Service Procedures: Ford Bronco 1987-1991

Technical Reference

Member-uploaded diagrams & documents for this generation. AI-classified; community-verified where badged.

Service Procedures

• Ford Canister Purge Regulator Valve (CANP 9C915) Test Procedure - Figure 11
  This document is a one-page service procedure describing how to test the Canister Purge Regulator Valve (part reference 9C915), a component of the evaporative emissions control system. Two test steps are given. First…
• 1990 Ford Speed Control 31-4: Cruise Control Component Locations & Operation
  This scanned page (Section 31-4, Speed Control) is from a Ford electrical/vacuum troubleshooting manual and covers the speed control (cruise control) system. The top of the page is a component location table listing…
• Step 6: the Idle Air Adjust Spacer is preset for 5.0L and smaller; remove its center cup plug with a center punch for 5.8L and 7.5L truck engines.
• Ford Idle Air Adjust Spacer Installation Instructions F2PE-9F939-AA (Sheet 1/3)
  This is Sheet 1 of 3 of an official Ford instruction sheet (I.S. 6273, © 1991 Ford Motor Company, dated 8-91) covering installation of the Idle Air Adjust Spacer service kit, part number F2PE-9F939-AA. The kit corrects…
• Ford Racing Idle Setting Procedure & TPS Adjustment Instruction Sheet IS-1850-0156
  This is a one-page Ford Racing Performance Parts instruction sheet (document number IS-1850-0156) describing the official idle setting procedure for Ford EFI engines, typically performed after installing a mass air…
• Ford Motorsport F-Series Mass Air MAF Install Instructions Page 9 - Final Steps
  This is page 9 of 9 of the Ford Motorsport F-Series Mass Air (MAF) conversion installation instructions, document IS-M-9000-T51*, dated 1/21/93. It covers the final steps (Steps 21-33) of the installation: reconnecting…
• Ford Motorsport F-Series Mass Air Conversion Instructions - Page 8 of 9 (M-9000-T51)
  This is page 8 of 9 of the Ford Motorsport (FMS) F-Series Mass Air installation instructions, document IS-M-9000-T51*, dated 1/21/93. It covers steps 9 through 20 of the mass air conversion procedure. Step 9 instructs…
• Ford Motorsport F-Series Mass Air Install Instructions Page 7 - EEC-IV Swap
  This is page 7 of 9 of the Ford Motorsport F-Series Mass Air installation instructions (document IS-M-9000-T51*, dated 1/21/93). It concludes the '1992 & Later EEC-IV Removal' section with Steps 20-22: loosening the…
• Ford Motorsport F-Series Mass Air Install Page 6 - EEC-IV Removal 1987-1992
  This is page 6 of 9 from Ford Motorsport Performance Equipment's installation instructions (document IS-M-9000-T51*, dated 1/21/93) for the F-Series Mass Air conversion kit. The page covers removal of the factory…
• Ford Motorsport F-Series Mass Air Install Instructions Page 5 - Intake Removal
  This is page 5 of 9 of the Ford Motorsport (Ford Racing / FMS) F-Series Mass Air conversion installation instructions, document number IS-M-9000-T51*, dated 1/21/93. It covers Steps 12 through 19 of the mass air meter…
• Ford Motorsport F-Series Mass Air Install Instructions Page 4 - EGR & Vacuum
  This document is page 4 of 9 of the Ford Motorsport (FMS) F-Series Mass Air Installation Instructions, document number IS-M-9000-T51, dated 1/21/93. It covers Steps 8 through 10 of the mass air flow (MAF) conversion…
• Ford Motorsport F-Series Mass Air Install Instructions Pg 3 - Upper Intake Removal
  This document is page 3 of 9 of the Ford Motorsport (Performance Equipment) F-Series Mass Air installation instructions, document number IS-M-9000-T51, dated 1/21/93. This page covers the 'Upper Intake Removal' portion…
