Fuel
Injection related
FI
2.3 LH/EZK
ecu, pinning and diag connection 
FI 2.3 LH/EZK ecu, how to remove the ecu's
FI 2.2 LH / EZF ecu information (pre 1987 model)
FI
ecu problems
FI
ecu rebuild info
FI
ecu how it learns
FI
ecu LH part numbers
FI ecu LH part numbers and eprom numbers
FI
ecu trouble
shooting
FI
ecu repair suppliers
FI ecu repair (928-ecu-repair)
FI ecu repair (Achim Mueller/Rich Andrade)
FI
ecu repair and FAQ
FI
ecu fuel pump relay dead
FI ecu placing Performance Chips
FI ecu power flow
FI ecu Chip Tuning
FI ecu Connector pins mismatch (RHD)
FI ecu LH and EZK removal steps
Fuel
Injection
ecu operation info
Fuel Injection LH / EZK ecu background
Fuel Injection LH2.2 and EZF (pre-928S4)
Fuel Injection K series / CIS (links)
Fuel
Injector Info
Fuel
Injector Removal help
Fuel Injector Service
Fuel Injector seal kit
Fuel Injector rebuild DIY
Fuel Injector cleaning using Sta-Bil
Fuel Injector tester schematic
Fuel Injector Wiring
Fuel Injectors clicking
Fuel Injector specs
Fuel Injector Alternatives
Fuel Injector fitting
Fuel Injector leak test
Fuel Injection vapor lock
Fuel cooler
Fuel Specifications (RON/ROZ/E10)
Fuel Quality, badly running
Fuel vapor EVAP system
Fuel
Rail disassembly
Fuel Pressure data from Spec Books
Fuel
Pressure
Fuel
Pressure
Fuel Pressure dampers
Fuel Pressure regulator, how it works
Fuel
Pressure, mixture
Fuel Pressure port adapter
Fuel Octane and Configuration Coding plug
Fuel Hose DIY
Fuel Hose repair DIY
Fuel distributor seal kit K-Jetronic
Fuel mixture Rich, Lean or Stoichiometric
Fuel Startup
mixture
O2
sensor reading
O2
sensor wiring / removal
O2 sensor 928 1986 model
O2
sensor failure and diagnose
O2
sensor operation /Replacement
O2
sensor controlling Emission and Fuel Economy
O2 (lambda) sensor FAQ
O2 lambda
Sensor* operation and legal inspection
O2 adjustment on non CAT LH equipped cars
O2 Bosch Oxygen Sensor
CO measuring port
CO adjustment pre 1987 model
CO and fuel
pressure specs S4 GT GTS
How to build a Lambda and MAF
meter
How
to prevent Detonation
Vapor
Lock
Warm up regulator pre-S4 928 models
Warm-up valve operation
MAF
related
Air Flow Meter
MAF removal
MAF background and repair
MAF repair / LMM repair service
MAF Adjusting
the MAF meter
Malfunctioning
MAF
MAF
and O2 sensor loop with the FI computer
MAF defects and K&N filters
MAF datasheet
MAF diagnose
How to build a Lambda and MAF
meter
Early 928 airflow sensor
MAF 6 pin connector repair
Temp
and Cooling related
Cooling system overview
Overheating,
flaps, fins, thermostat
Cooling
Airflow and trouble shooting
Overheating trouble shooting
Cooling fan speed control
Cooling fan Visco coupler (early 928)
Cooling fan Visco clutch
silicone fluid pre-S4 models (from Toyota)
Cooling fan Visco fluid refill
Engine overheats at idle
Temp
and Over temp problems
Temp
Gauge
Hard
cold start (temp sensor)
Engine
overheated, won't start
Thermostat
parts and installation
Thermostat operation in a 928
Thermostat bridge seal repair
Erratic
temperature control
White
smoke, elbow fitting at right head leaking
Radiator Picture and dimensions
Radiator side tanks fix
Radiator side tanks repair / core exchange
Radiator replacement copper core
Radiator types en dimensions
Radiator temperature sensor
Radiator coolant guide sleeve
Temp
I and II Sensor
Temp
II Sensor problems
Temp Sensors
Temp Sensor coolant
Temp
and cooling flaps control
Temp readings (actual measurements)
Flap control schematic
Flap and fan engine cooling
design
Coolant reservoir
Coolant reservoir removal
Coolant
level sensor
Coolant level sensor seal and cap
Coolant temp sensor
Coolant Pressure Sensor
Coolant flush and options
Coolant drain and change
Coolant erratic alarm warning
Coolant Temp alarm troubleshooting
Coolant boils
Air
bubbles in Cooling system
Cooling
System Stop Leak ok?
