Go Back   986 Forum - for Porsche Boxster & Cayman Owners > Porsche Boxster & Cayman Forums > Boxster General Discussions

Reply
 
LinkBack Thread Tools Display Modes
Old 11-11-2007, 08:18 AM   #1
Registered User
 
Join Date: Mar 2007
Location: Huntington, NY
Posts: 409
DeSnorkeling & MAF Problems

I DeSnorkeled my Boxster about 8 months ago and it had been running fine. Just this past Friday 11/9/07 the CEL came on and my code reader shows P1128 & P1130 , both of which indicate a MAF problem. Has any one else had MAF problems due to DeSnorkeling? The air filter should be filtering regardless, whether the snorkel is on or off right? What is the expected life of a MAF sensor? My car is 7.5 years old with 39,095 miles on it.

Thanks

__________________
http://i25.tinypic.com/20aq3wn.jpg http://i26.tinypic.com/2zguetx.jpg http://i28.tinypic.com/2jdi1ok.jpg
2000 Boxster S: 18" Turbo wheels w/color crests, Litronics, Onboard Computer, Traction control, Cruise, Painted rollbar, Leather interior, Aluminum package, headlight washers, Porsche GT3 seats, windstop, Hi Fi six speaker amp package, DSP, CDR 220, Limited Slip, side airbags, BK Rollbar extender.

Last edited by 2000SoCalBoxsterS; 11-11-2007 at 08:22 AM.
2000SoCalBoxsterS is offline   Reply With Quote
Old 11-11-2007, 08:59 AM   #2
Registered User
 
KevinH1990's Avatar
 
Join Date: Feb 2006
Location: Virginia
Posts: 1,384
My MAF went out at about 35k. When I was researching the issue, I saw posts from plenty of other folks having the same problem. I also saw several articles that stated it was a common problem on the Boxster.

I don't recall seeing anything that suggested de-snorkeling accelerated the MAF failure. I did see several warnings about using oiled air filters such as the K&N. So my guess is that it was an age/mileage related failure.

You should have your MAF cleaned or replaced as soon as you can. When mine failed it caused the fuel/air mixture to be too rich. This caused the catalytic converter to start overheating and I had a flashing CEL. Fortunately I was able to stop and have the car towed before any damage was done. But, it is not something you want to have happen far from home.

Good luck.
__________________
2000 Arctic Silver/Black, Hard Top, On Board Computer
PNP Rear Speakers, HAES 6-Channel Amp, Avic Z140BH,
Painted Bumperettes, 2004 (OEM) Top, Homelink integrated in dash with Targa switch, 997 Shifter, Carrera Gauge Cluster with silver gauge faces, heated 12-way driver & 8-way passenger seats, Litronics, silver console
KevinH1990 is offline   Reply With Quote
Old 11-11-2007, 10:11 AM   #3
Registered User
 
Join Date: Mar 2007
Location: Huntington, NY
Posts: 409
Thanks Kevin. Have you ever cleaned a MAF? Is it relatively easy? I checked the PCA website and they say you need to clean it with electronic parts cleaner.

BTW, I also found that another cause of MAF malfunction and damage is from the oil separator bellows hose. Apparently this rubber hose will deteriorate from heat and oil and allow air to enter the intake system. It is a flexible hose that connects the separator to the engine and is located below the oil separator. It is most easily viewed and replaced from below when the car is on a lift. I'm going to check the integrity of this rubber hose too.
__________________
http://i25.tinypic.com/20aq3wn.jpg http://i26.tinypic.com/2zguetx.jpg http://i28.tinypic.com/2jdi1ok.jpg
2000 Boxster S: 18" Turbo wheels w/color crests, Litronics, Onboard Computer, Traction control, Cruise, Painted rollbar, Leather interior, Aluminum package, headlight washers, Porsche GT3 seats, windstop, Hi Fi six speaker amp package, DSP, CDR 220, Limited Slip, side airbags, BK Rollbar extender.
2000SoCalBoxsterS is offline   Reply With Quote
Old 11-11-2007, 11:57 AM   #4
Registered User
 
