This is a list of component documentation specifically for car guys. Here's a handy search engine, giving pricing and availability from findchips.com.
Here is a link to Motorola's search engine.
Chip Search Directory. Prof. Dr. Matthias Lindner sent me this master link to a bunch of component search engines, which may serve European users better.
Be sure to look over at the Electronic Theory Documentation page, too. If you need to know how big a particular IC package is, try this list.
NLA indicates that this part is no longer available, but the documentation is kept around for reference.
DB Connectors Positronic waterproof DB connectors ( 13 pages) 1367 PWM injector driver with flyback control ( 13 pages) NLA 2916 Stepper motor driver ( 8 pages) 4N25 6-pin Optocoupler ( 13 pages) 54LS161A Synchronous 4-bit binary counter ( 12 pages) AD594 AD594/595 thermocouple interface ( 8 pages) ATS665 Gear Tooth Hall Sensor ( 18 pages) CD4022BC Decoded counter ( 8 pages) CPU08 CPU08 Central Processor Unit Reference Manual (244 pages) DRV103 TI PWM solenoid driver ( 15 pages) Ford Ford Knock Sensor Data (153k jpeg) FN3601 HIP9010 knock sensor filter ( 12 pages) NLA GTN Honeywell GTN Gear Tooth Hall Sensors ( 2 pages) IPS0151 Fully Protected Power MOSFET Switch ( 12 pages) IRFZ34N Power MOSFET ( 8 pages) IRG14C40 Ignition IGBT with on-chip clamps ( 11 pages) L482 SGS-Thomson Hall Effect Ignition Controller ( 11 pages) L4907F Automotive Alternator Voltage Regulator ( 11 pages) L497 SGS-Thomson Hall Effect Ignition Controller ( 11 pages) LM1815 Adaptive variable reluctance (VR) sensor amp ( 8 pages) LM1949 Injector Drive Controller ( 12 pages) LM2907 Frequency to voltage/tachometer circuit ( 18 pages) LM2931 Low Drop Out (LDO) voltage regulator ( 18 pages) LM2940 Low Drop Out (LDO) voltage regulator ( 19 pages) LM9011 Electronic ignition interface ( 16 pages) LM9044 Lambda sensor interface amplifier, also 9040 ( 7 pages) M68HC05TB Understanding Small MCUs 6805 (332 pages) M68HC08RGAD HC08 reference manual addenda ( 16 pages) MC68HC908GP32 MC68HC908GP32 Technical Data (410 pages) MC68HC908QT4 MC68HC908QT4 Data Sheet (240 pages) MAX232 RS-232 transceiver chip ( 36 pages) M7000 Altera Max 7000 Programmable Logic Devices ( 62 pages) MC33094 Advanced ignition controller with hall iface ( 16 pages) MC33993 Integrated 22-input serial out switch ( 28 pages) MC34151 On-Semi High speed dual MOSFET drivers ( 12 pages) MC34151 Motorola High speed dual MOSFET drivers ( 10 pages) MCP2551 MCP2551 High-Speed CAN Transceiver ( 22 pages) MGP15N35CL On-Semi Ignition IGBT 15A, 350V ( 12 pages) MLX90217 Melexis Hall-effect Cam Position Sensor ( 8 pages) MMA2300D Surface Mount Accelerometer ( 8 pages) MPX4115A 1.15 BAR solid state MAP sensor ( 9 pages) MPX4250A 2.50 BAR solid state MAP sensor ( 8 pages) MPXH6300A 3.04 BAR solid state MAP sensor ( 8 pages) MPXH6400A 4.00 BAR solid state MAP sensor ( 8 pages) MAP 122238861 GM 3.00 BAR solid state MAP sensor ( 1 page ) PIC16C84 PIC 1684 specifications (109 pages) PIC16C84_prog PIC 1684 programming specification ( 14 pages) RPN Honeywell RPN Rotary Position Hall Sensors ( 2 pages) S12CPUV2 Motorola HCS12 CPU Reference, V2 (458 pages) TEC99 TEC II manual ( 73 pages) TIM08RM HC08 timer interface module (198 pages) TIP111 TIP110/111/112 Power Darlington transistors ( 4 pages) TIP12x TIP120/121/122/125/126/127 Darlingtons ( 8 pages) UC3709 UC3709 high-speed FET driver, see also MC34151 ( 6 pages) US5881 Melexis US5881 Hall-effect Switch ( 8 pages) VB921 VB-921 Coil driver ( 7 pages) X9317 Digitally controlled potentiometer ( 12 pages) 68HC908GP32MSE1 GP32 mask set errata ( 2 pages)
AN936 Mounting and testing MPX MAP sensors ( 6 pages) AN991D Using SPI between MCUs ( 28 pages) AN1218 HC05 to HC08 Optimization ( 56 pages) AN1219 68HC08 math routines ( 28 pages; zip w/sw) AN1222 Waveform synthesis on HC05/08 ( 10 pages; zip w/sw) AN1274 HC08 SCI with various clocks ( 20 pages) AN1646 Noise and pressure sensors ( 7 pages) AN1752 Data structures for 8-bit MCUs ( 32 pages) AN1770 In-circuit flash programming of GP20 ( 60 pages; zip w/sw) AN1775 Using ADC for digital input ( 12 pages) AN1783 MCU oscillator startup parameters ( 8 pages) AN1791 Using the QADC64 queued ADC ( 52 pages) AN1818 SCI software for 16 bit timer ( 16 pages) AN1820 Inter-IC 2-wire communications ( 8 pages; zip w/sw) AN1831 On-chip flash programming routines ( 40 pages) AN2093 Efficient C-code for HC08 ( 16 pages) AN2105 Power, clock and noise reduction for GP32 ( 12 pages) AN2159 HC08 ignition controller ( 8 pages; zip w/sw) AN2183 Using flash as eeprom on gp32 ( 48 pages; zip w/sw) AN2317 Cheap access to MON08 and programming ( 28 pages) AN2353 eTPU Programming Essentials ( 8 pages) AN2554 Interrupt handling on HCS12 processors ( 6 pages) AN4006 CDI ignition using HC05/08 processors ( 8 pages) AN9770 HIP9010 knock sensor applications ( 18 pages) NLA EB349 RAM data retention on some HC MCUs ( 8 pages) EB366 Flash programming of GP32 ( 16 pages) EB389 Capturing long input events ( 12 pages) HC08EXSW HC08 software for delays, SCI, timers and such ( zip w/sw)