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1994 mustang GT 5.0 blows 20 amp EEC fuse

20 amp EEC fuse in fuse block on fender under hood when cranking engine. Help

Posted by WILLIAM ROBERTS on

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jakcars

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  • 304 Answers

Have a short. This procedure may help out. Need test light and volt meter.

1. Disconnect C104 and see if the Red (RD) wire out of the Constant Control Relay Module (CCRM) (pin 12 and/or 24) is shorting to ground, to verify which side of the connector the circuit is shorted.

2. If the RD wire no longer indicates a short to ground after disconnecting C104, inspect the engine harness feeding the injectors, Idle Air Control (IAC) solenoid and Canister Purge (CANP) solenoid for chafing against bare metal on top of the engine.

3. If the RD wire still indicates a short to ground after disconnecting the C104 connector, inspect the harness to the secondary air injection solenoids, EGR Vacuum Regulator (EVR) solenoid, Mass Air Flow (MAF) and Powertrain Control Module (PCM) for a short to ground.
INFO Tip C104 is a 42-terminal connector located at the rear passenger side of the engine, near the A/C accumulator.

Posted on Nov 17, 2013

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5 Related Answers

emissionwiz

Marvin

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SOURCE: 98 PLYMOUTH GRAND VOYAGER WONT START - BLOWS ENG FUSE - HELP

You have a shorted engine harness, this is not common but it does happen, heat and engine movement cause damage to the harness, this is most common on hi miler cars and vans, the only way to fix it is to start by looking anywhere the harness rubs, that is where the damage occurs.

Posted on Oct 20, 2008

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Scorpedo

Jamie Heppner

  • 111 Answers

SOURCE: 1994 toyota corolla blowing AM2 30A fuse under the hood

On top of the cover of the fuses it will tell you what that fuse was for. Odds are whatever it is, is shorting out and will need to be replaced.

Posted on Dec 12, 2008

insanegtp

Keith Methot

  • 112 Answers

SOURCE: 20 amp fuse in the box under hood that keeps blowing

Does it only do this when the heat or A/c is on full blast.. ( I had a few of my customers with this problem and they needed a new blower motor..)

Posted on Jan 26, 2009

ourhowse

Dar

  • 2007 Answers

SOURCE: fuel pump wont run and keep blowing a fuse in the front fuse box

The power wire to your fuel pump must be shorting out somewhere. Disconnect it and see if your fuse still blows. If not, then follow the wire all the way back to the fuel pump, and look for a bare spot. Good luck!

Posted on May 04, 2009

Anonymous

  • 776 Answers

SOURCE: 03 hyundai santa fe blows ecm fuses after car is warm up and you

There is obviously a short circuit somewhere. Best solution, take vehicle to nearest Hyundai Service Center, pay diagnostic fee. They will give you an estimate of repairs (parts, labor, tax, time-frame, etc.). This way you'll find out EXACTLY what the problem is and what's required to fix it.

Posted on May 31, 2009

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Fuses and Circuit Breakers Location and Values
NOTE: The headlamp switch (11654) has an integral 20-amp circuit breaker.
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  • The fuses and circuit breakers are color-coded by amp rating.
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Circuit Circuit Protection and Rating Location Headlamps and High Beam Indicator 20 Amp. CB Integral with Lighting Switch Heated Back Window 16 GA Fuse Link Engine Compartment Power Windows, Power Seat, Power Door Locks 20 Amp. CB Starter Motor Relay Load Circuit Fuse Link In Harness Engine Compartment Lamp Fuse Link In Harness Convertible Top 25 Amp. CB Lower Instrument Panel-Reinforcement


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Cavity Number Fuse Rating Color Circuit Protected A 40 Amp Orange
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B 40 Amp Orange
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C 40 Amp Orange
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D 50 Amp Red
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  • Instrument Panel Circuit Breaker 12
E 20 Amp Light Green
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  • Fuel Pump
  • HO2S (3.8L)
  • Canister Purge Solenoid
  • EVR Solenoid
  • Ignition Control Module (3.8L)
  • IAC Solenoid
  • Fuel Injector
  • Automatic Transmission
  • Camshaft Position Sensor (3.8L)
  • MAF Sensor
F 40 Amp Orange
  • Heated Back Window
G 20 Amp Yellow
  • Fuel Pump
H 60 Amp Blue
  • Fan Control
J — — Not Used K 10 Amp Blue
  • Anti-Lock Brake Control Module
L 20 Amp Red
  • Fan Control Monitor (PCM)
M 25 Amp Yellow
  • Horn
  • Foglamps
  • Daytime Running Lights Control Module
N 25 Amp Clear
  • Fuses 5 and 9
P 20 Amp Clear
  • Radio Amplifier
Q 20 Amp Yellow
  • Generator
S 30 Amp Yellow
  • Convertible Top Motor
T 60 Amp —
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I have a 1984 mustang 5.0 gt convertible.its

its in the trunk on the passenger side
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