Coolant types and mixing
Coolant status (PH, anticorrosion) test
Coolant BASF Glysantin
Coolant Valvoline Zerex
Dexcool
and <Green to Orange> conversion
RedLine
Water Wetter
After cooling when engine is shut down
Huge amount of white smoke
Waterbridge removal
Water pump
Water Pump mounting holes layout
Water
Pump and Tensioner Bolts
Water Pump differences
Water Pump bearing
Water Pump new style
Water Pump disaster
Water Pump rebuild DIY
Water
Pump impeller
Water
Pump pictures
Water Pump bolt broken
Water Pump Broken
bolt and broken tap
Water Pump gasket fitting
Engine
Mounts
Engine
mounts repair
Engine
mounts seizes
Engine mounts replacement, no crossbar removed
Engine mounts by Anchor
Engine mounts by Volvo
Engine mounts & seal for oil pan
Engine mounts replacement step by step
Idle
Idle
Stabilizer Valve picture and numbers
Idle Stabilizer: two versions
Idle Stabilizer, how it works
Idle
speed surge
Idle speed surge problems and WD40 trick
More
on Idle speed surge problems
Engine
Stalling
Unstable Idle diagnosing
Idle troubleshooting
Fast
Idle speed
Battery disconnected system adaption necessary
Idle too high
Rich fuel mixture?
Idle & CO Adjust on LH2.2 models
Idle speed reduction
explained
The
Vacuum system (engine)
Diagnosing
the Vacuum system
Vacuum
leaks diagnose
Flappy connection and vacuum line routing
Vacuum hose routing 1985-1986 and 1987
Vacuum limiter early 928
Aux
Air
(smog) pumpAir
pump / smog pump
Air pump removal
Air pump Rebuild
Miscellaneous
All
the filters and their replacements
Aluminum welding and repair
Compression
test
Broken
Bolt extraction
Bent Strut brace - '89
Bearing equivalents
Engine lifting or supporting the engine
Engine warm up wear and lubrication
Engine numbers and location
Engine cover new style Emissions
and understanding them
Front
Engine Tear down
Thread repair Timesert and Heli Coil
OEM ersatz teile (Bosch u.a.)
Replacing
the foam under the hood
Removing
the head while engine in the car
Rev
limits of the 928 engines
Silicone
Sealant
Engine fire - fuel leaks
Engine bottom cover cracked
Engine bay decals
Annual exhaust gas inspection
Engine keeps running with ignition off
Belts
(not timing belt)
Belt
sizes and specs
Belts tension settings
Gates info on
Belts
Ignition Monitoring Relay
IMR or ZKü (German)
Limp
mode
Limp mode diagnosis
Limp mode (Running only on 4 cylinders) Ignition monitoring relay, Limp mode
Ignition Circuit Monitoring Relay
Ignition Monitoring Relay Internals
Ignition Monitoring Relay Thermo Elements
Ignition Monitoring System diagnosing
Ignition Monitoring System special coding function
Ignition monitoring and Broken Central Tube Shaft
Engine detailed pictures
928 S4/GT/GTS engine cleaned up
928 S3 engine
928S4 Was Ist Unter Der Haube 4
PFF
928S4WasIstUnterDerHaube4PFF-A2
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Timing
Belt
related
Timing Belt quick check
Timing
Belt Tension warning light
Timing
Belt Tension warning delay
Timing Belt Tension indicator lamp troubleshooting
Timing Belt Tensioner
Timing Belt Tensioning cnt'd
Timing Belt Tensioner "Kundendienst Info"
Timing Belt
Tensioner- how it works
Timing Belt Tensioner - adjustable
Timing Belt Tensioner pivot arm bushings
Timing Belt
Tension Tool
Timing Belt Tension Tool 9131-944_Instructions
Timing
Belt Tension measuring
Timing
Belt Tension adjusting made easy
Timing Belt specs
Timing
Belt tips
on replacing
Timing Belt alternator move trick
Timing
Belt and Tensioner system (by Wally)
Timing
Belt
replacement trick
Timing
Belt
for dummies (78-84)
Timing
Belt
shopping list for a 928GTS
Timing Belt replacement 928 GTS step by step
Timing Belt
procedure for a 1986
Timing
Belt job essentials Porsche 928
Timing Belt replacement by John Pirtle
Timing Belt Resources by Bill
Ball
Timing Belt replacement step by step
Timing Belt replacement, Tensioner, seals and more
Timing Belt Water
Pump replacement early 928
Timing Belt Don'ts
Timing
Belt failure & cam sprocket wear
Timing Belt Rollers
Why can you only turn the engine in one direction?
