VW MKII A2 MK2 Golf Jetta Fox Service Manual - VAGLinks.com

More documents

Recommendations

Info

4C•4 Fuel and exhaust systems - K-Jetronic fuel injection - 16 valve engines 3.1 Checking continuity of idling stabilisation control valve wiring 8 Check that the mixture (CO reading) is as specified. Temporarily block off the exhaust tailpipe not fitted with the analyser probe while making the check. If necessary, turn the mixture screw as required after removing its cap. A special key is necessary in order to turn the screw but a suitable tool may be used as an alternative. Note that the screw must not be depressed or lifted and that the engine must not be revved with the tool in position. 9 Refit the crankcase ventilation hose. If the CO reading increases, the engine oil is diluted with fuel and should be renewed. Alternatively, if an oil change is not due, a long fast drive will reduce the amount of fuel in the oil. 10 Reconnect the wiring plug and remove the test instruments. Note that after reconnecting the wiring plug, the stabilisation system will return the idling to the specified speed. 3 Idle speed stabilisation system - testing 3 1 Check that the stabilisation control valve buzzes when the ignition is switched on. If not, use an ohmmeter to check the valve continuity after pulling off the connector (see illustration). 2 Similarly, check the system temperature sender resistance at the following temperatures (see illustration): a) At 20°C - approximately 1000 ohms b) At 60°C - approximately 250 ohms c) At 100°C - approximately 75 ohms 3.2 Checking temperature sender resistance 3 If the system fault cannot be traced using the previous test then check all associated wiring. If necessary, renew the control unit which is located behind the centre console. 4 The operations of the control valve may be checked by connecting a multi-meter to it. With a tachometer connected, run the engine (hot) at idle speed and note the control current. Now pinch the hose shown (see illustration) and check that the current rises. Release the hose, increase the engine speed to 1300 rpm and actuate the throttle valve switch. The control current should drop below 430 mA. With the wiring disconnected as described in paragraph 6, Section 2, the control current should be constant between 415 and 445 mA. 4 Overrun cut-off valve - testing 2 1 With a tachometer connected, run the engine (hot) at 2500 rpm. Operate the throttle valve switch and check that the engine hunts (ie. its speed fluctuates). If not, let the engine idle, disconnect the valve wiring and connect a voltmeter to the terminals as shown (see illustration). Zero volts should be registered. 2 Increase the engine speed to 4000 rpm, then quickly close the throttle. At 1400 rpm, battery voltage should be indicated. 3 If necessary, renew the control unit which is located behind the centre console. 4.1 Checking overrun cut-off valve (1) 5.1 Checking diaphragm pressure switch 1081 VW Golf & Jetta 3.4 Checking idle stabilisation valve by pinching hose (arrowed) 5 Diaphragm pressure switch - testing 2 Pull the wiring connector from the switch, then connect an ohmmeter to the switch terminals (see illustration). With the engine idling, the reading should be infinity. Quickly open and close the throttle and check that the resistance drops briefly then rises to infinity. 6 Throttle valve switch - testing 2 1 Pull the wiring connector from the throttle valve switch. 2 Using an ohmmeter, check that with the throttle closed there is zero resistance between terminals 1 and 2 but a reading of infinity between terminals 2 and 3. With the throttle open, the readings should be reversed (see illustration). 3 To adjust the switch, insert a 0.10 mm feeler blade between the throttle lever and stop (see illustration), then loosen the screws and move the switch towards the lever until the contacts are heard to click. Tighten the screws on completion and remove the feeler blade. 6.2 Throttle valve switch connector terminals See text for terminal identification