• Ford Motorsport F-Series Mass Air (MAF) Install Instructions Page 2 - Kit Parts
  This document is page 2 of 9 of the Ford Motorsport (Performance Equipment) F-Series Mass Air installation instructions, document number IS-M-9000-T51, dated 1/21/93. It lists the tools required for installation: a…
• Ford Motorsport F-Series Mass Air (MAF) Kit Install Instructions M-9000-T51 Pg 1
  This is page 1 of 9 of the Ford Motorsport (SVO) F-Series Mass Air conversion kit installation instructions, document IS-M-9000-T51, dated 1/21/93, which also covers kits M-9000-T50, T52, and T53. The introduction…
• Ford Bronco Instrument Cluster Bezel Removal Diagram - Dash Trim Panel
  This document is a single black-and-white service manual illustration depicting the removal (or installation) of an instrument cluster bezel from a vehicle dashboard. The only text in the image is the callout label…
• Ford Bronco Headlight Switch Knob & Shaft Removal Diagram - Hooked Tool Method
  This document is a single service illustration showing how to remove the headlamp knob and shaft assembly from a headlight switch. The line drawing depicts a hand holding the headlamp switch knob and shaft, with two…
• Tuff Stuff Ford PMGR Starter Install Instructions 6124 6131 6132 - Wiring
  This document is an official Tuff Stuff Performance Accessories installation instruction sheet for Ford PMGR (permanent magnet gear reduction) starters, part numbers 6124, 6131, and 6132 (Type A & B). It warns that…
• TPS test procedure: about 5.0 volts reference from the PCM, 3.0 to 4.0K ohms with throttle closed, and about 350 ohms at wide open throttle.
• 1988 Ford Bronco Clutch Pedal & Master Cylinder Pushrod Removal - Manual Page
  This is a photographed page from a Haynes-style automotive repair manual covering clutch pedal assembly removal and installation, most likely for a Ford truck/Bronco application. The visible numbered procedure steps…
• Speed Bleeder steps: open the Russell Speed Bleeder screw 1/4 to 1/2 turn, pump brakes until air is purged, then close the valve and repeat at each wheel.
• MSD Noise Filter Capacitor PN 8830 Install Diagram - MSD 6AL Ignition Wiring
  This document is an installation instruction page for the MSD Noise Filter Capacitor, part number 8830, used with MSD ignition control boxes such as the MSD 6AL (part no. 6420). It provides three installation steps…
• TFI-IV stator test step listing resistance specs between TFI module terminals, with replace stator or replace TFI actions and ohmmeter hookup.
• 1990 Ford Bronco Instrument Cluster Troubleshooting 60-9 - Voltmeter & Warning
  This document is page 60-9 of a Ford service manual section covering the Instrument Cluster, presenting a continuation of a troubleshooting hints table. The table is organized into three columns: Condition, Possible…
• 1990 Ford Bronco Instrument Cluster Troubleshooting Hints (60-8) - Gauges & Tach
  This is page 60-8 of a Ford service manual section covering the Instrument Cluster, presenting a Troubleshooting Hints table with three columns: Condition, Possible Cause, and Action. It covers five fault conditions: a…
• Ford Racing Idle Setting Procedure Instruction Sheet IS-1850-0156 - TPS & IAC
  This is a one-page Ford Racing Performance Parts instruction sheet (document number IS-1850-0156) describing the official idle setting procedure for Ford EFI engines. It presents nine sequential steps that must be…
• Service procedure decal: do not clean inside throttle body or adjust throttle set screw in CCW direction, see service manual.