TDC
position / 45degree position
TDC
position indicator explained
TDC
position locating: a method
TDC timing and advance explained
Re-aligning
the cams to the crankshaft
Water
pump and Tensioner Bolts
Removal
of harmonic balancer
S4
Fan Shroud
S4
Fan Shroud more on removing
Flywheel lock
Starting
Problems
Starting basic operation step by step
Starting (electrical) sequence
928EngineControl by
Rich Andrade
Engine start but dies over 1400 rpm
Engine slowly starting
Crank
Crank
bearing 2/6 failing due to Oil starvation
Crank bearing 2/6 failure root cause analysis
Crankshaft
pulley bolt
Crankshaft front side
Crank seal replacement
Crank end/play check
Thrust Bearing
Thrust Bearing
failure theory
Thrust Bearing Failure
Thrust Bearing
Failure and Flex Plate pre-load
Thrust Bearing
play check
Thrust
Bearing dramatic wear
Thrust
Bearing / torque tube failure
Thrust Bearing early diagnose
Thrust Bearing symptoms and diagnose
Central tube proc crankshaft bearing clearance A/T
Torque Tube clamp alternative (TBF related)
Flexplate investigation
Flexplate clamp migration: more ideas
Flexplate balanced
Flexplate clamp new design
Flexplate clamp 3 lobe version
Loosening a Loctite'd Torque Tube Clamp
Checking rear clamp on the torque Tube
Cross drilled Crank pictures
Crank position sensor
Crank or Flywheel lock
Crank oiling, oil level and level sensor
Rods and special XZN (conrod) nuts
Accu sump oil (pressure and prime) solution
Problems of lubrication rod bearings
Pistons 928 GTS
Vibration damper
Engine lower half pictures
Camshaft /
Valves
Cam
gear positioning and T-Belt
Cam
gear timing adjustment
Cam wheel sprocket wear
Cam
and valve timing data
Cam
shaft seal replacement
Cam
Timing info
Cam Timing degrees per tooth
Cam Timing quick check
Cam Timing compression relationship
Cam Timing (928 four valve) for humans
Cam Timing alignment tools
Cam Timing PK32VR 32V_tool
Cam Timing PK32VR Bumpstick
Cam Timing PK32VR-M Manual
Cam Timing PK32VR quick info
Chain Tensioner
Chain Tensioner and guides
Chain Tensioner pads on a 944 (similar to 928)
Chain Tensioner death
rattle
Noisy
lifters
Noisy
lifters/ Oil check valve cleaning
Lifters apart
Noisy lifters/ camshaft oil feed plug gone
Noisy Lifters from oil plug open at cam end
Lifters repair Hydrostössel repair
Lifters / Tappets cleaning
Valve
knocking when cold
Valve
Clatter or Low Octane level (pre-detonation)
Valve Cover removal
Valve (Cam) cover removal and install
Valve Cover sealing
Valve cover and intake paint color
Valve cover bolt sheared off
Crank/cams breather modification
Crank/cams breather (ventilation)
Oil separator Provent
Oil separator baffle choices
Bent valves leak down test
Cylinders
Cylinder wall repair parts
Heads
Heads reinforced in 1989 model S4
Heads 32v from a 928 S4/GT/GTS
Head, intake and valve cover gasket kit
Head bolts 1990S4
Remove S4 heads with engine in the car
Intake
Intake
Manifold
Intake seal kit
Under
the Intake
Under the intake (pictures)
Getting
hands under the intake
Intake
removal tips
Intake removal instructions
Intake removal write up
Intake torque down specs
Intake gaskets
Intake open pictures
Intake Powder Coating Guide 87-95
Intake alternative to powder coating 87-95
Intake Decals
Intake modification for more air (HP)
Intake 928/928S spider model demo
Intake temperature sensor
Valve cover and intake paint color
Flappy
questions
Flappy
design and HP
Flappy
bearings
Flappy connection and vacuum line routing
Flappy vacuum solenoid
Air
Filter Cartridge
Air Filter Cartridge ... which way up?
