Adjusting Idle And Co

Porsche 928 Air Cleaner Straps

Detach air hose at diverter valve and insert a suitable plug. 6. Connect CO level tester and separate tachometer according to instructions of manufacturer. 6. Connect CO level tester and separate tachometer according to instructions of manufacturer. Engine in perfect mechanical condition. Ignition timing set correctly. Adjustments must be made as quickly as possible, to prevent excessive heat in the intake ports. 4. Install air cleaner upper section and air intake hose. 5. Run engine to...

Location Of Relays And Electronic Controls In

Porsche 928 Fuse Box Diagram

The central fuse relay plate is accessible after removal of a cover in footwell of front passenger's side. Relay for electric seat's forward movement is located underneath the seat on the adjusting frame. Fuses are numbered consecutively from left. 1o right and are designated S 1 through S 34 on the current flow diagram. S3- License plate light, engine compartment light S 4 - Switch light fog headlights, tail fog light, hazard light switch, rear window-wiper, rear window defogger , light for...

Removing And Installing Door Window And Regulator

Porsche Window Regulator

Adjust door window door trim panel removed , that slides on guide tube are accessible. 2. Now unscrew slides and detach window lifting tube at top. 3. Pull off inside window recess seal, then tilt and remove door window glass. Unscrew or detach guides arrow in upper door recess to improve accessibility see figure to right . 4. Unscrew window regulator from inside door panel arrows , pull off electric wire plugs from motor and remove window regulator through large opening in inside door...

Removing And Installing Clutch

Porsche 928 Lower Body Brace

Disconnect ground strap at battery. 2. Jobs required additionally beginning with 1984 models Remove TDC sensor on clutch housing by taking off air cleaner, loosening screw and pulling TDC sensor out of clutch housing. On cars with LH-Jetronic pull speed reference mark sensor for electronic ignition out of crankcase upper section while turning back and forth, after loosening the screw. 4. Unscrew clutch slave cylinder, remove clamp on clutch hose holder and take out cylinder with line...

Troubleshooting Central Warning System

The central warning system monitors the following 1 9 7 8 Models Any deviation from specified condition or a defect will be displayed by the central warning lamp flashing or coming on, depending on priority, the acknowledgement button and the pertinent indicator lamp. Beginning with 1979 models the acknowledgement button comes on together with the central warning lamp. The central warning unit contains a bulb check function to check the light bulbs. All indicator lamps, the central warning lamp...

Removing And Installing Rear Spoiler

Membrane Porsche 928

1.Using new screws, attach hinges to spoiler. 2.To protect paintwork, cover tailgate with adhesive tape. l.Open tailgate, remove spoiler securing screws and lift spoiler off tailgate. 2.Place spoiler on a soft surface, unscrew securing screws from hinges and remove hinges from spoiler. Printed in Germany - XIII, 1986 Removing and Installing Rear 66 - 25 4.When the new adhesive membrane is applied, the holes in the membrane must align exactly with the holes in the tailgate. 6.To adjust,...

Adjusting Idle Speed And Co

Engine in perfect mechanical condition. Make adjustments as quickly as possible to avoid excessive heat in intake ports and consequently wrong CO values. 2. Disconnect auxiliary air pump hose on air pipe and insert a suitable plug in open air pipe e. g. rubber grommet for doors, Part No. 999.703.163.40 . 4. Run engine to operating temperature oil temperature approx. 80 to 90 C 176 to 194 F . Use Special Tool 9122 to measure oil temperature. Intake air temperature 15 to 35 C 59 to 95 F. 5....

Removing And Installing Fuel Cooler

Jetronic Porsche 928 1982

Discharge air conditioner as described in Group 87 of Repair Manual 928. Conform with safety precautions for handling refrigerants. a First unscrew right refrigerant line coupling completely, while holding on hexagon of line. b Unscrew both fuel line connections on fuel cooler, while holding on cooler each time. c Unscrew bracket for fuel cooler. d Unscrew left refrigerant line coupling, while holding on hexagon of line. 3. Take off upper air cleaner housing and filter element. Pull off hose...

Removing And Installing Rear Side Trim Panel

Porsche 928 Rear Seat Removal

Disconnect and remove luggage compartment cover, tool plate, floor mat, spare wheel cover, edge guard on B pillars, parking brake cable cover, emergency seat cushions and backrests. 2. Remove seat belt on side member and seat well at outside arrows . 6. Make sure trim panel engages in proper holders in area of wheei house. 3. Remove escutcheon for seat belt and grab handle arrows . 4. Remove screws arrows and pry off trim panel at top with a suitable tool clips and pull forward slightly....

Troubleshooting Automatic Transmission

Note If transmission oil is black and smells burnt or there is an unusual large amount of metal burrs in oil pan, either repair or replace transmission. Condition Transmission slips in all selector lever positions Correction 1, Check modulating pressure, adjusting if necessary. If not adjustable, check movement of modulating pressure control valve. Clean modulating pressure safety valve in shift valve housing upper section, 2. Check whether vacuum line from intake branch to vacuum box is...

