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

Reply
 
LinkBack Thread Tools Display Modes
Old 11-02-2015, 12:18 PM   #1
On the slippery slope
 
JayG's Avatar
 
Join Date: Mar 2014
Location: San Diego
Posts: 3,422
Garage
Angry Got P300, P301 P303 codes

Was driving along, stopped at a traffic light and all of a sudden it started idling a little rough and the CEL started to flash and the computer said to drive slowly to service

Started to drive and after about 100 feet, the light went out and the engine was smooth again.

I was about 1 mile to my home, drove home and plugged in my durametric

There were 3 codes


This is the first time I have gotten ANY codes

I did a weekend at the track a week ago and all was good

I have 74k on the clock,. Plugs were changed at 60k Just did an oil change before i went to the track. All the oil changes (4)I have done since i bought the car in March 14 have been good

Any thoughts????

__________________
2004 Boxster S 6 speed - DRL relay hack, Polaris AutoTop DIY
2004 996 Targa Tip
Instructor - San Diego region, 2014 Porsche Performance Driving School
2013 C300, 2010 Jetta 2011 Mazda 3, 1998 Windstar - Dog van , 2004 F-150 "Big Red"

Last edited by JayG; 11-02-2015 at 02:19 PM.
JayG is offline   Reply With Quote
Old 11-02-2015, 12:29 PM   #2
98 Arctic silver 986
 
tommy583's Avatar
 
Join Date: Jul 2011
Location: Upstate, NY
Posts: 1,278
Garage
I know it never rains in San Diego but maybe the coil packs are cracked and got wet? Just shooting in the dark here. I hope you get it sorted.
tommy583 is offline   Reply With Quote
Old 11-02-2015, 12:32 PM   #3
On the slippery slope
 
JayG's Avatar
 
Join Date: Mar 2014
Location: San Diego
Posts: 3,422
Garage
Its not wet here now nor did I drive over a puddle
__________________
2004 Boxster S 6 speed - DRL relay hack, Polaris AutoTop DIY
2004 996 Targa Tip
Instructor - San Diego region, 2014 Porsche Performance Driving School
2013 C300, 2010 Jetta 2011 Mazda 3, 1998 Windstar - Dog van , 2004 F-150 "Big Red"
JayG is offline   Reply With Quote
Old 11-02-2015, 12:33 PM   #4
Registered User
 
Join Date: Jun 2013
Location: Texas
Posts: 23
Quote:
Originally Posted by JayG View Post
Was driving along, stopped at a traffic light and all of a sudden it started idling a little rough and the CEL started to flash and the computer said to drive slowly to service

Started to drive and after about 100 feet, the light went out and the engine was smooth again.

I was about 1 mile to mi home, drove home and plugged in my durametric

There were 3 codes


This is the first time I have gotten ANY codes

I did a weekend at the track a week ago and all was good

I have 74k on the clock,. Plugs were changed at 60k Just did an oil change before i went to the track. All the oil changes (4)I have done since i bought the car in March 14 have been good

Any thoughts????
I know this might sound odd, but i've had a boxster for 2 years that has run like this everytime i start it up.
Code reader stated cylinder 3 misfire.
We took (1) coil from an old engine that came from another boxster in our garage, and popped in a new MAF that we had bought a while back. This thing runs like a top now. The MAF is pretty expensive so i wouldn't go for that first, but i did both at the same time so i can't say what caused it.
Original Bacon is offline   Reply With Quote
Old 11-02-2015, 12:37 PM   #5
98 Arctic silver 986
 
tommy583's Avatar
 
Join Date: Jul 2011
Location: Upstate, NY
Posts: 1,278
Garage
Hmmm. Well I would start by checking the coil packs and wires. It could be as easy as loose connectors or old coil packs.
tommy583 is offline   Reply With Quote
Old 11-02-2015, 12:59 PM   #6
Registered User
 
pony13ca's Avatar
 
Join Date: Aug 2013
Location: Toronto, Canada
Posts: 202
I got my MAF wet a little while ago, and threw the same codes, and idled really rough. Took it out, and gave it a good clean, and left it to dry over night. In the morning she was good as new.
pony13ca is offline   Reply With Quote
Old 11-03-2015, 03:55 AM   #7
Artist, 986S tinkerer
 
NewArt's Avatar
 
Join Date: Aug 2013
Location: Montreal, Canada
Posts: 1,631
That bank is on the same side as the coolant overflow tube. I had this problem once with a cracked coil pack and a burp from the coolant tank. I changed the coil and displaced the tube a bit.
__________________
James
2004 986 S
987 air intake TB and plenum, Mantissport 2 litre sump, UDP, Bilstein B6 with H&R lowering spings, re71-rs for track, other stuff.
https://www.youtube.com/user/12shoes2
NewArt is offline   Reply With Quote
Old 11-03-2015, 06:13 AM   #8
On the slippery slope
 
JayG's Avatar
 
Join Date: Mar 2014
Location: San Diego
Posts: 3,422
Garage
If the problem is cracked coils and them getting wet, I suppose I could spray some water up that side of the engine when it is running and see if it throws a code

Is that a good idea?

On another forum, someone suggested it might have been an injector as well

__________________
2004 Boxster S 6 speed - DRL relay hack, Polaris AutoTop DIY
2004 996 Targa Tip
Instructor - San Diego region, 2014 Porsche Performance Driving School
2013 C300, 2010 Jetta 2011 Mazda 3, 1998 Windstar - Dog van , 2004 F-150 "Big Red"

Last edited by JayG; 11-03-2015 at 06:19 AM.
JayG 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 04:13 PM.


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