KevinH1990's Avatar
 
Join Date: Feb 2006
Location: Virginia
Posts: 1,384
Here's information on MAF cleaning:

http://mike.focke.googlepages.com/checkenginelightcausedbymassairflowsensor

I haven't done it myself but MAF's are expensive and it might be worth taking a shot at cleaning yours.
__________________
2000 Arctic Silver/Black, Hard Top, On Board Computer
PNP Rear Speakers, HAES 6-Channel Amp, Avic Z140BH,
Painted Bumperettes, 2004 (OEM) Top, Homelink integrated in dash with Targa switch, 997 Shifter, Carrera Gauge Cluster with silver gauge faces, heated 12-way driver & 8-way passenger seats, Litronics, silver console
KevinH1990 is offline   Reply With Quote
Old 11-11-2007, 01:35 PM   #5
Registered User
 
Join Date: Mar 2007
Location: Huntington, NY
Posts: 409
Thanks Kevin, that's a great site. I've got nothing to lose by cleaning it.
__________________
http://i25.tinypic.com/20aq3wn.jpg http://i26.tinypic.com/2zguetx.jpg http://i28.tinypic.com/2jdi1ok.jpg
2000 Boxster S: 18" Turbo wheels w/color crests, Litronics, Onboard Computer, Traction control, Cruise, Painted rollbar, Leather interior, Aluminum package, headlight washers, Porsche GT3 seats, windstop, Hi Fi six speaker amp package, DSP, CDR 220, Limited Slip, side airbags, BK Rollbar extender.
2000SoCalBoxsterS is offline   Reply With Quote
Old 11-11-2007, 01:44 PM   #6
Registered User
 
Join Date: Oct 2007
Location: MA
Posts: 58
MAF and Desnorkle

I am not sure if they are related but it could be since MAF is suppose send signal to the engine for the proper air/fuel ratio. Removing the snorkel will probably alter the amount of air (oxygen) entering the engine. In an ideal situation, the MAF sensor should detect the change in air flow and send the signal to reallocate the ratio to the engine. My best advice for you is to clean the MAF sensor with (very easy DIY) before you spend $500 for the dealer to replace it. I'd say unless your MAF sensor is totally gone, cleaning it helps 8 out of 10 times.

My Experience:
When I bought my car at the end of September, the dealer replaced the MAF sensor due to erratic idling. I had no problem with the car until after I desnorkled the car about 10 days ago. The erractic idling problem came back again (once) but it went away after I cleaned the MAF sensor. So basically I am not sure if it is related but cleaning it should be your first step.
ichiro75 is offline   Reply With Quote
Old 11-11-2007, 05:50 PM   #7
Registered User
 
Join Date: Apr 2006
Location: Iowa USA
Posts: 196
I Hope This Is My Problem 2!!

I hope this is my problem also, my CEL came on driving back from the in-laws on Saturday. The dealer said the code reader is locked in the Porsche techs tool box. I have been sitting all weekend thinking the worst. Let me know how it goes, I HOPE I will be doing the same!

By the way I have 41k miles and desnorkled also.....
__________________
2000 Boxster S
Black/Black/Black
IowaS is offline   Reply With Quote
Old 11-11-2007, 06:04 PM   #8
Registered User
 
ChrisZang's Avatar
 
Join Date: Mar 2006
Location: San Carlos, CA 94070
Posts: 1,450
I also had P1128 and P1130 some time ago.
Cleaning the MAF made the CEL go away but eventually the CEL came back for good.
A new MAF fixed the problem...
__________________
I still wave at Boxsters, but they no longer wave back :-(
2002 Boxster S "Violet" (sold but not forgotten)
2009 Carrera 4S "Kelsey" (current ride)
2015 FIAT 500e "Nikki" my commuter car
ChrisZang is offline   Reply With Quote
Old 11-11-2007, 06:11 PM   #9
Registered User
 
Join Date: Sep 2005
Location: Sacramento
Posts: 3,417
Send a message via AIM to blinkwatt
I wouldn't associate a bad MAF with desnorkeling. The air filter is still in place and untampered with when desnorkeled.