• 1995 Ford Bronco TR Sensor Testing - E4OD & 4R70W Pinout, Resistance Chart
  This page (149-9) from a 1995 Ford Bronco service reference covers component testing of the Transmission Range (TR) Sensor, also known as the neutral safety/manual lever position switch. It shows pinout diagrams for…
• Drum Brake Star Wheel Adjuster Procedure - Retracting Shoes to Remove Drum
  This document is a two-panel excerpt from an automotive service manual showing how to retract drum brake shoes via the star wheel adjuster when a brake drum will not slide off. The left panel (figure 2.5b) is a…
• Ford EEC-IV Relay Box Location Diagram - Left Fender Apron (Bronco/F-Series)
  This document is a single illustrated figure (numbered 16.60) from an automotive service manual showing the mounting location of the early model Ford EEC-IV relay box. The line drawing depicts the left-hand (L.H.)…
• 1990 Ford Bronco Horn & Cigar Lighter Troubleshooting Hints - EVTM Page 44-3
  This document is page 44-3 of a Ford electrical and vacuum troubleshooting manual (EVTM) covering the Horn and Cigar Lighter circuits, uploaded as applicable to a 1990 Ford Bronco. It presents a 'Troubleshooting Hints'…
• Ford E4OD Transmission Solenoid Body Connector Installation - Service Procedure
  This document is a single page (or excerpt) from a Ford service procedure covering the E4OD automatic transmission solenoid body. It shows step 16 of a reassembly/installation procedure: the technician is instructed to…
• Ford TFI-IV / DI Ignition Coil Supply Voltage Test Diagram - Coil (+) Terminal
  This document is a single illustration (figure 7.23) from an automotive service manual showing how to measure the ignition coil supply voltage on a Ford TFI-IV or DI (distributor ignition) system. The line drawing…
• TFI-IV / DI Ignition Coil Secondary Resistance Test Diagram - Ford Bronco
  This document is a single illustrated figure from an automotive service manual, labeled '7.13 Measuring the ignition coil secondary resistance (TFI-IV or DI)'. The line drawing shows a Ford-style E-core (TFI) ignition…
• Ford TFI-IV / DI Ignition Coil Primary Resistance Test Diagram
  This document is a single illustrated figure (numbered 7.10) from an automotive service manual showing how to measure the primary resistance of an ignition coil used with TFI-IV (Thick Film Integrated) or DI…
• Ford TFI E-Core Ignition Coil Test Light Diagnosis - Coil Negative TACH Lead
  This document is a single illustrated service procedure (figure 7.3) showing how to perform an initial diagnosis of a Ford TFI (Thick Film Ignition) E-core ignition coil using a 12-volt test light. The line drawing…
• Ford I.S. 6628A sheet 6 of 6: slide heat shrink tubing over the splice and heat until hot melt wax shows at both ends. Heat gun only, no hair dryer or flame.
• Ford I.S. 6628A sheet 5 of 6: strip 1-1/2" and 3/4" of insulation, twist and solder with RMA solder, then form the splice for sealing.
• 1995 Ford MLP/TR Sensor Connector Swap - Wire Crimp Splice Instructions (Pg 4)
  This document is sheet 4 of 6 from Ford instruction sheet I.S. 6628A, titled "1995 MLP/TR Sensor Connector Assembly Swap Instructions," copyright 1996 Ford Motor Company, Dearborn, Michigan (dated 11-96). The page…
• 1995 Ford MLP/TR Sensor Connector Swap Instructions - I.S. 6628A Sheet 3 of 6
  This document is Sheet 3 of 6 of Ford instruction sheet I.S. 6628A, titled "1995 MLP/TR Sensor Connector Assembly Swap Instructions," copyright 1996 Ford Motor Company, Dearborn, Michigan, dated 11-96. The page…
• Ford instruction sheet I.S. 6628A, sheet 2 of 6: steps 6-12 for swapping the 1995 MLP/TR sensor connector, including red pin separator and .2 hr labor.
• 1995 Ford MLP/TR Sensor Connector Swap Instructions - E4OD Kit F5TZ-7A247-AVMR
  This document is Sheet 1 of 6 of Ford Instruction Sheet I.S. 6628A, titled '1995 MLP/TR Sensor Connector Assembly Swap Instructions' (© 1996 Ford Motor Company, Dearborn, Michigan, dated 11-96). It covers kit…
• Ford Racing starter instructions, steps 17-20: #12 gauge wire to the starter relay "A" post, plus a hand-drawn sketch of the owner's solenoid terminals.
