Electronics Need help wiring something up? Thinking of adding an electrical component to your car? Need help troubleshooting that wiring glitch?

inline fuse next to battery keeps blowing

Old May 13, 2011 | 05:39 PM
  #1  
Kinka17's Avatar
Thread Starter
Junior Member
 
Joined: Nov 2009
Posts: 9
Likes: 0
Car: 89 Iroc Z Convertible
Engine: 5.7 TPI
Transmission: T-5 Manual
inline fuse next to battery keeps blowing

The fuse that is next to the battery blows when I cycle my key on. I know its related to my fuel pump, fuel relay and oil sending switch. I have replaced all three of them. I did the oil sending switch last night, and the fuse didn't blow at all. I pulled the car out of the garage and parked it. I went to move it today and bingo, the fuse blows. Can anyone help me?
Reply
Old May 13, 2011 | 06:02 PM
  #2  
red88tagta's Avatar
Member
iTrader: (14)
 
Joined: Jan 2008
Posts: 210
Likes: 2
From: Kettering, ohio
Car: Restored 88 GTA
Engine: 5.0
Transmission: Auto
Axle/Gears: Posi
Re: inline fuse next to battery keeps blowing

That fuse should be the one powering the maf sensor, maf burn off relay, ecm and fuel pump relay. Look for deteriorated wiring under those relays, drivers side, mounted on the firewall above the brake master cylinder.
Reply
Old May 13, 2011 | 07:32 PM
  #3  
camaronewbie's Avatar
Supreme Member
 
Joined: Sep 2002
Posts: 9,192
Likes: 19
From: Cary, North Carolina
Car: 1992 RS
Engine: Carbed 350
Transmission: 700R4
Axle/Gears: 3.42 posi
Re: inline fuse next to battery keeps blowing

What amperage is the fuse you are installing? If memory serves me, it's supposed to be a 20 amp fuse.
Reply
Old May 13, 2011 | 09:59 PM
  #4  
Kinka17's Avatar
Thread Starter
Junior Member
 
Joined: Nov 2009
Posts: 9
Likes: 0
Car: 89 Iroc Z Convertible
Engine: 5.7 TPI
Transmission: T-5 Manual
Re: inline fuse next to battery keeps blowing

I've been using 20s. I even tried a 25 once to see if it made a difference.

I don't see any broken wires. Unless I have to unplug the entire wire harness and go wire by wire.
Reply
Old May 14, 2011 | 05:13 AM
  #5  
red88tagta's Avatar
Member
iTrader: (14)
 
Joined: Jan 2008
Posts: 210
Likes: 2
From: Kettering, ohio
Car: Restored 88 GTA
Engine: 5.0
Transmission: Auto
Axle/Gears: Posi
Re: inline fuse next to battery keeps blowing

Maybe I should clarify "deteriorated wires" The hot wire should be all of the orange ones. Look for something melted together. If not then process of elimination. Unplug the maf and burn off relays first, test results.
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
thunder57
LTX and LSX
1
Nov 7, 2015 02:28 PM
drumstixer
Body
5
Sep 29, 2015 03:02 PM
z28joe2
Engine/Drivetrain/Suspension Wanted
2
Sep 28, 2015 05:54 PM
raymondandretti
Electronics
1
Sep 27, 2015 06:43 PM
lanceflame44
Tech / General Engine
0
Sep 25, 2015 12:28 PM


Thread Tools
Search this Thread

All times are GMT -5. The time now is 07:29 PM.