Results 1 to 4 of 4

Thread: OT: Ford F-150 heater core bypass

  1. #1
    Join Date
    Dec 2003
    Location
    Austin, TX
    Posts
    1,177

    Default OT: Ford F-150 heater core bypass

    Can i just couple the hoses together? It's a '97 F-150 single cab 4.6L, and it's apparently eaten up its 2nd heater core in 25k miles. (Yes, i know, dont buy a ford. Thank god this isn't mine) Wondering if coupling the hoses will cause any kind of damage, aside from a lack of heat.
    1994 540iT/6 - 316k miles, 4.0L, 6spd, UUC Evo 2, Bilstein HD's, etc.
    1995 540iA M-Sport - 73k miles. 1 of 1 auto AW3 cars.
    2006 330i - 131k miles, wife mobile.

  2. #2
    Join Date
    Jan 2004
    Location
    Benneton (United Colors of)
    Posts
    3,067

    Default

    can't you get a heatercore "made" for an american car (ie a wee bit stronger and whatnot)? im not sure what it would damage, ive been driving mine with a bypass for about 15k miles, the only problem would be if it overheated and you needed the extra cooling of the heater to bring the temps back down quickly.
    "..Torchinski v. Peterson that it is legal to carry a concealed weapon, so long the weapon is totally slick like a huge ass machine gun that you carry under a trench coat, like in the Matrix."


  3. #3
    Join Date
    Jan 2004
    Location
    Benneton (United Colors of)
    Posts
    3,067

    Default

    bill might know more about the validity of this, buuuuttt
    here are some volk talking about excess transient voltage killing heater cores on your vehicle

    here
    "..Torchinski v. Peterson that it is legal to carry a concealed weapon, so long the weapon is totally slick like a huge ass machine gun that you carry under a trench coat, like in the Matrix."


  4. #4
    Join Date
    Jan 2004
    Posts
    4,148

    Default It is an electrolysis problem, here is the factory bulletin on it along

    with the fix for it. In the meantime you can connect the hoses to each other. But i would still fix the electrolysis problem because it will attack other components in the engine also... next it will be the radiator or the freeze plugs. Do the tests indicated to confirm

    1997 Ford Truck F 150 2WD Pickup V8-281 4.6L VIN W EFI
    Heating and Air Conditioning: All Technical Service Bulletins
    Heater Core - Repeated Failure
    Article No.
    01-15-6
    08/06/01
    ^ CLIMATE CONTROL - REPEAT HEATER CORE FAILURE
    ^ COOLING SYSTEM - REPEAT HEATER CORE FAILURE
    FORD:
    1985-1994 TEMPO
    1985-1997 THUNDERBIRD
    1985-2002 CROWN VICTORIA, ESCORT, MUSTANG
    1986-2002 TAURUS
    1988-1993 FESTIVA
    1993-1997 PROBE
    1994-1997 ASPIRE
    1995-2000 CONTOUR
    2000-2002 ESCORT ZX2, FOCUS
    2002 THUNDERBIRD
    1985-1990 BRONCO II
    1985-1996 BRONCO
    1985-1997 F-250 HD, F-350
    1985-2002 ECONOLINE, F-150, RANGER
    1986-1997 AEROSTAR
    1988-1997 F SUPER DUTY
    1991-2002 EXPLORER
    1995-2002 WINDSTAR
    1997-2002 EXPEDITION
    1999-2002 SUPER DUTY F SERIES
    2000-2002 EXCURSION
    2001-2002 ESCAPE, EXPLORER SPORT TRAC, EXPLORER SPORT
    LINCOLN:
    1985-1992 MARK VII
    1985-2002 CONTINENTAL, TOWN CAR
    1993-1998 MARK VIII
    2000-2002 GLS
    1998-2002 NAVIGATOR
    MERCURY:
    1985-1994 TOPAZ
    1985-1997 COUGAR
    1985-2002 GRAND MARQUIS
    1986-2002 SABLE
    1991-1999 TRACER
    1995-2000 MYSTIQUE
    1999-2002 COUGAR
    1993-2002 VILLAGER
    1997-2001 MOUNTAINEER
    ISSUE
    Some vehicles may exhibit (repeat) heater core leaks. This may be caused by a chemical reaction called electrolysis. Electrolysis involves an ion
    exchange between the heater core and engine coolant which can result in a breakdown of the heater core material. This is similar to the operation of a
    battery.
    ACTION
    Check for electrolysis on any vehicle with a heater core failure. If electrolysis is verified, flush the coolant and follow additional steps as required. Refer
    to the following Service Procedure for details.
    SERVICE PROCEDURE

