Win i trun the key on if you hear the cooling fans It wont start until thay cut off. even win the engine is cold.
If cooling fans are running then the PCM is not powering up. Check or replace the PCM relay in the under hood fuse panel
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usually the engine is in fail safe mode when the cooling fans come on cold. Go to Autozone and ask for free computer scan for fault codes in the engine control processor.
Powertrain Control Module
The center of the EEC-V system is a microprocessor called the Powertrain Control Module (PCM). The PCM has a 104-pin electrical connector (Figure 1 below). The PCM receives input from sensors and other electronic components (switches, relays, etc.). Based on information received and programmed into its memory (KAM, etc.), the PCM generates output signals to control various relays, solenoids and actuators.
Keep Alive Memory (KAM) - The PCM stores information in KAM (a memory integrated circuit chip) about vehicle operating conditions, and then uses this information to compensate for component variability . KAM remains powered when the vehicle ignition key is off so that this information is not lost.
Hardware Limited Operation Strategy (HLOS) - this system of special circuitry provides minimal engine operation should the PCM (mainly the Central Processing Unit or EPROM) stop functioning correctly. All modes of Self-Test are not functional at this time. Electronic hardware is in control of the system while in HLOS.
HLOS Allowable Output Functions:
Spark output controlled directly by the PIP signal.
Fixed fuel pulse width synchronized with the PIP signal.
Fuel pump relay energized.
Idle Speed Control output signal functional.
HLOS Disabled Outputs To Default State:
EGR solenoids
No converter lock-up
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