Air Filter clogged, problems over 1100 rpm
Air
Filter comments and K&N debate
Oil under the intake
Throttle position switch
Throttle position switch test
Throttle switch test
Throttle cable assembly
Throttle quadrant bearings
Throttle
cables design and adjusting
Throttle butterfly valve (plate) adjust
Throttle Aux Air Valve (AAV)
Intake air tubes (hose) GTS remake
Intake air tubes (hose) alternative MB
Oil
Oil
Pressure
Oil Pressure sender
Oil Pressure low- plug open at cam end
Oil Pressure alarm
Oil Level sensor
Oil Level alarm modified
Oil thermostat for the Oil cooler
Oil thermostat cnt'd
Oil flow / path in engine
Oil in the crank, oil level and level sensor
Oil
Pan Gasket Ponderings
Oil
Pan Gasket alternatives
Oil
Pan Gasket pressure and replacement
Oil Pan Gasket make one yourself
Oil Pan Gasket replacement
Oil
Pan bolts Torque
Oil Pan insert in o/s model
Oil Pan differences
Oil Suction tube
Oil Drain plug
Oil Drain plug Fumoto
Oil Filler neck
Oil Cooler for engine oil
Oil Cooler lines leak
Oil Pump repair
Oil
Type choice
Oil Approvals by Porsche
Oil List Porsche approved 2006
Oil List Porsche approved 2008
Oil Castrol 10w60
Oil LiquiMoly 10w60
Oil a view on 10W60 oils
Oil Mobil_1_Product_Guide
Oil 0w-40 or 5w-50 or 20w-40 or 10w-60 ???
Oil consideration
Bruce Buchanan
Zinc and Phosphor additive ZDDP
Virgin Oil Analysis of Euro brands
Oil info (by Doug Hillary)
My Oil choices at annual replacement
Oil Tech, Choices and background
Replacing
the Fluids and Oils
Priming the oil pump and oil passages
GTS oil consumption
Oil consumption and compression - leak down test
Oil consumption - DIY oil separator
Oil separator Kuhn performance
Oil inhalation fix
Ignition
Plug
wires Plug
wire resistance
Ignition wires
Ignition wire DIY
Ignition wire sets
Plug wiring and ignition sequence
Ignition sequence visualized
Ignition sequence labels S4
Ignition sequence labels 16v 32v
Ignition power flow
Ignition Timing
Ignition Timing retarded
Spark
Plugs (extensive info)
Beru Spark Plugs info
Bosch spark plug
installation guide
Spark Plugs selection Bosch for GTS
Spark
Plus Appearance Analyze
Spark plugs stuck
Spark Plug anti seize?
Spark
Plugs thread lubrication information
Spark Plugs fitting and removing wrench
Spark timing and triggering
Distributors and rotors
Distributor green wire 1979-1986 16v
Rotor old style with rpm limiter
Ignition coils swapping out
Ignition
Coils and power stage
Ignition power stage
Retarding
during AT shifts
Ezk Brain placing Performance Chips
Ezk Chip Tuning
Ezf vacuum advance
Mis-Firing of non Firing ignition
Severe hesitation and rough idle
Sudden ignition cutouts for a brief moment
Engine running extremely violent and vibrating
Knock sensor blues
Knock sensor, loss of power
Knock sensor equivalents PORSCHE
928
Knock Sensor and Hall Sensor wiring Hall
(camshaft position) sensor
Hall sender
Hall sender replacement
Hall sender
Hall sensor test
TDC Crank position Sensor
TDC sensor removing |