2000 Ford Mustang Gt 4.6

Misti

Member
Jun 23, 2019
22
7
13
39
Doniphan Mo
I have recently changed my Heater Core on my car and Not only 3 months later the Heater Core went out again! So in the meantime I have bypassed the Heater Core!
I just bought another New Core from the parts Store! Yet again I am getting ready to drop my Dash and getting into this 2 day event of fixing this heater core!
Does anyone have any idea why this keeps happening! I'm just not sure what's causing it and how to prevent it from happening again!

Thanks A Bunch Miss Misti May
 
  • Sponsors(?)


wmburns

SN Certified Technician
Aug 14, 2009
5,807
499
164
Houston Texas
There's an updated version of the motor to firewall heater hoses that have a restrictor orifice. This reduces the floor of coolant through the heater core.

How about the quality of the body grounds. Clean and tight? No rust? How about between the motor and battery ground. Low voltage drop?

Howto perform charging system voltage drop test

What about the condition of the coolant? Fresh and clean?

Finally, measure the voltage between the voltage between the heater core and batter negative. Compare the reading between the heater core and motor block. IF there is excessive voltage this will cause electrolysis.
 
  • Like
Reactions: Misti

Misti

Member
Jun 23, 2019
22
7
13
39
Doniphan Mo
I will check these things you have mentioned today! I truly dont want to replace this heater core again and again! LoL, I should be A minor pro at dropping the dash and replacing it at the rate I am going with this!
Thank You Very Much !!
 
Thread starter Similar threads Forum Replies Date
Misti 2000 Ford Mustang GT 4.6 - Rear Differential 1996 - 2004 SN95 Mustang -General/Talk- 12
ryansgts 2000 gt e85 conversion? 1996 - 2004 SN95 Mustang -General/Talk- 0
Misti 2000 Ford Mustang Gt 4.6 - Waterpump 1996 - 2004 SN95 Mustang -General/Talk- 4
W Engine 2000 ford mustang gt SN95 4.6L Mustang Tech 2
S 2000 Mustang V6 wont start SN95 V6 Mustang Tech 1
C Gauges on 2000 gt slow to work after starting 1996 - 2004 SN95 Mustang -General/Talk- 6
C 2000 Mustang - Which torque converter do I need? (Still learning) 1996 - 2004 SN95 Mustang -General/Talk- 3
Misti 2000 Ford Mustang Gt 4.6 1996 - 2004 SN95 Mustang -General/Talk- 8
L 2000 ford mustang gt fuel pump no power 1996 - 2004 SN95 Mustang -General/Talk- 1
T Help!! WHAT MODS FIRST? 1996 - 2004 SN95 Mustang -General/Talk- 41
Misti 2000 Ford Mustang Gt 4.6 1996 - 2004 SN95 Mustang -General/Talk- 4
H Help! mass airflow sensor 1996 - 2004 SN95 Mustang -General/Talk- 5
Misti 2000 Ford Mustang GT 4.6 1996 - 2004 SN95 Mustang -General/Talk- 7
E New Guy... The Welcome Wagon 2
S 2000 Ford Mustang 3.8l Upper intake sound The Welcome Wagon 3
S I have 2000 Ford Mustang 3.8l I don't know what's wrong with it I changed my heads and still same 1996 - 2004 SN95 Mustang -General/Talk- 15
I 2000 mustang swerving in rain? 1996 - 2004 SN95 Mustang -General/Talk- 6
M Please help!! Engine tick in the new edge Mustang GT 1996 - 2004 SN95 Mustang -General/Talk- 4
N New person here, engine replacement ‘00 Mustang SN95 V6 Mustang Tech 1
M 2000 ford mustang gt bell housing 1996 - 2004 SN95 Mustang -General/Talk- 1
R 2000 Mustang Power Steering Leak? 1996 - 2004 SN95 Mustang -General/Talk- 9
S SOLD 2000 Ford Mustang Gt Nasa Cmc Racer Or Hpde SN95 Mustangs For Sale (1994-04) 0
B 2000 Ford Mustang The Welcome Wagon 1
MoDriver For Sale 1964-1966 Ford Mustang Coupe Quarter Panels - Original Ford Parts - $2000 (springfield, Va) Interior Exterior Parts 0
Caydink1998 2000 Mustang V6 Shaking 1996 - 2004 SN95 Mustang -General/Talk- 1
0 Please Help! 1996 - 2004 SN95 Mustang -General/Talk- 2
D Wmburns Help W/pats 2000 Ford Mustang Gt SN95 4.6L Mustang Tech 1
J SOLD 2000 Ford Mustang Coupe 3.8l Auto, Flat Red, 210k Miles, Rebuilt 10k Miles Ago, Good Condition SN95 Mustangs For Sale (1994-04) 0
bigc2330 Expired 2000 Ford Mustang Gt SN95 Mustangs For Sale (1994-04) 2
3 SOLD 2000 Ford Mustang Gt Parts - Pi Intake Manifold, Spoiler, And More - $200 For The Lot Engine and Power Adder Parts 0
R SOLD 2000 Ford Mustang 3.8l V6 102,000 Miles Very Clean SN95 Mustangs For Sale (1994-04) 0
R For Sale: 2000 Ford Mustang GT Convertible SN95 Mustangs For Sale (1994-04) 1
MRaburn Brand New in Box - 2000 Ford Mustang Cobra R StangNet Site News 0
S 2000 Ford Mustang GT $4500 as is -$5500 fixed SN95 Mustangs For Sale (1994-04) 0
D 2000 Ford Mustang - Black - 2 dr Coupe - North Jersey SN95 Mustangs For Sale (1994-04) 0
9 SOLD Fs/ft 2000 Ford Svt F150 Lightning - 13k Miles - Prestine Mint & All Stock! Other Classifieds 2
1105 OT: Ford 2000+ SUV/Truck's catching on fire. 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- 12
G Ford 9" on a 2000 GT SN95 4.6L Mustang Tech 2
V Digital Tuning 2000 V-6 Convertible automatic SN95 V6 Mustang Tech 0
S 2000 3.8l lower intake 1996 - 2004 SN95 Mustang -General/Talk- 0
R For Sale 2000 Mustang Turbo 6 speed SN95 Mustangs For Sale (1994-04) 1
F 2000 Mustang V/6 Standard Amp 1996 - 2004 SN95 Mustang -General/Talk- 3
T_Roberts Radiator Hoses and Pulleys on a 2000 v6 Mustang 1996 - 2004 SN95 Mustang -General/Talk- 0
Kylor Need help pricing 2000 Roush Stage 2 What is it Worth?!?!? 12
J 2000 GT Idle/Running Issues SN95 4.6L Mustang Tech 6
M WTB/Trade Looking for 2000-2004 Salvage GT SN95 Mustangs For Sale (1994-04) 0
M 2000 S281SC 1996 - 2004 SN95 Mustang -General/Talk- 0
79pace 2000 GT Strong exhaust smell possibly really rich but no codes 1996 - 2004 SN95 Mustang -General/Talk- 4
F 2000 gt say for 7 years won’t start 1996 - 2004 SN95 Mustang -General/Talk- 3
N Fuel issue 2000 v6 SN95 V6 Mustang Tech 2
Similar threads