Engine fuse keeps blowing (20Amp)



ChryslerMiniVan.net is the premier Chrysler Minivan Forum on the internet. Registered Users do not see the above ads.
+ Reply to Thread
Results 1 to 7 of 7

Thread: Engine fuse keeps blowing (20Amp)

  1. #1
    Join Date
    Nov 2008
    Location
    Southaven, MS
    Posts
    2,922
    Country: Users Country Flag
    Thanks
    118
    Thanked 89 Times in 73 Posts


    Question Engine fuse keeps blowing (20Amp)

    A friend of mine has a '97 Plymouth Grand Voyager. She was driving it and it turned off...turned out to be the "engine fuse" which is a 20Amp fuse under the hood. Her husband replaced it and all was fine again. Well 1 week later the fuse blew again. I know my van wouldn't run when I pulled the fuse and I got an ignition coil check engine code (I did it just to see what happens). What would cause this fuse to keep blowing on her van?
    Last edited by sideburns2009; 05-18-2009 at 08:29 PM. Reason: spelling
    2001 Infiniti i30 3.0 DOHC V6: VQ30DE 177,000 miles; 1999 Nissan Altima GLE KA24 168,000 Miles
    1997 Dodge Ram 1500 SLT Laramie 5.9 46RE, 182,000 Miles
    Prev. 97 T&C LXi 184k 3.8, 94 T&C 3.8 156k Miles, 93 GV LE 3.3 123k

  2. Remove Advertisements
    Chrysler Minivan Forums
    Advertisements
     

  3. #2
    Join Date
    Apr 2007
    Location
    Southwest
    Posts
    4,449
    Country: Users Country Flag
    Thanks
    100
    Thanked 354 Times in 302 Posts


    Can't say for sure but it sounds like the autoshutdown fuse number 12. The fuses on my schematics are numbered and not "labeled". This fuse conducts power to the autoshutdown relay coil and output contacts, O2 sensor heaters, fuel injectors and PCM. Tough to troubleshoot intermittent problems. For now you could inspect connections and wire harnesses for corrosion/chaffing/security. Disconnect the battery first to prevent PCM damage. If it come to swaptronics as a fix, try a junkyard for the cheapest way out.
    ******** We took the time to answer your post. Please give us some time and post the fix. You'll help hundreds. ********

    **** Follow all prescribed safety procedures before attempting any repairs. If in doubt, refer to a maintenance manual. ****

    96 Gr Caravan LE 3.8, 208K miles
    07 Fusion / 06 RAV 4 / 06 Accord / 94 Camry

  4. #3
    Join Date
    Nov 2008
    Location
    Southaven, MS
    Posts
    2,922
    Country: Users Country Flag
    Thanks
    118
    Thanked 89 Times in 73 Posts


    Quote Originally Posted by RIP View Post
    Can't say for sure but it sounds like the autoshutdown fuse number 12. The fuses on my schematics are numbered and not "labeled". This fuse conducts power to the autoshutdown relay coil and output contacts, O2 sensor heaters, fuel injectors and PCM. Tough to troubleshoot intermittent problems. For now you could inspect connections and wire harnesses for corrosion/chaffing/security. Disconnect the battery first to prevent PCM damage. If it come to swaptronics as a fix, try a junkyard for the cheapest way out.
    Well this fuse is labled 'engine'. Is that the one you're talking about?
    2001 Infiniti i30 3.0 DOHC V6: VQ30DE 177,000 miles; 1999 Nissan Altima GLE KA24 168,000 Miles
    1997 Dodge Ram 1500 SLT Laramie 5.9 46RE, 182,000 Miles
    Prev. 97 T&C LXi 184k 3.8, 94 T&C 3.8 156k Miles, 93 GV LE 3.3 123k

  5. #4
    Join Date
    Oct 2008
    Location
    Arizona, USA, and Elsewhere
    Posts
    3,508
    Country: Users Country Flag
    Thanks
    14
    Thanked 10 Times in 10 Posts


    Lightbulb

    Check your O2 sensor wiring. It's near the exhaust and if it touches, it'll burn through and cause an intermittent as you hit bumps. Also check all wiring anywhere NEAR the exhaust. There's many other wires that hang near the exhaust that can touch and short as the van bounces around.
    1990 Plymouth Grand Voyager LE 3.3L LWB-- 222,222 miles and counting ......
    Still Going Strong


