Once your engine has gone through 50 warm-up cycles in at least a 500-mile distance the PCM adaptive memory is set. The PCM will collect data for Adaptive Memory for the first 50 Warm-up Cycles.ДЄ warm-up cycle happens when all of the following conditions exist.ДЄ raise of 40F in engine temperature must occur ABOVE the engine temperature at start-upД®ngine Coolant Temp must reach at least 160 F. The Solid State Ignition (SSI) system features a solid state Ignition Control Module (ICM)/ignition coil assembly, Electronic Control Unit (ECU), distributor and engine speed sensor. 1988 Jeep Cherokee DISTRIBUTORS & IGNITION SYSTEMS Jeep Solid State Ignition.

When you get the engine up to operating temperature the PCM will start to collect data for the ГѓВўГўвЂљВ¬Г…вЂњAdaptive MemoryГѓВўГўвЂљВ¬Г‚Вќ. IGNITION SYSTEM - 4.0L W/SOLID STATE IGNITION (SSI). When you start the engine it will be running off a set of pre-programmed tables that come with the PCM from the factory. The PCM Adaptive memory has now been flashed, or erased from the PCM. Turn Ignition Switch to the ГѓВўГўвЂљВ¬Г…вЂњOnГѓВўГўвЂљВ¬Г‚Вќ position but DO NOT start the engine hi guys, im trying to use a fueltech ft 550 ecu with a jeep 4. (This is to discharge the PCM capacitors, which maintain the Adaptive Memory. This will cause the adaptive memory in the PCM to be erased and cause the PCM to go into Fast Learn Mode adaptive mode.Дisconnect the POSITIVE battery Terminal and touch it to ground for 30 seconds.

Please perform these steps exactly as they are written, in the order they are written. This very simple procedure will Erase the ГѓВўГўвЂљВ¬Г…вЂњAdaptive MemoryГѓВўГўвЂљВ¬Г‚Вќ stored inside the TJ PCM and allow a new ГѓВўГўвЂљВ¬Г…вЂњAdaptive MemoryГѓВўГўвЂљВ¬Г‚Вќ to be developed.ДЄfter performing this procedure the PCM will re-learn and store into Adaptive Memory your engines performance characteristics. To the best of my knowledge it isnГѓВўГўвЂљВ¬ГўвЂћВўt documented in any of the FSM. He called me back a week later and did indeed verify this procedure and what it does. I then verified it with a phone call to a Chrysler Engineer who had called me a year or so ago to ask about my experiences with a certain part on my TJ. This procedure first came to me from the folks at Avenger. Over time, the PCM Memory Tables become tuned to your engine. A-Team Performance AMC JEEP 232 258 4.0 4.2 6 CYL HEI DISTRIBUTOR 65K Volt BLUE. They are ГѓВўГўвЂљВ¬Г…вЂњadaptiveГѓВўГўвЂљВ¬Г‚Вќ, based on sensor readings, driving habits, engine performance and sensor tolerances. