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)

P0410 & P0411

jcpr996
 Share

Recommended Posts

jcpr996 Member

jcpr996

Posted
Posted

Hello everyone:

1 - Got these yesterday morning then cleared codes car drove fine all day. Searched here and found out about the secondary injection system. Checked 40 amp fuse and relay and both are fine. Started the car cold last night SAI pump started just fine and no CEL.

2 - This morning started the car SAI pump started ran for about 30 secs. and shut down no CEL. As soon as I drove off the CEL came on.

3 - My question is. Do I now go to the air and electric change over valves? My CEL comes on after the pump shuts down.

Searched and it seems it has happened to a few people. TIA.........

Link to comment
Share on other sites
bmohr Member

bmohr

Posted
Posted

yes, this situation seemed very consistent with my experiences with the air and electric changeover valves. Blower came on startup, fan stopped like it should after 30 secs or so, drove a mile or so and code would come on afterwards. Replaced these valves and it remedied the situation.

Link to comment
Share on other sites
jcpr996 Member

jcpr996

Posted
  • Author
Posted (edited)

Thanks... Ordered those 2 and will replace. Will also replace belt and idlers that are making a nasty sound. How bad was the alternator removal for you? TIA......

Also have any of you guys replaced the check valve after the air changeover valve??

Edited by jcpr996
Link to comment
Share on other sites
bmohr Member

bmohr

Posted
Posted

Alternator..can be a pain in the ***...a recent member ran into difficulties with tapping the bushing that holds the alternator in place. Have to be a bit firm and deliberate and you will prevail. And yes, replace both electric and air changeover valves while you have everything out. One note of caution..be very careful while working because you can break some plastic parts...little black hoses and also the nipple connectors that attach various runs of coolant into/out of the water pump. The parts are cheap but its a pain waiting for another obscure part to arrive to drive your car again when breaking stuff:) Best of luck!

Link to comment
Share on other sites
jcpr996 Member

jcpr996

Posted
  • Author
Posted

thanks b:

Yes Im gonna replace those 2 valves but there is another one after the air-changeover valve. Has no vacuum lines and goes into the exhaust manifold guess ill have to leave that one alone. I know about the coolant hoses already broke the plastic part once got a nice shower of coolant. Ill tackle this and let you know how it turns out. Hope the alternator goes ok gonna start spraying some wd-40 a few days before working in there. Will let you know how it turns out...

Link to comment
Share on other sites
jcpr996 Member

jcpr996

Posted
  • Author
Posted

thanks b:

Yes Im gonna replace those 2 valves but there is another one after the air-changeover valve. Has no vacuum lines and goes into the exhaust manifold guess ill have to leave that one alone. I know about the coolant hoses already broke the plastic part once got a nice shower of coolant. Ill tackle this and let you know how it turns out. Hope the alternator goes ok gonna start spraying some wd-40 a few days before working in there. Will let you know how it turns out...

Link to comment
Share on other sites
jcpr996 Member

jcpr996

Posted
  • Author
Posted

Thanks to everyone for their help with this. Got it done yesterday and check engine is gone. The alternator removal was the worst part that bushing just didn't budge so with a little force and hammering alternator came out. When out hammered the hell out of that bushing and it budged just enough for it to go back in. installed air and electric change over valves and all is good. thankyou.gif

Link to comment
Share on other sites
  • 1 month later...
baco84 Member

baco84

Posted
Posted

i did the same job on my 2002 c4 but the valve behind the alt stays on, so after the sai pump turns off, its pumpin air back into the sai pump and souns like its misfiring, code comes on right away. need help pls.

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
 Share
Go to topic listing
×
×
  • 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.