Diagnosis Troubleshooting

The airbag system is continuously monitored by a diagnosis unit in the control unit. If a fault occurs, it is indicated by a warning lamp in the instrument cluster. In the event of a fault, the central warning lamp and this warning lamp come on. In cars for the USA, the fasten seat belts symbol also lights up. If non-activated airbag units have to be removed, they must be ignited electrically before being disposed of see Page 68-15 . The airbag warning lamp comes on for ap- prox. 5 seconds when...

Diagnosis troubleshooting alarm system

1995 993 Vale Covers

The alarm control unit is diagnosable. It can be read out only with System Tester 9288. The menu includes the following functional groups For some of the faults, two types of causes must be distinguished - The fault displayed is an actual fault that has to be remedied. The fault displayed is a fault condition that has been caused deliberately, e.g. by leaving the open glove compartment open. Troubleshooting requires that the person performing the tests - is familiar with the location of...

Removing And Installing Outside Mirror

Pin Wire Side Access Plug

Pry off clips on mirror glass with a putty knife on backplate and disconnect contact plugs on glass carefully. 4, Unscrew fillister head screw on mirror base so that mirror can be removed with the liner. 2. Unscrew 3 screws through holes in backplatE, take off foam rubber part and pull off wire plugs. 1. Pry off clips on mirror glass with a putty knife on backplate and disconnect contact plugs on glass carefully. 2. Unscrew 3 screws through holes in backplatE, take off foam rubber part and...

Checking Transmission Operation

Special Tool Sporsche 928

Prior to making repairs on an automatic trans- B - Transmission Fluid Level mission, troubleshoot transmission as instructed below and with help from the following tests. B - Transmission Fluid Level The specified fluid level is extremely important for proper operation of automatic transmission, so that following test must be carried out with great care. All jobs, which require that engine runs, should only be carried out with selector lever in N or P and parking brake applied. Exceptions...

Location Of Components

Porsche 928 Jetronic

7 Control units ignition LH 9 Temperature sensor I 10 Fuel line 15 Speed reference mark sensors 17 TDC sensor test connection 18 Fuel pressure test connection CENTRAL ELECTRIC POWER SUPPLY FOR LH ELECTRONIC IGNITION 1 - Electronic ignition relay VIII power supply for electronic ignition and LH control 2 - LH-Jetronic relay XVI power supply for LH control unit and air flow sensor 3 Fuel pump relay XVII power supply for fuel pump, auxiliary air regulator and fuel 4 Fuse no. 13 fuel pump,...

Testing the engine temperature sensor

Fuel Line Repair 911 Porcshe

The switching point must be just before full njtjon Qfi Disconnect plugs from the EZK control unit and the LH control unit. Connect an ohmmeter between terminal 13 and terminal 5 on the LH control unit plug. Short-circuit to ground Short-circuit to positive Break in the circuit Defective engine temperature sensor In the event of an error, check with reference to the circuit diagram. When measuring the resistance of the engine temperature sensor, always measure between the contact lug and the...

Disassembling And Assembling Transmission

Assembling And Disassembling

Always counterhold on interior shift rod with a suitable tool when driving out pins and keys. 2. Remove differential see page 39 - 201 . 3. Remove shift rods, shift forks and locks. Always counterhold on interior shift rod with a suitable tool when driving out pins and keys. 7. Pull out input shaft and bearing cap with Special Tools 9140 and 9148 Always first remove countershaft and lower countershaft to bottom of transmission. 4. Pull out clamp for reverse gear with a suitable pliers. 5....

Tire pressure warning system RDK diagnosis General

Porsche Diagnose 928

- The system tester 9288 will be used for PORSCHE DIAGNOSIS from Mod. 89 onwards. PORSCHE DIAGNOSIS can be used for all systems capable of self diagnosis. Capable of self diagnosis means the control unit can detect, store and output system errors. Read out tire pressure loss event memory from control unit version R02 on introducing during 1991 model year . As the number of systems capable of self diagnosis will be increasing in the forseeable future, diagnosis of the relevant system will be...

Porsche 928 Psd Abs Failure

Vehicles with PSD Printed in Germany XXXV, 1995 Possible fault displays via system tester 9288 DTC Fault type System allocation 11 Transverse lock valve PSD 12 Lateral acceleration sensor - PSD short circuit discontinuity 13 Lateral acceleration sensor - PSD signal implausible 14 Transverse lock - deviation PSD 15 Control unit - defective ABS PSD 21 Wheel speed sensor, front left ABS PSD 22 Wheel speed sensor, front right ABS PSD 23 Wheel speed sensor, rear right ABS PSD 24 Wheel speed sensor,...