• Vacuum Advance Distributor Tune-Up & Timing Adjustment Procedure - Ford Bronco
  This document is a two-part service procedure for setting up and tuning a vacuum-advance distributor ignition system. The first section, "Basic Start-Up and Adjustment," lists required tools (distributor wrench, timing…
• Ford PIP/SPOUT Wiring Repair for DTC 211 Miss/Stall - F-150 4.9L Diagrams
  This document is a set of three service illustrations supporting a PIP/SPOUT wiring repair procedure for vehicles experiencing intermittent Diagnostic Trouble Code (DTC) 211 and/or an engine miss or stall condition…
• Ford Fuel Line Quick-Disconnect & Spring-Lock Coupling Tools Diagram (T90T-9550)
  This document is a service reference diagram covering Ford fuel line quick-disconnect (spring-lock) fittings and the special tools used to separate them. The top-left panel illustrates a fuel line disconnect tool in…
• Ford Bronco F-150-350 E-150-350 Parking Brake Cable Tension Limiter Adjustment
  This scanned service manual page describes the initial adjustment procedure for the parking brake cable tension limiter on Ford light trucks (F-150 through F-350, Bronco, and E-150 through E-350), to be used when a new…
• 1994-Up Ford 5.0L Spark Plug Wire Routing Diagram & Firing Order 1-3-7-2-6-5-4-8
  This is a two-panel Ford service illustration showing spark plug wire routing for the 1994-and-later ('94-up) 5.0L V8 engine. The left panel shows an overall engine view with the distributor cap assembly, the wire to…
• 1987-93 Ford 5.0L Spark Plug Wire Routing Diagram & Firing Order 1-5-4-2-6-3-7-8
  This document is a factory-style illustration set showing the spark plug wire routing for 1987-1993 Ford 5.0L V8 engines. The left panel shows an overall engine view identifying the -12A012- suppressor wire assembly…
• Ford EEC-IV TFI Module Diagnostic Worksheet - Ignition No-Spark Test Steps
  This document is a 14-step diagnostic worksheet for testing the Thick Film Ignition (TFI) module and related ignition components on Ford EEC-IV engine management systems. It lists required tools (12V test light, DVOM…
• Ford RFI Suppression Capacitor Install - Ignition Coil 4.9L 5.0L 5.8L 7.5L MFI
  This document is a four-panel illustrated service reference showing the installation of an RFI (radio frequency interference) suppression capacitor to the ignition coil on Ford MFI (multiport fuel injection) engines…
• Yukon Gear & Axle break-in procedure for new ring and pinion sets, covering mileage and towing steps, plus maximum tire diameter by axle style.
• Service manual page for Flashout Code 5, system dumps too many times in 2WD, with steps 5a-5c: rear brake check and 4WD switch signal at pin 5.
• Service manual page 12-31-24 for Flashout Code 2, step 2c: checking the RABS valve isolation solenoid, with circuit 599 repair or valve replacement.
• Service manual page 12-31-23 for Flashout Code 2, open isolate circuit, with steps 2a and 2b: pin 13 and RABS valve ground pin resistance checks.
• How to Find TDC for Distributor Installation - Ford Firing Order & Valve Overlap
  This document is an illustrated tutorial on locating Top Dead Center (TDC) for distributor installation on an engine. It explains that the crankshaft makes two rotations (and passes two TDCs) for each rotation of the…
• Ford Bronco RABS Rear Antilock Light Flashes 9 Times - Code 9 Sensor Test
  This is a scanned page (section 12-31-32, 'Rear Antilock Brakes: Diagnosis and Testing') from a Ford service manual covering diagnostic Flashout Code 9, indicated when the yellow REAR ANTILOCK warning light flashes 9…
• Folding Instructions, page 11 of 334-310: curtain removal and storage, then five steps to fold the soft top down onto the tailgate.
• Page 10 of the Specialty Top Co. Bronco soft top instructions (334-310): fitting the top, side curtains and rear curtain in six steps.
• Page 9 of the Specialty Top Co. Bronco soft top instructions (334-310), steps 6 to 9: tailgate aluminum, weatherstrip, tailgate install and bow mounts.