6.3 Throttle valve switch adjustment 1 Nut 2 Gaskets 3 Exhaust manifold 4 Downpipe and front silencer 5 Heatshield Fuel and exhaust systems - K-Jetronic fuel injection - 16 valve engines 4C•5 8.1 Exhaust system components 6 Nut 7 Nut 8 Intermediate silencers 9 Front of car 10 Preload dimension = 5.0 mm 7 Inlet manifold - removal and refitting 3 The inlet manifold is in two sections. When refitting the upper section, fully tighten the nuts securing it to the lower section first before attaching it to the rear support bracket. 11 Rubber mounting 12 Rear silencer a = 5.0 mm b = 12.0 mm c = marks 1081 VW Golf & Jetta 8 Exhaust system - inspection, removal and refitting 3 The exhaust system incorporates four silencers together with twin downpipes and tailpipes (see illustration). The manifold/downpipe flange is of standard type with a gasket. Refer to Section 20 in Part A of this Chapter for the relevant procedures. 4C
Page 1 and 2:
Chapter 1 Routine maintenance and s
Page 3 and 4:
CO content (%) 1.05 litre carburett
Page 5 and 6:
The maintenance intervals in this M
Page 7 and 8:
Maintenance - component location 1
Page 9 and 10:
Maintenance - component location 1
Page 11 and 12:
6 Fluid leakage and engine electric
Page 13 and 14:
9 The engine will turn over more ea
Page 15 and 16:
13 Wipe clean the distributor cap a
Page 17 and 18:
18.13 Using a chain wrench to unscr
Page 19 and 20:
25.3a Bend each brake hose to check
Page 21 and 22:
32.4b . . . loosen front mounting n
Page 23 and 24:
Chapter 2 Part A: Engine repair pro
Page 25 and 26:
1.3 litre: Inlet opens . . . . . .
Page 27 and 28:
difficulty is experienced, it may b
Page 29 and 30:
9 Cylinder head - removal 3 1 If th
Page 31 and 32:
11 Cylinder head - dismantling and
Page 33 and 34:
14.13a Withdrawing crankshaft rear
Page 35 and 36:
21 Crankshaft and bearings - examin
Page 37 and 38:
29.2 Fitting centre main bearing sh
Page 39 and 40:
35.9 Camshaft sprocket (later type)
Page 41 and 42:
Chapter 2 Part B: Engine repair pro
Page 43 and 44:
4.5 Two lengths of metal used to lo
Page 45 and 46:
9 Oil pump - refitting 3 Refitting
Page 47 and 48:
guide the cylinder head into positi
Page 49 and 50:
Chapter 2 Part C: Engine repair pro
Page 51 and 52:
Stem diameter: Inlet . . . . . . .
Page 53 and 54:
1 General information The 1.6 and 1
Page 55 and 56:
26 The engine/gearbox unit is now r
Page 57 and 58:
9.6 Intermediate sprocket timing ma
Page 59 and 60:
and tappet is required. Label the c
Page 61 and 62:
13.1 Sump, oil pump and oil filter
Page 63 and 64:
17 Oil filter - renewal Refer to Ch
Page 65 and 66:
30.3a Fitting flanged type centre m
Page 67 and 68:
etween the camshaft and intermediat
Page 69 and 70:
Chapter 2 Part D: Engine repair pro
Page 71 and 72:
1 General information The 1.8 litre
Page 73 and 74: Chapter 3 Cooling, heating and air
Page 75 and 76: 1 Radiator 2 Fan ring 3 Expansion t
Page 77 and 78: 2.2 Removing expansion tank cap 2.4
Page 79 and 80: Refitting 8 Refitting is a reversal
Page 81 and 82: 8.3a Pulling free heater/ventilatio
Page 83 and 84: 11 Air conditioning system compress
Page 85 and 86: Chapter 4 Part A: Fuel and exhaust
Page 87 and 88: Carburettor-1.6 litre Pierburg/Sole
Page 89 and 90: 3.6 Air cleaner components - 1.6 an
Page 91 and 92: 6.1 Fuel reservoir location - 1.3 l
Page 93 and 94: etaining clip and then disconnect t
Page 95 and 96: Fuel and exhaust systems - carburet
Page 99 and 100: 15.10 Idle speed (A) and mixture (B
Page 101 and 102: 15.53 Checking choke valve gap (wid
Page 103 and 104: 17.10 Accelerator pump check prepar
Page 105 and 106: 18.3a Unscrew the bolts . . . 18.3b
Page 109 and 110: Chapter 4 Part B: Fuel and exhaust