MAFs are a weak point on early 986 & 996,don't think much of it.

buy it from
www.************************************************************

Don't pay anyone to change it out,it takes 10 minutes and 1 torx bit.
__________________
-99' Zenith Blue 5-spd...didn't agree with a center divider on the freeway
-01' S Orient Red Metallic 6-spd...money pit...sold to buy a house
blinkwatt is offline   Reply With Quote
Old 11-11-2007, 06:21 PM   #10
Registered User
 
Join Date: Mar 2007
Location: Huntington, NY
Posts: 409
AutoZone will use their CEL Code reader to read and interpret the codes for free. I just bought the Actron (palm sized) CEL reader from AutoZone on Saturday for $70.00. It comes with a CD that has all of the make & model specific codes. Nice little device to save you a trip to the Porsche dealer if the problem turns out to be a DIY project.
__________________
http://i25.tinypic.com/20aq3wn.jpg http://i26.tinypic.com/2zguetx.jpg http://i28.tinypic.com/2jdi1ok.jpg
2000 Boxster S: 18" Turbo wheels w/color crests, Litronics, Onboard Computer, Traction control, Cruise, Painted rollbar, Leather interior, Aluminum package, headlight washers, Porsche GT3 seats, windstop, Hi Fi six speaker amp package, DSP, CDR 220, Limited Slip, side airbags, BK Rollbar extender.
2000SoCalBoxsterS is offline   Reply With Quote
Old 11-11-2007, 06:39 PM   #11
Registered User
 
Join Date: Sep 2005
Location: Sacramento
Posts: 3,417
Send a message via AIM to blinkwatt
Quote:
Originally Posted by 2000SoCalBoxsterS
AutoZone will use their CEL Code reader to read and interpret the codes for free. I just bought the Actron (palm sized) CEL reader from AutoZone on Saturday for $70.00. It comes with a CD that has all of the make & model specific codes. Nice little device to save you a trip to the Porsche dealer if the problem turns out to be a DIY project.
If it's the Actron Pocketscan that you bought than it doesn't have the model specific codes. For example P1128 won't be in the library of codes,but it's on Renntech.org & in the Bentley Manual so one way or another you will know what it is.
__________________
-99' Zenith Blue 5-spd...didn't agree with a center divider on the freeway
-01' S Orient Red Metallic 6-spd...money pit...sold to buy a house
blinkwatt is offline   Reply With Quote
Old 11-11-2007, 07:10 PM   #12
Registered User
 
Join Date: Apr 2006
Location: Iowa USA
Posts: 196
I will run down there tomorrow morning and let you know how it turns out....thanks for the help.
__________________
2000 Boxster S
Black/Black/Black
IowaS is offline   Reply With Quote
Old 11-11-2007, 07:30 PM   #13
Registered User
 
Join Date: Mar 2007
Location: Huntington, NY
Posts: 409
Quote:
Originally Posted by blinkwatt
If it's the Actron Pocketscan that you bought than it doesn't have the model specific codes. For example P1128 won't be in the library of codes,but it's on Renntech.org & in the Bentley Manual so one way or another you will know what it is.
No. as I said in my post. My Actron came with a CD that has the model specific codes. I have already used it. Maybe the older version didn't but mine definitely does.

__________________
http://i25.tinypic.com/20aq3wn.jpg http://i26.tinypic.com/2zguetx.jpg http://i28.tinypic.com/2jdi1ok.jpg
2000 Boxster S: 18" Turbo wheels w/color crests, Litronics, Onboard Computer, Traction control, Cruise, Painted rollbar, Leather interior, Aluminum package, headlight washers, Porsche GT3 seats, windstop, Hi Fi six speaker amp package, DSP, CDR 220, Limited Slip, side airbags, BK Rollbar extender.
2000SoCalBoxsterS 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 08:42 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