JMB RetrofitsChris Nott
Results 1 to 6 of 6
  1. #1
    Reverse Gear

    Status
    Offline
    Join Date
    Apr 2012
    Posts
    9

    PLEASE HELP. Fuel pump fuse keeps blowing! A3 1.8t 1998

    So basically as I was driving along (approx. 70kph) the car just died. It had had a funny idle all week (would be at rest, then rev up to ~1200rpm then go back down) was awaiting a vag com cable to scan te car but the day before it came the car died. Have not been able to scan the car so no codes (yet)

    ive managed to narrow it down to the fuel pump fuse constantly blowing (#28) before that, the car would just crank, and crank, an crank...)
    I am getting a spark, and when a new fuse is put in it starts, idles etc.

    i put in a 20a fuse (meant to be 15a) and it lasted a fair while longer...
    ... But blew.


    Please help! I've ordered a new fuel pump relay and will be picking it up tomorrow, fingers crossed that works. Any other ideas?
    Thanks!

  2. # ADS
    ADS
    Join Date
    Always
    Posts
    Many
     
  3. #2
    4th Gear

    Status
    Offline
    Join Date
    Feb 2006
    Location
    Lincolnshire
    Posts
    713
    Ideally, you need to see what VCDS says, but I think you're in the right area.

    Next thing would be a new fuel pump, if the fuses keep blowing.

    Im assuming you've checked the fuel pump wiring for any chafing or similar?
    Audi S3 - 2002MY - Denim Blue - Gone
    VW Polo GTI - 2011MY - Candy White - Here

  4. #3
    Reverse Gear

    Status
    Offline
    Join Date
    Apr 2012
    Posts
    9
    Quote Originally Posted by Tooks View Post
    Ideally, you need to see what VCDS says, but I think you're in the right area.

    Next thing would be a new fuel pump, if the fuses keep blowing.

    Im assuming you've checked the fuel pump wiring for any chafing or similar?
    yeah iI've taken the rear seat out and checked the wiring. All looked fine. Vcds isn't decided to work on my laptop so have my sisters and my girlfriends so giving that a go this evening

  5. #4
    Reverse Gear

    Status
    Offline
    Join Date
    Apr 2012
    Posts
    9

  6. #5
    Lewis583's Avatar
    4th Gear

    Status
    Offline
    Join Date
    Mar 2010
    Posts
    870
    AGU engine code?

    I wouldn't expect the relay to fix the issue because the fuse is "downstream" of it.
    The wiring could have chaffed anywhere from fusebox back to the pump.
    Next and cheapest(assuming you can do it yourself) place i would start would be to check wiring for shorts to earth/breaks and that you have a good earth to the pump. If they check out okay then it looks likely that the pump is dieing and drawing too much current.

    Don't just put a bigger fuse in, it was 15AMP for a reason.
    2008 E92 BMW 335i M-sport
    1990 Golf GTi w/ a 20v heart BUILD THREAD
    Full VCDS

    2006 A3 2.0T quattro S-line R.I.P. You will be missed.

    ** Breaking - 8L 1997 Audi A3 1.8T. **

  7. #6
    Reverse Gear

    Status
    Offline
    Join Date
    Apr 2012
    Posts
    9
    Quote Originally Posted by Lewis583 View Post
    AGU engine code?

    I wouldn't expect the relay to fix the issue because the fuse is "downstream" of it.
    The wiring could have chaffed anywhere from fusebox back to the pump.
    Next and cheapest(assuming you can do it yourself) place i would start would be to check wiring for shorts to earth/breaks and that you have a good earth to the pump. If they check out okay then it looks likely that the pump is dieing and drawing too much current.

    Don't just put a bigger fuse in, it was 15AMP for a reason.
    yep AGU.
    i did find two wires coming out of the steering column that were twined together but had both 'sheared' and were broken (one black one lime green)
    would these be related at all?

 

 

Similar Threads

  1. Please Help!! - Fuel Pump Location
    By baynesey in forum A4/A4 cabriolet/S4 forum(B6 chassis)
    Replies: 8
    Last Post: 23rd December 2012, 14:45
  2. fuel pump fuse keeps blowing?
    By Karlos the Avant in forum A4/S4 forum(B5 Chassis)
    Replies: 31
    Last Post: 20th October 2009, 13:55
  3. Fuse keeps blowing
    By psychochild187 in forum Air Conditioning
    Replies: 1
    Last Post: 11th June 2009, 18:58
  4. Interior light fuse keeps blowing
    By sam4191 in forum A4/S4 forum(B5 Chassis)
    Replies: 0
    Last Post: 13th April 2009, 11:27
  5. Horn Fuse keeps blowing
    By imported_TDi_Singh in forum A4/S4 forum(B5 Chassis)
    Replies: 2
    Last Post: 27th April 2006, 11:16

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
Single Sign On provided by vBSSO

Garage Plus, Vendor Tools vBulletin Plugins by Drive Thru Online, Inc.

Content Relevant URLs by vBSEO