• Ford Bronco Soft Top Fabric Installation & Folding Instructions - Pg 8 334-310
  This document is page 8 of a soft top installation instruction set (marked "Pg 8 334-310"), scanned from a printed manual and uploaded to a 1991 Ford Bronco gallery. It contains two illustrated sections. The first…
• Soft Top Install Figure 7 - Fabric Channel Edge & Bow Positions (Pg 7 334-310)
  This document is page 7 (Figure 7) of an installation instruction sheet for a soft top conversion kit, apparently covering how the fabric top attaches to a pickup-style truck body. A central line drawing of a truck cab…
• Ford Bronco Soft Top Install Pg 5: Tailgate Aluminum & Bows (Figures 5, 5A-5B, 6)
  This is page 5 of a multi-page installation instruction set (document number 334-310) for a soft top kit, showing assembly of the tailgate aluminum rails and the top bows. Figure 5 illustrates joining the two tailgate…
• Ford Bronco Soft Top Cab Aluminum Rail Install - Figure 4, Screw Order (334-310)
  This document is page 4 of a multi-page installation instruction set (document number 334-310) showing the left side cab aluminum installation for a soft top / cab conversion kit. The main illustration depicts the rear…
• Page 2 of soft top instructions 334-310 covering front body aluminum, bow mount and cab aluminum installation, with item numbers and Figure 2-4 references.
• Page 1 of Specialty Top Co. instructions for the 1980-1991 Bronco convertible top, part #334-31X: tools, install tips, body aluminum steps and Figure 1.
• How to Bleed Drum Brakes - Wheel Cylinder Bleeding Sequence & Procedure (Manual)
  This is page 9-13 of a vintage factory service manual's Brakes/Service section covering hydraulic brake bleeding procedures. Section (c) gives the correct sequence for bleeding wheel cylinders, left front, right front…
• Ford Bronco RABS Valve & Speed Sensor Removal - Rear ABS Service Procedure
  This is a scanned page from a Haynes-style repair manual covering the Rear Anti-lock Brake System (RABS) and four-wheel ABS on Ford Bronco/F-Series trucks. It includes two illustrations: figure 15.16 showing the RABS…
• Shop manual pages for Mazda M5OD five-speed manual overdrive transmission disassembly and assembly, with numbered steps and special tool drawings.
• Shop manual driveshaft diagnosis and testing pages showing vibration checks, companion flange indexing and hose clamp driveshaft balancing.
• Ford Fuel Line Spring Lock Coupling Disconnect & Fuel Supply Manifold Removal
  This is a scanned page from a Ford service manual covering the removal of the Fuel Supply Manifold Assembly and the procedure for disconnecting and connecting fuel line spring lock couplings. The removal steps direct…
• Service manual figure 5.73: checking reference voltage to the EVP with a multimeter reading 4.91, with VREF, EVP SIG and SIG. RTN connector pinout.
• Ford EVP Sensor Test - EGR Valve Position Sensor Resistance & Pinout Diagram
  This is a scanned page from an automotive service manual (likely a Haynes-style repair guide) showing a diagnostic test procedure for the EGR Valve Position (EVP) sensor. The page includes a photograph (figure 5.81) of…
• 2018 Can-Am Maverick X3 Max Turbo R Boost Solenoid Warranty Repair Invoice
  This document is a dealership service invoice/repair order for a 2018 Can-Am Maverick X3 MAX XRSDPS Turbo R side-by-side (Platinum Satin color). The customer brought the unit in to diagnose a running issue and check…
• Ford Idle Air Adjust Spacer Kit - When to Install for Throttle Body Sludge
  This document is a single paragraph excerpt from a Ford service procedure describing when the Idle Air Adjust Spacer service kit should be installed. It explains that the kit is intended solely to correct sludge…
• Ford Bronco Tailgate Glass & Window Regulator Removal - Haynes Diagram
  This is a photographed page from a Haynes repair manual covering the Ford Bronco tailgate glass and window regulator. The page contains a large exploded diagram labeled as showing Bronco tailgate glass and regulator…
• Ford Bronco Clutch Linkage & Pedal Assembly Removal - Haynes Manual Pages
  This is a photographed two-page spread from a Haynes-style repair manual covering clutch service procedures for a Ford truck/Bronco. The left page finishes a hydraulic clutch pushrod adjustment procedure (Steps 7-16)…
• Ford E4OD Cooler Line Check Valve Ballcheck Inspection Diagram (TB-3929-A)
  This document is a single-page technical illustration (labeled "VIEW A", figure reference TB-3929-A) showing a cutaway view of a transmission cooler line fitting containing a check valve. The drawing identifies two…
• Ford emission label for a 1990 5.8L EFI truck: set timing to 10° BTDC with SPOUT unplugged, ASF-32C plugs gapped .042-.046, SAE 10W-30 SG oil.
