you have Bank Fire; "... Bank fire means that the injectors are divided into 2 groups. On V8 engines cylinders 1 4 5 and 8 open together and cylinders 2 3 6 and 7 open together. This creates an equal distribution of fuel atomization inside the intake manifold.
Sequential fire means one injector is fire a while the intake valve is open. This creates an equal distribution of fuel atomization inside the one intake manifold runner during the intake stroke of that cylinder..." Miesk5 Note, Bank Fire injection is associated with Speed Density EFI; READ MORE
Source: by Ryan M (Fireguy50) at http://oldfuelinjection.com/?p=4
Strg Column Parts Break-Out Diagram in 91-96 Tilt; "...is used in just about everything Ford made from ~'91-up. The only difference is tilt or not. Everything else bolts on (airbag, brake/shift interlock, vacuum brake release, etc. column itself is virtually the same from the mid-70s to 91 (depending on options). Older columns have an integral shift indicator; cruise columns are wired slightly differently from non-cruise; later columns use a different Aluminum cradle & wheel, but they're easy to change..."
Source: by Steve83 (Steve, That dirty old truck) at http://www.supermotors.net/registry/media/573959
more strg col LINKs in my site @ http://www.broncolinks.com/index.php?index=344
FUEL SYSTEM; carbs, EFI, pumps, tanks
Electronic Fuel Injection
Skid Plate & Pads; "...If the pads are beyond re-use, I recommend camper shell mounting tape because it's a closed-cell foam intended for heavy loads with slight movement in an automotive environment..."
Source: by Steve83
Installation in an 86
Source: by Sixlitre (Malcolm H, Eddie Bauer) at FSB Actually did some work on the Bronco today
Installation, WALBRO 255LPH in a 91
Source: by DcSkater602 (Steve) at FSB another 255lph fuel pump install...
Heater & Hoses
If the heater water hoses are too hot to hold, the thermostat is OK. If the heater water hoses do not get too hot to hold, REPLACE the thermostat. If only one heater water hose gets hot while the other remains cool, a plugged heater water hose or heater core is indicated. Check to ensure the engine coolant is at the proper level, then start the engine and let it run until it is warmed to operating temperature. Turn on the heater and feel the inlet and outlet heater water hoses (18472) to the heater core (18476). If the inlet heater water hose is hot and outlet heater water hose is cooler, the heater core may be plugged. To bleed air from heater core, remove the hose at the outlet connection of the heater core (hose leading to the water pump). Allow any trapped air to flow out. When a continuous flow of coolant is obtained, connect the hose to the core. Do not overtighten heater hose clamps
More Heat; "...the 87-91 trucks with factory A/C have a recirculation door in their HVAC system, it's there to cut off outside air and keep running only in-cab air through the blower. It's vacuum controlled, and only cuts outside air when you put the control lever to off or max A/C. The problem I see with this is when you have 15F ambient temperature with some -20 windchill, heating up that air good could be a challenge for a truck with an aging heater core or tired blower fan. Last year just to see how much of difference it actually makes I zip-tied my recirculation door closed, thus running inside air through the HVAC system all winter long - things got real warm real quick, noticeable improvement even when truck is stationary. For the warmer days tho I want the recirculation door open so I can get fresh air in the cab as I drive... So I devised and implemented a solution in my 90 truck - I now have a manually controlled recirculation door that I can open and close to my liking, which means I can get tons of heat in the winter even with some nasty ambient temperatures..."
Source: by M.L.S.C. at FSB http://www.fullsizebronco.com/forum/23-technical-write-ups/165079-good-heating-upgrade-our-northern-friends.html
Blend Door Location in a 94; 80-96 similar; "...Probably the temp blend door is loose & flopping around on its own. The easiest way to see it is to fully lower the glove box, pull the ~8 screws from the heater core cover, & look inside to the L (driver's side). You'll see the cable & control lever (in top L of 2nd pic) as soon as you fold the glovebox down, so inspect it first. The 3rd shows the whole cover - it's the large section in the top center with tiny white numbers inked near its bottom edge. The cables are visible, too...."
Source: by Steve83 (Steve, That dirty old truck) at FSB
Heater Core Failure, Repeated TSB 01-15-06 for 85-96
Source: by miesk5 at FSB http://www.fullsizebronco.com/forum/show...t=84745&page=5
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.
If there is a condition of a heater core leaking or repeat heater core leak, check for electrolysis using the following procedure:
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.
Adjust engine throttle to 2000 RPM to properly get coolant flow and true electrolysis voltages.
If more than .4V is recorded, flush the
NOTE: EXPORT MARKETS, BE SURE THE WATER IS DESALINATED.
If there is still excessive voltage present in the coolant, check the engine 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.
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.
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 procedures:
Disconnect the heater hose at the right front or rear of the engine.
Remove the thermostat and housing.
Using the thermostat opening, carefully fill the engine with the proper clean coolant mixture until observed at the engine side heater hose connection.
Reconnect the heater hose and reinstall the thermostat and housing.
Fill the degas bottle to the coolant fill level mark.
Run the engine until it reaches normal operating temperatures.
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.
PART NUMBER PART NAME
Poor Heater/Defroster Performance in Engine Coolant Concerns TSB 93-24-08 for 84-94 Bronco, F Series, Aerostar, Econoline & many others; Blend door operation, Check blend door for binding and proper operation; Mode door operation. Check mode door for binding and proper operation. Blower fan operation, Check blower fan for proper operation and control. Heater core plugged, Flush cooling system. Coolant level, Check level in radiator and coolant recovery reservoir. Leakage, Check for leaks using pressure test. Thermostat operation, Check Thermostat. Refer to "Thermostat Diagnosis" procedure