1975 Pontiac Engine Wiring

American cars from 1968 to 1975 Chilton Book Company. < E < TJ C S c (0 2 D +» C 3. E il < □D C 2 (3 CO c <0 2 C. on all V8s. Pontiac sixcylinder engines use the Chevrolet system without any changes. On the EGR/TCS system, the distributor sparkEGR thermal vacuum valve senses the temperature of the air/fuel mixture inside the intake manifold. Below 62 °F, EGR is off and full vacuum advance is provided. When the temperature rises above 62 °F, EGR is on (operated by a port Chevrolet Vega 197177, Chevrolet Monza 197580, Pontiac Astre 197577, Pontiac Sunbird 197580, Oldsmobile Starfire 197580, Buick Skyhawk 197580 Chilton Book Company. Spark plug wire routing, 4151, California engines on the left; all others on the right 4

cyl..140 engine HEI distributor 197980 Rochester 2SE idle. TACHOMETER (BROWN WIRE) IDLE STOP SOLENOID VIEW A (ALL MANUAL TRANS.) TACHOMETER \| (BROWN WIRE) BLK/PINK STRIPE BATTERY 75 ft. lbs. (100 Nm) 7. 35 ft. lbs. (48 Nm) 4. Mount assembly Engine mountslate model V8 (VIN Y) 2. Raise the vehicle and support the transmission with a floor jack. 3. Install the motor mount bolts and torque to 55 ft. lbs. (75 Nm). 4. Install the cruise control bracket, if so equipped. 5. Install the transmissiontoengine attaching bolts to On air conditioned vehicles, connect the A/C compressor ground wire to the mounting bracket. Install the electrical connector to the compressor clutch, There was also an optional AM/FM stereo radio with digital

clock.(RPO UY8). If no radio was ordered, a radio accommodation package could be ordered with RPO UN9 that featured the wiring and antenna required for an aftermarket radio installation. The radio antenna was integral with the windshield in all 1974—1981 Firebird models equipped with a radio. A power antenna was also available with RPO U75. The standard steering wheel for all 1974—1976 Firebirds, referred to as a Second, make sure all wiring connections are clean and tight, not only at the battery, but also at the distributor cap, ignition coil, and at the electronic control module. Since the only change between electronic and conventional ignition systems is in the distributor component area, it is imperative to check the

secondary.ignition circuit first. If the secondary circuit checks out properly, then the engine condition is probably not the fault of the ignition system. To check the secondary ignition in. engine and aircondition ing. 1975:3069 Chevrolet Camaro, Nova; Pontiac Firebird; Buick Skylark. Apollo. 1975: 16,096 Pontiac Ventura. Oldsmobile Omega, Buick Apollo. 1975: 98,631 Chevrolet Monza 2+2, Buick Skylark hatchback, Oldsmobile Starfire. 1975: 1108 Pontiac Movement of driver seal may rub wiring ignition interlock and/or powerwindow wire harness, causing short and preventing engine starting or powerwindow operation Reroute wire harness. 1974: 9215 Remove fan shroud attaching screws and position shroud so it will swing up with engine.

On.197576 thermal Fig. 19 Front oil pan gasket overlapping side gaskets, V8265, 301, 350, 400, 455 engines models, remove switch from left cylinder head. 5. Make sure all hoses and wiring are routed properly to avoid bind when engine is raised. 6. Raise vehicle and drain crankcase. 7. On 197576 Firebird and Grand Prix, disconnect steering idler arm at frame and pitman arm from shaft. 8.American Cars from 1975 Through 1982. Hydraulic lifter L3/ J Pontiac V8 upper rear main bearing seal tool. and 455 V8s. A new 301 Pontiac V8 was introduced in 1977, as was a 231 Buick V6, 350 and 403 Oldsmobile V8s, and 305 and 350 Chevrolet V8s. In 1978 the engines were: V6 Buick, V8301 , 400 Pontiac, V8 305 Chevrolet, V8350 Buick and V8350, 403 Oldsmobile

..The Oldsmobile 350 diesel and the Pontiac 265 V8 were introduced in 1980. The Pontiac 265 is a smaller (pre1975). Refer to lllustration 1 1. 10 8 Detach the cable from the negative terminal of the battery. 9 Disconnect the high tension cable from the coil. 1 0 Detach the electrical connections from the coil primary and secondary terminals. (1975. and. later). Refer to lllustrations 11.14, 11.16 and 11.17 1 2 Detach the cable from the negative terminal of the battery. 1 3 Disconnect the battery wire and harness connector from the distributor cap. 14 Remove the coil cover screws and the Starting 1975, the intake manifold is integral with the cylinder head. This engine was last used in 1976. V8 Pontiac has used several different

V8s..Not all of them have been made by Pontiac Division. A rundown is as follows: 8260— used in the 197576 Ventura; made by Oldsmobile. 8301 — new in 1977; made by Pontiac 8305 — used in 197778 in several car lines made by Chevrolet 8307— used through 1973 in Ventura; made by Chevrolet 8350— used in 197576 Ventura