    1997 Ford Truck F 150 2WD Pickup V8-281 4.6L VIN W EFI
    Electrolysis Inspection
    If there is a condition of a heater core leaking or repeal heater core leak, check for electrolysis using the following procedure:
    1. To check for electrolysis use a DVOM set on DC volts. Place the positive probe of the meter in the engine coolant and the negative probe on the
    negative battery post.
    2. Adjust engine throttle to 2000 RPM to properly get coolant flow and true electrolysis voltages.
    3. If more than .4V is recorded, flush the coolant and recheck (follow guidelines in TSB 98-23-16 for Cougar). See Coolant Fill Procedure below to
    remove trapped air on 4.6/5.4/6.8L modular engines.
    NOTE
    EXPORT MARKETS, BE SURE THE WATER IS DESALINATED.
    4. If there is still excessive voltage present in the coolant, check the engine to body/battery grounds. Also, verify proper grounding of any aftermarket
    electrical/electronic equipment which has been installed into the vehicle. Improperly grounded electrical devices can cause electrolysis to occur.
    5. If the condition is still present after the grounds have been checked, it may be necessary to add extra grounds to the heater core and engine. A hose
    clamp can be used to secure a 16 AWG stranded copper wire to the heater core inlet tube. The other end should be secured to an EXISTING
    FASTENER on the body sheet metal. Extra grounds to the engine should be attached between EXISTING FASTENERS on the engine and body
    sheet metal. Verify continuity of any added grounds to the negative battery terminal.
    6. If the condition is still present, add a restrictor (part F1UZ-18D406-A) on the inlet hose with the arrow facing the direction of coolant flow (toward
    heater core). Cut the line and install with 2 hose clamps. It is important that the restrictor be installed in the right direction of flow and as close to
    the engine block as possible (not near the heater core itself).
    Coolant Fill Procedure
    At times, in order to completely remove any trapped air in the cooling system of vehicles equipped with 4.6/5.4/6.8L modular engines, it may be
    necessary to use the following procedure:
    1. Disconnect the heater hose at the right front or rear of the engine.
    2. Remove the thermostat and housing.
    3. Using the thermostat opening, carefully fill the engine with the proper clean coolant mixture until observed at the engine side heater hose
    connection.
    4. Reconnect the heater hose and reinstall the thermostat and housing.
    5. Fill the degas bottle to the coolant fill level mark.
    6. Run the engine until it reaches normal operating temperatures.
    7. Select max heat and max blower speed on the climate system.
    NOTE
    IF THE HEAT OUTPUT IS INSUFFICIENT, OR THE ENGINE DOES NOT REACH NORMAL OPERATING TEMPERATURES, VERIFY
    PROPER THERMOSTAT OPERATION AND REPEAT PROCEDURE IF REQUIRED.
    Parts Block
    OTHER APPLICABLE ARTICLES: 98-23-16
    WARRANTY STATUS: INFORMATION ONLY
    OASIS CODES: 208000, 208999, 402000

Similar Threads

  1. heater core DIY
    By shogun in forum 5 Series BMW
    Replies: 0
    Last Post: 11-12-2010, 06:21 AM
  2. Heater Core Bypass - 89 535i E34 model
    By angusbn in forum 5 Series BMW
    Replies: 6
    Last Post: 07-20-2008, 06:58 PM
  3. What Heater Core do I have?
    By uflnuceng in forum 5 Series BMW
    Replies: 6
    Last Post: 12-07-2007, 01:52 AM
  4. E34 heater core bypass
    By ktteoh in forum 5 Series BMW
    Replies: 0
    Last Post: 01-06-2007, 08:12 AM
  5. OK to use Copper Tee to Bypass Heater?
    By uscharalph in forum 5 Series BMW
    Replies: 9
    Last Post: 08-24-2006, 09:32 PM

Posting Permissions

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