  6. #5
    Join Date
    Nov 2008
    Location
    Southaven, MS
    Posts
    2,922
    Country: Users Country Flag
    Thanks
    118
    Thanked 89 Times in 73 Posts


    Quote Originally Posted by AzTraveller View Post
    Check your O2 sensor wiring. It's near the exhaust and if it touches, it'll burn through and cause an intermittent as you hit bumps. Also check all wiring anywhere NEAR the exhaust. There's many other wires that hang near the exhaust that can touch and short as the van bounces around.
    I'll let them know to check this stuff out....someone mentioned to them to replace their cam position sensor....don't know what that would have to do with anything.
    2001 Infiniti i30 3.0 DOHC V6: VQ30DE 177,000 miles; 1999 Nissan Altima GLE KA24 168,000 Miles
    1997 Dodge Ram 1500 SLT Laramie 5.9 46RE, 182,000 Miles
    Prev. 97 T&C LXi 184k 3.8, 94 T&C 3.8 156k Miles, 93 GV LE 3.3 123k

  7. #6
    Join Date
    Apr 2007
    Location
    Southwest
    Posts
    4,449
    Country: Users Country Flag
    Thanks
    100
    Thanked 354 Times in 302 Posts


    Quote Originally Posted by sideburns2009 View Post
    Well this fuse is labled 'engine'. Is that the one you're talking about?
    As I said, I can't be sure but, the engine control schematics I'm referencing show two 20 amp fuses in the PDC under the hood. One is as stated and the other conducts power from the hot battery bus to the fuel pump relay switch contacts and on to the fuel pump. It also supplies B+ power to the PCM.
    Last edited by RIP; 05-21-2009 at 05:14 AM.
    ******** We took the time to answer your post. Please give us some time and post the fix. You'll help hundreds. ********

    **** Follow all prescribed safety procedures before attempting any repairs. If in doubt, refer to a maintenance manual. ****

    96 Gr Caravan LE 3.8, 208K miles
    07 Fusion / 06 RAV 4 / 06 Accord / 94 Camry

  8. #7
    Join Date
    May 2011
    Posts
    1
    Country: Users Country Flag
    Thanks
    0
    Thanked 0 Times in 0 Posts


    20amp engine fuse blowin

    I just ran into this problem. I unplugged the connector to the coils replaced the fuse and it blew. So I inspected all connectors on the circuit. I noticed the o2 sensor connectors were burnt from the exhaust. I removed the upper intake cut the original wires and replaced it with a universal o2. I put every thing back together, replaced the 20amp fuse, start her up and good to go.

    P.S. buy a new upper intake gasket and big box of 20amp fuses to be on the safe side.
    If this is'nt your problem you will need the fuses to keep testing all componets on
    circuit till the fuse stops blowing then you found the problem. Don't buy anthing
    else till you done all possible tests to find the problem.
    Attached Images

+ Reply to Thread

Quick Reply Quick Reply

Similar Threads

  1. Engine Fuse Blowing?????
    By broski64 in forum 3rd Generation Chrysler Minivans: 1996-2000
    Replies: 13
    Last Post: 06-20-2010, 04:41 PM
  2. 1997 minivan keeps blowing engine fuse???
    By broski64 in forum 3rd Generation Chrysler Minivans: 1996-2000
    Replies: 2
    Last Post: 06-01-2010, 07:28 PM
  3. '97 Ram blowing 'engine' fuse
    By sideburns2009 in forum Chrysler Light Trucks
    Replies: 6
    Last Post: 04-29-2010, 03:45 AM
  4. Blowing A/C Fuse
    By jkemp in forum 3rd Generation Chrysler Minivans: 1996-2000
    Replies: 3
    Last Post: 06-23-2009, 06:41 PM
  5. Keep blowing fuse # 8 - 10A under dash
    By BobDiane in forum 3rd Generation Chrysler Minivans: 1996-2000
    Replies: 1
    Last Post: 04-20-2007, 10:03 PM

Bookmarks

Posting Permissions

  • You may post new threads
  • You may post replies
  • You may not post attachments
  • You may not edit your posts