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Discussion Starter #1
Does anyone know where the three nipples on the VMV of a 96 Bronco 5.0 go? One of mine goes to the throttle body, the other goes to a hard line to a canister hanging in front of the motor. Where does the third line go? The PO had two connected to the DPFE because he had the wrong egr tube on the truck. I've searched for days and can't find any info on where all the hoses go.
 

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yo,



96 Bronco 5.0 Emission Vacuum Diagram

Cannister Carbon Canister (aka Charcoal Canister, Vapor Canister, Evaporative Emission (EVAP) Canister for the Evaporative System)
 

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Discussion Starter #4
My underhood label didn't have a clear view of where it went. It kept saying that there were hoses going to the cat and there are none like that that I can find.
 

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yo STB,


Air Inlet Tube (#4 in Diagram) Location at Catalytic Converter in Exhaust System Parts Break-Out Diagram in 96 5.0L & 5.8L & F-150, F-250, F-350 Regular Cab, SuperCab and Chassis Cab, 4x2 and 4x4, 4.9L SFI, etc. Source: by Ford


96 Bronco 5.0 VECI DECAL for our 96 CALIBRATION 6-54J-R10
also here is the Parts List for the 96 5.0
NAME/DESCRIPTION ENGINEERING NO. SERVICE NO.

SENSOR ASSY, Catalyst Exhaust Gas Oxygen Monitor- DOWNSTREAM F65F 9G444-CA F65Z 9G444-C
RESERVIOR ASSY, EGR Vacuum F4UE 9E453-CA F4UZ 9E453-C
CONTROL ASSY, EGR Vacuum Regulator FOTE 9J459-A1A FOTZ 9J459-A
SENSOR ASSY, EGR Pressure Valve F48E 9J460-BA, BB F4ZZ 9J460-B
VALVE ASSY, Thermactor Air Control Solenoid Vacuum E7TE 9H465-AA E7TZ 9H465-A
VALVE ASSY, Thermactor Air Control Solenoid Vacuum E7TE 9H465-BA E7TZ 9H465-B
SENSOR ASSY, Exhaust Gas Oxygen - UPSTREAM F68F 9F472-AA F68Z 9F472-A
VALVE ASSY, EGR F27E 9D475-A2B, A4B F2TZ 9D475-A
TUBE ASSY, EGR Valve to Exhaust Manifold F6TE 9D477-ED, EE F6TZ 9D477-E
PUMP ASSY, Thermactor E5TE 9A486-DB E5TZ 9A486-D
VALVE ASSY, Thermactor Check - Hose Nipple One End-Press in Tube Other End - DOWNSTREAM E8DZ 9A487-A
VALVE ASSY, Thermactor Check - 3/4-14 Thread One End-Hose Nipple One End - UPSTREAM E9VZ 9A487-A
VALVE ASSY, Thermactor Control E9AE 9F491-AA F0AZ 9F491-A
INJECTOR ASSY, Fuel F2TE 9F593-A3A F2TZ 9F593-A
VALVE ASSY, Throttle Air By-Pass F4TE 9F715-AA F4TZ 9F715-A
REGULATOR ASSY, Fuel Charging Pressure F4TE 9C968-BA F4TZ 9C968-B
POTENTIOMETER ASSY, Throttle Position Sensor F6TF 9B989-AA F6TZ 9B989-AA
DISTRIBUTOR ASSY F2TE 12127-AA F2TZ 12127-A
SENSOR ASSY, Mass Airflow F5UF 12B579-BA F5UZ 12B579-BA
SENSOR ASSY, Engine Electronic Control Coolant Temperature F5AF 12A648-AA F5AZ 12A648-A
PROCESSOR AND CALIBRATOR ASSY, Powertrain Control Module - EEC-V - TYPE: ML1-441 - REPROGRAMMABLE F6TF 12A650-PC F6TZ 12A650-PC
SENSOR ASSY, Air Charge Temperature F5AF 12A697-AA F5AZ 12A697-A




btw;
Vacuum Gauge Diagnosis 15-22 in-Hg in 96 Bronco Workshop Manual by Ford

Wiring Diagrams in 86-current and TSBs for 80 - Current by Ford via BBBMotor

96 Bronco Owners Guide by Hiller Ford

96 Bronco-F-Series Workshop Manual (PARTIAL)

96 OBD System Operation
Excerpt; "...The mechanical AIR system uses a belt-driven pump as well as a check valve to deliver air into the exhaust
system where required. The belt-driven air pump runs continuously so a bypass valve and/or diverter valve is
used to direct airflow to the exhaust manifold (upstream air), the COC catalyst (downstream air), or directly to
atmosphere (bypass/dump).
The Mechanical AIR pump flow check monitors the HO2S signal at idle to determine if secondary air is being
delivered into the exhaust manifold (upstream). The air/fuel ratio is commanded open-loop rich, the AIR
bypass/diverter valves are directed upstream, and the time required for the HO2S signal to go lean is monitored.
If the HO2S signal does not go lean within the allowable time limit, a low/no flow malfunction is indicated. (P0411)
If the vehicle is equipped with a COC catalyst, the downstream air delivery as well. The air/fuel ratio is
commanded open-loop rich, the AIR bypass/diverter valves are directed downstream, and the time required for
the HO2S signal to go lean is monitored. If the rear HO2S signal does not go lean within the allowable time limit,
a low/no flow malfunction is indicated. (P1411)
The PCM outputs that control the bypass and diverter valves are checked for circuit continuity (P0413, P0414
Bypass valve), (P0416, P0417 Diverter valve)..."
96 Maintenance Schedules by Ford


Parts Catalog 87-91 and 92-96 Bronco (Partial) by Ford

96 Bronco HVAC Vacuum Diagram attached below
 

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yo,
Ask local Ford dealer service manager if the VECI info (Vacuum Diagram & Calibration Parts List for 88 & UP) is available for free; most important info to have is the Calibration Code on sticker inside drivers side door jamb or A pillar.
Ford removed the Vehicle Emission Control Information (VECI) Decal site from the Ford site; http://www.motorcraftservice.com/ in mid-2014.

Ford rep later told me that the VECI is available @ local Ford Dealers. My dealer tech supervisor said when I asked him, "VECI, whaaat?"

Here is the story
Post #11

Appears Ford now wants to Sell the VECI
 
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