Fan Fuse keeps blowing..... HELP!
Thread Starter
Registered User
Joined: Apr 2000
Posts: 1,070
From: Austin, TX or Texas State University at San Marcos
Fan Fuse keeps blowing..... HELP!
The fan fuse (under the hood) keeps blowing on me and then my car starts to overheat.... It is only this fuse and no other. I know it has to be something in the wiring but i know that if i take it anywhere the guys in the shop will sit around and scratch their heads while they spend my money doing nothing.... I was wondering if anybody could tell me what to look for or what would be causing this.... Throwing codes 77(fan), 83(reverse inhibit), 84(skipt shift)... They are all linked on the same fuse so when i replace the fuse the codes go away.... until the fuse blows AGAIN.... HELP!!!
Chris
Chris
Registered User
Joined: Dec 1969
Posts: 27,725
From: Little Rock, AR
That fuse powers:
O2 sensors
reverse lock out solenoid
skip shift solenoid
EVAP solenoid
EGR solenoid
fans
The most common thing I have seen that causes the fuse to blow is a burned and grounding out O2 harness wire. I would check that first. People with headers seem to be more vulnerable.
O2 sensors
reverse lock out solenoid
skip shift solenoid
EVAP solenoid
EGR solenoid
fans
The most common thing I have seen that causes the fuse to blow is a burned and grounding out O2 harness wire. I would check that first. People with headers seem to be more vulnerable.
Banned
Joined: May 2002
Posts: 1,475
Originally posted by shoebox
That fuse powers:
O2 sensors
reverse lock out solenoid
skip shift solenoid
EVAP solenoid
EGR solenoid
fans
The most common thing I have seen that causes the fuse to blow is a burned and grounding out O2 harness wire. I would check that first. People with headers seem to be more vulnerable.
That fuse powers:
O2 sensors
reverse lock out solenoid
skip shift solenoid
EVAP solenoid
EGR solenoid
fans
The most common thing I have seen that causes the fuse to blow is a burned and grounding out O2 harness wire. I would check that first. People with headers seem to be more vulnerable.
Thread Starter
Registered User
Joined: Apr 2000
Posts: 1,070
From: Austin, TX or Texas State University at San Marcos
Originally posted by shoebox
That fuse powers:
O2 sensors
reverse lock out solenoid
skip shift solenoid
EVAP solenoid
EGR solenoid
fans
The most common thing I have seen that causes the fuse to blow is a burned and grounding out O2 harness wire. I would check that first. People with headers seem to be more vulnerable.
That fuse powers:
O2 sensors
reverse lock out solenoid
skip shift solenoid
EVAP solenoid
EGR solenoid
fans
The most common thing I have seen that causes the fuse to blow is a burned and grounding out O2 harness wire. I would check that first. People with headers seem to be more vulnerable.
Thanks.... Ill check it tomorrow when i have the time.... Anything else you can think of just in case that isnt it??? How do i see if its "grounded"?
Registered User
Joined: Jun 2003
Posts: 288
From: Myrtle Beach, SC
if any part of the wire is shorted to a ground, or grounded, it simply means that the wire itself (metallic conductor core, under the insullation) is touching some sort of metal, as in the 02 wires melting through the plastic insullator and the metal wire touching your exhaust pipe. You most likely have some wire shorting to ground somewhere like this. Hope this helps. J-Bird
Thread Starter
Registered User
Joined: Apr 2000
Posts: 1,070
From: Austin, TX or Texas State University at San Marcos
Originally posted by jbird
if any part of the wire is shorted to a ground, or grounded, it simply means that the wire itself (metallic conductor core, under the insullation) is touching some sort of metal, as in the 02 wires melting through the plastic insullator and the metal wire touching your exhaust pipe. You most likely have some wire shorting to ground somewhere like this. Hope this helps. J-Bird
if any part of the wire is shorted to a ground, or grounded, it simply means that the wire itself (metallic conductor core, under the insullation) is touching some sort of metal, as in the 02 wires melting through the plastic insullator and the metal wire touching your exhaust pipe. You most likely have some wire shorting to ground somewhere like this. Hope this helps. J-Bird
Hey thanks alot.
Thread Starter
Registered User
Joined: Apr 2000
Posts: 1,070
From: Austin, TX or Texas State University at San Marcos
Originally posted by shoebox
That fuse powers:
O2 sensors
reverse lock out solenoid
skip shift solenoid
EVAP solenoid
EGR solenoid
fans
The most common thing I have seen that causes the fuse to blow is a burned and grounding out O2 harness wire. I would check that first. People with headers seem to be more vulnerable.
That fuse powers:
O2 sensors
reverse lock out solenoid
skip shift solenoid
EVAP solenoid
EGR solenoid
fans
The most common thing I have seen that causes the fuse to blow is a burned and grounding out O2 harness wire. I would check that first. People with headers seem to be more vulnerable.
Thread Starter
Registered User
Joined: Apr 2000
Posts: 1,070
From: Austin, TX or Texas State University at San Marcos
Originally posted by shoebox
Does it happen when one of the fans is on? Maybe a fan is bad and pulling too much current.
Does it happen when one of the fans is on? Maybe a fan is bad and pulling too much current.
Is that a possibility? Has that happened before? IF so how do i test it....... Just replace the fans?
Registered User
Joined: Feb 2002
Posts: 191
From: Cape Coral, FL
Do you still have the Air pump on the car? I kept blowing the A/P FAN fuse and figured out it was the A/P locked up blowing fuses.
Just an idea. Just unplug both connections on the A/P. It wont cause a code to pop!
Just an idea. Just unplug both connections on the A/P. It wont cause a code to pop!
Thread Starter
Registered User
Joined: Apr 2000
Posts: 1,070
From: Austin, TX or Texas State University at San Marcos
Now its blowing the fuse as soon as i put it in........ I really dont want to take it anywhere because they are just going to sit around and scratch their heads while they charge me out the *** to fix it....
Registered User
Joined: Mar 2000
Posts: 1,955
From: Point Pleasant, NJ... USA
Originally posted by Zjoker
If its the fan fuse, there was a bulliten out on it. The fix is to replace the wire with the next larger gage and move up to a 25 amp. This is common in the problem in the winter month.
If its the fan fuse, there was a bulliten out on it. The fix is to replace the wire with the next larger gage and move up to a 25 amp. This is common in the problem in the winter month.
See:
http://web.archive.org/web/200111080.../63-65-02.html
