off then on) and the problems stopped and it was okay to cruise back to the dealer. The repair was a replaced MAF sensor. Finally, the car was back working okay!

Today:
I notice an engine stutter when going through 3000rpm in 3rd gear.
1st gear - zips right up to redline no problem
2nd gear - no problem
3rd gear - from low rpm moves up to 3k, there it shakes a bit, and accels past up to 4 and 5 and up okay. I hit this engine stutter also when : I'm driving at speed, and I mash the pedal for a downshift to 3rd and again when it goes through 3krpm it stutters for a sec.

I also tried keeping it in gear and holding it at 3krpm and of course it stutters for as long as I hold it there, it coughs and lurches.

So it sounds to me like the O2 sensor fix did not completely solve the problem here. I see in other threads that there are 4 O2 sensors and a Mass Air Flow sensor. What is their relationship? Should they all have been replaced at once? I'm heading back to the dealer for more repairs... but I want to understand whats up here...

Thanks
- Xavier


Last edited by xavier405; 08-16-2005 at 07:21 AM.
xavier405 is offline   Reply With Quote
Old 08-16-2005, 06:10 AM   #2
Registered User
 
Brucelee's Avatar
 
Join Date: Jun 2004
Location: Des Moines, IA
Posts: 8,083
Yes there are multiple O2 sensors and of course, more than one could have gone bad. The MAF sensor can also go bad and any or all of these sensors can generate a code and the problems you are having.

I know of no way to diagnose your issue short of having the new codes that your engine is generating right now!

Good luck.


Brucelee is offline   Reply With Quote
Old 08-16-2005, 07:23 AM   #3
Registered User
 
Join Date: Feb 2004
Location: Orange County, CA
Posts: 120
I just made a correctin in my initial post - the repair was a new MAF sensor. And so now the problem is back... and this morning the CEL came on. I'll take 'er in to the shop and let you guys know what is up.
xavier405 is offline   Reply With Quote
Old 08-16-2005, 09:02 AM   #4
Registered User
 
Join Date: Jan 2005
Location: Southern Cali
Posts: 494
Do you take it to the dealer?

You can also goto the shop I use:

Hergeheimer Motorsports in Lake Forest

www.herg.net

It will save you a little money, not a bargain basement place.
KRZTACO is offline   Reply With Quote
Old 08-16-2005, 11:18 AM   #5
Registered User
 
Join Date: Feb 2004
Location: Orange County, CA
Posts: 120
Thanks, dude, I've heard good things about that shop. I'm still under warranty for six more weeks! So I'm going to work it at the dealer. I go to Circle Porsche. They seem okay but the real test is if they can diagnose and fix this car. My work two weeks ago was free under warrantee but appears to be incomplete.
xavier405 is offline   Reply With Quote
Old 08-16-2005, 01:08 PM   #6
Registered User
 
deliriousga's Avatar
 
Join Date: Jun 2005
Location: USA!!
Posts: 1,159
Quote:
Originally Posted by xavier405
Thanks, dude, I've heard good things about that shop. I'm still under warranty for six more weeks! So I'm going to work it at the dealer. I go to Circle Porsche. They seem okay but the real test is if they can diagnose and fix this car. My work two weeks ago was free under warrantee but appears to be incomplete.
This type of thing is tough to diagnose so make sure they have the symptoms on the invoice every time you go in. It should be typed in, not handwritten. Then if they try several things up to the expiration and they don't work it will be a related problem that should still be covered even though the warranty expires.
__________________
1987 928S4 Silver Metallic (980)/Navy (TP) 5-Speed
2000 Boxster Speed Yellow/Black 5-Speed
1966 Wife White/Brown Top
1986 Daughter White/Brown Top (Sold!)
1992 Daughter White/Blonde Top
deliriousga is offline   Reply With Quote
Old 08-16-2005, 01:56 PM   #7
Registered User
 
Join Date: Jan 2005
Location: Southern Cali
Posts: 494
Quote:
Originally Posted by deliriousga
This type of thing is tough to diagnose so make sure they have the symptoms on the invoice every time you go in. It should be typed in, not handwritten. Then if they try several things up to the expiration and they don't work it will be a related problem that should still be covered even though the warranty expires.

GOOD CALL.

KRZ
KRZTACO is offline   Reply With Quote
Old 08-26-2005, 03:21 PM   #8
Registered User
 
Join Date: Feb 2004
Location: Orange County, CA
Posts: 120
Update

Well so I took the car back to the shop. It still had the engine stutter that we thought got fixed two weeks ago.

The CEL had several fault codes all having to do with the air flow and O2 sensors, and the service department still couldn't diagnose the problem. After three or four days in the shop, they discovered the problem:

The Mass Air Flow sensor that they put in two weeks ago (a new part) had failed. Seems to be very odd, that a new part out of the box would not work. So they replaced that and now the car is running fine.

CHAPTER 2
About an hour after I got my car back, last Friday night, I realized that there was a scratch in the plastic rear window! (Shoulda done a walk around!) but I called the service right then and left a message of the problem. Long story short, we have talked a lot about it over the past week and they agreed to replace the convertible top. As the service manager looked over the car, I could tell the look of dread in his face... he knew that there is no fix for the window except for replacing the top.

So off we go, back to the shop!!! Agh!!
xavier405 is offline   Reply With Quote
Old 08-26-2005, 04:49 PM   #9
Registered User
 
Join Date: Jul 2004
Location: Houston, Texas
Posts: 7,240
I know your multiple dealer visits are frustrating, but as an owner of a boxster well out of warranty, those trips are no charge and what they're replacing as far as the MAF are concerned are $$$$.

And the scratch in the window is frustrating, but hey, you get a brand new top! That's a very nice gift that you'll enjoy for years to come.

This little sensor issue is panning out well for you dollar-wise, huh? Be happy!

In the future, if you get a CE light code that is O2 sensor related, buy four new ones from a discounted online source and have an independent mechanic replace them if you don't have a floor jack and a wrench and the hour or less it would take you to do it yourself... with your new MAF and these, you're probably going to be CE and engine stutter free for a while unless something quite odd happens to your engine.

Should another person ask me about buying an older boxster (4+ years old), I'm gonna recommend they save up and replace the MAF and all four sensors as a preventative maintenance measure sometime soon after they take possession of their car unless they have records showing this has already been done. The number of CE lights and poor performance posts on this forum surrounding these parts on aging Boxsters seems to warrant this recommendation, even though some Boxsters have 100k on them with the factory sensors working fine.
__________________
'97 Boxster (Black Hole for 42,000 Dead Presidents and counting) - 122k
New motor, transmission, suspension, and on and on and on it goes...
RandallNeighbour is offline   Reply With Quote
Old 08-28-2005, 02:01 PM   #10
Registered User
 
Join Date: Feb 2004
Location: Orange County, CA
Posts: 120
Yeah, there is indeed a silver lining. this new top. And there was even an unfortunate scratch on the top fabric already, so here comes a nice clean new top!!

Sooner or later I will scan in my printout of the engine diagnostics and attach it to this thread.

Cheers
- Xavier

xavier405 is offline   Reply With Quote
Reply


Thread Tools
Display Modes

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 On
Trackbacks are On
Pingbacks are On
Refbacks are On




All times are GMT -8. The time now is 02:46 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2020, vBulletin Solutions, Inc.
Content Relevant URLs by vBSEO 3.6.0
Copyright 2018 Pelican Parts, LLC - Posts may be archived for display on the Pelican Parts Website -    DMCA Registered Agent Contact Page