Page 111 and 112: Fuel supply The fuel pump operates
Page 113 and 114: 4 Switch off all electrical consume
Page 115 and 116: 12.5 Cold acceleration enrichment s
Page 117 and 118: 17 Pressure relief valve - removal,
Page 119 and 120: Fuel and exhaust systems - K-Jetron
Page 121 and 122: Chapter 4 Part C: Fuel and exhaust
Page 123: 1 To ignition control unit 2 Intake
Page 127 and 128: Chapter 4 Part D: Fuel and exhaust
Page 129 and 130: 1.0b Mono-Jetronic system inlet man
Page 131 and 132: distance of 4.0 mm by the operating
Page 133 and 134: Chapter 4 Part E: Fuel and exhaust
Page 135 and 136: 3.4 CO analyser and connecting pipe
Page 137 and 138: feed line attachment to the gravity
Page 139 and 140: Chapter 4 Part F: Fuel and exhaust
Page 141 and 142: A Front crankcase ventilation valve
Page 143 and 144: 12.1 Fuel pump and filter component
Page 145 and 146: Chapter 5 Part A: Ignition system -
Page 147 and 148: 1.1b Contact breaker ignition syste
Page 149 and 150: 7.4 Crankshaft pulley mark (A) timi
Page 151 and 152: Chapter 5 Part B: Ignition system -
Page 153 and 154: Ignition system - transistorised ty
Page 155 and 156: 6.4a TDC blanking plug - manual gea
Page 157 and 158: 7.5 Vacuum unit removal 7.7 Hall se
Page 159 and 160: Chapter 5 Part C: Ignition system -
Page 161 and 162: 6.2 Signal check method from Hall s
Page 163 and 164: Chapter 5 Part D: Starting and char
Page 165 and 166: 4.3 Battery retaining clamp and bol
Page 167 and 168: Chapter 9 Braking system Contents B
Page 169 and 170: 3 Use an Allen key and unscrew the
Page 171 and 172: 3.18 Rear brake caliper components
Page 173 and 174: 4.15 . . . followed by the outer wa
Page 175 and 176:
13 Refit the hydraulic pipe and tig
Page 177 and 178:
19 This method is particularly effe
Page 179 and 180:
Chapter 10 Suspension and steering
Page 181 and 182:
1081 VW Golf & Jetta 1.1 Front susp
Page 183 and 184:
3.2 Front suspension camber adjustm
Page 185 and 186:
8.4 Removing rear suspension strut
Page 187 and 188:
11.3b Removing steering wheel centr
Page 189 and 190:
14.4 Steering tie-rod bellows and r
Page 191 and 192:
1081 VW Golf & Jetta Suspension and
Page 193 and 194:
Removal 2 To remove the pump unit,
Page 195 and 196:
Chapter 11 Bodywork and fittings Co
Page 197 and 198:
Repair of rust holes or gashes in b
Page 199 and 200:
hand. A largish screwdriver will ju
Page 201 and 202:
14 Door trim panel - removal and re
Page 203 and 204:
15.3 Removing interior door handle
Page 205 and 206:
22.4 Front bumper bracket securing
Page 207 and 208:
6 Renew any retaining screw locatio
Page 209 and 210:
28.9 Sunroof adjustment dimensions
Page 211 and 212:
31.8 Front seat guide fixing - from
Page 213 and 214:
Chapter 12 Body electrical systems
Page 215 and 216:
k) Never use an ohmmeter of the typ
Page 217 and 218:
6 Headlamp range control - removal
Page 219 and 220:
4 If the indicators do not function
Page 221 and 222:
17.2a Instrument panel unit compone
Page 223 and 224:
Component testing Voltage stabilise
Page 225 and 226:
3 Ease the wiper arm from the spind
Page 227 and 228:
29 Windscreen wiper linkage - remov
Page 229 and 230:
1081 VW Golf & Jetta Wiring diagram
Page 231 and 232:
1081 VW Golf & Jetta Wiring diagram
Page 233 and 234:
Relays (typical) 1 Vacant 2 Intake
Page 235 and 236:
1081 VW Golf & Jetta Diagram 3 Ligh
Page 237 and 238:
1081 VW Golf & Jetta Diagram 7 Brak
Page 239 and 240:
1081 VW Golf & Jetta 12 Diagram 12
Page 241 and 242:
Page 243 and 244:
1081 VW Golf & Jetta Diagram 20 Ele
Page 245 and 246:
Page 247 and 248:
Page 249 and 250:
Page 251 and 252:
Page 253 and 254:
Page 255 and 256:
Page 257 and 258:
Page 259 and 260:
Page 261 and 262:
1081 VW Golf & Jetta Diagram 57 Glo
Page 263 and 264:
Page 265 and 266:
Page 267 and 268:
show all

VW MKII A2 MK2 Golf Jetta Fox Service Manual - VAGLinks.com

Create successful ePaper yourself

Delete template?

Save as template?