• Ford Alternator Clocking Diagram - 3:00, 7:00 & 11:00 Regulator Terminal Positions
  This document is a small illustrated diagram showing alternator "clocking", the rotational orientation of an alternator's rear housing relative to its mounting. Three rear-view drawings of the same alternator are shown…
• Ford Distributor Gear Removal Diagram - Press & Splitter Plate Setup (B4139-A)
  This is a single-page line-art illustration from a Ford service manual, uploaded as 'Distributor Gear Removal.jpg' to a 1990 Ford Bronco gallery. The drawing shows a distributor shaft positioned in a press: the…
• Ford Distributor Gear Installation Using 1/2" Socket - Service Diagram B4142-A
  This document is a single-page illustration from a Ford service procedure showing distributor gear installation. The main line drawing depicts a distributor standing upright (cap end down on a bench block or support)…
• Ford RFI Suppression Capacitor Install at Ignition Coil - 4.9L 5.0L 5.8L 7.5L MFI
  This document is a scanned Ford service illustration (figure code K20720-B) showing the installation of an RFI (radio frequency interference) suppression capacitor assembly onto the ignition coil for four different MFI…
• Locating TDC for Distributor Installation - Ford V8 & I6 Valve Overlap Method
  This document is an illustrated service procedure explaining how to locate Top Dead Center (TDC) for cylinder #1 when installing a distributor. It explains that the crankshaft makes two rotations (two TDCs) per…
• Ford Bronco Camper/Trailer Circuit - Fuse Links F, G, P & Troubleshooting (Pg 109)
  This is page 109 of a Ford electrical/vacuum troubleshooting manual (EVTM-style), covering the Camper/Trailer circuit. The 'How The Circuit Works' section explains that power for the camper or trailer circuits is…
• Ford Bronco Floor Pan Patch Panel Repair Diagram - Metal Tabs & Screws
  This is a simple hand-drawn diagram (not a factory service document) illustrating a floor pan patch panel repair method. The drawing shows a large rectangle labeled "floor" representing the vehicle floor, with a…
• Multi-Pass Fillet Weld Sketch - 3-Pass Bead Sizes & Sequence Diagram
  This document is a hand-drawn, handwritten sketch illustrating a multi-pass fillet weld procedure for joining a vertical plate to a horizontal plate at a T-joint. The drawing shows two rectangular pieces of material…
• Page 12 of 334-310: seven care tips for the vinyl top and windows, plus the Specialty Top Co. 90-day warranty against defects.
• Page 12 of 334-310: seven care tips for the vinyl top and windows, plus the Specialty Top Co. 90-day warranty against defects.
• Looking into a splined hub: red notes say the spacer/washer must be removed, and the C-clip in its groove must come out first to free it.
• Sun visor labels with Ford overdrive transmission economy and performance instructions and the four-wheel drive shift procedure for locking hubs.
• Build Your Own Fly-Powered Matchstick Model Aircraft - Illustrated Joke Guide
  This document is not an automotive reference at all, it is a humorous illustrated step-by-step guide titled "Build Your Very Own Powered Model Aircraft." The comic-style instructions describe building a tiny model…
• MSD addendum FRM30874 (revised 11/11): apply the enclosed camshaft and lifter lubricant liberally to the distributor drive gear before installing it.
• Ring Gear Pattern & Backlash Bulletin 5717-A with 0-1" Micrometer - Ford Bronco
  This image is a photograph of a precision 0-1 inch outside micrometer (0.0001" resolution, digit-counter type, marked 'inch.') laid on top of a printed technical bulletin identified in the footer as Bulletin 5717-A…
• Frame Rail Section Weld Placement Diagram - Outside, Flush & Inset Splice Options
  This is a simple hand-drawn illustration (not a factory document) showing three possible methods for welding a new section onto a vehicle frame rail. A color-coded legend defines the elements: black lines represent the…
• Ford Bronco U-Joint Forces Diagram - Rotation, Compression & Tearing Force
  This document is a hand-drawn (digitally sketched) diagram illustrating the forces acting on a universal joint (u-joint) cross, uploaded as a service/reference sketch for a 1989 Ford Bronco. The drawing shows a u-joint…