924Board.org

KlaasyT · Joined: 20 Jul 2006 Posts: 25 Location: Ontario Canada

Hi, thinking of carrying a spare fuel pump relay and PET seems to show only one for the 924 (433906059) yet when I search suppliers I get a part number with 931 xxx xxx... and it is way more expensive. The 931 relay is different? Is this correct?
Thanks
Clarence
_________________
81 931 Minerva Blue
72 911t Irish green
84 911 Carrera Targa sold
72 911t rs look project
71 911e rusty future project

Paul · Posted: Wed Dec 19, 2007 1:28 pm Post subject:

Yep the 931 version has a rev limiter built in.

931:

924:

_________________
White 87 924S "Ghost"
Silver 98 986 3.6l 320 HP "Frank N Stein"
White 01 986 "Christine"
Polar Silver 02 996TT. "Turbo"
Owned and repaired 924s since 1977
Porsche: It's not driving, it's therapy.

KlaasyT · Joined: 20 Jul 2006 Posts: 25 Location: Ontario Canada

Thanks for the speedy reply Paul. That explains the price difference.

Clarence
_________________
81 931 Minerva Blue
72 911t Irish green
84 911 Carrera Targa sold
72 911t rs look project
71 911e rusty future project

emoore924 · Joined: 13 Apr 2004 Posts: 2822

So, does that mean that a relay w/out the limiter will work fine, just that there's no rev limiter? Not sure I have a problem with that...

Paul · Posted: Thu Dec 20, 2007 9:29 am Post subject:

Might be an issue with the amp rating, here's a great thread:

http://www.924board.org/viewtopic.php?t=10360&postdays=0&postorder=asc&highlight=relay+limiter&start=15
_________________
White 87 924S "Ghost"
Silver 98 986 3.6l 320 HP "Frank N Stein"
White 01 986 "Christine"
Polar Silver 02 996TT. "Turbo"
Owned and repaired 924s since 1977
Porsche: It's not driving, it's therapy.

Paul · Posted: Thu Dec 20, 2007 9:31 am Post subject:

And from the tech section:

924 FAQ (Technical) section:

"One special note for the 931: the 931 uses a special fuel pump relay, not common with VW's, and not surprisingly much more expensive. Due to the expense, the relay will often get replaced with the cheaper relay - which will work, for a while. However, the key difference is that the 924 relay is only rated for 12A, whereas the 931 relay is rated for 16A! So, if the incorrect relay is used, it will continue to blow. Time to bite the bullet and spend the extra money for the right part. Think of it as an investment in reliability."
_________________
White 87 924S "Ghost"
Silver 98 986 3.6l 320 HP "Frank N Stein"
White 01 986 "Christine"
Polar Silver 02 996TT. "Turbo"
Owned and repaired 924s since 1977
Porsche: It's not driving, it's therapy.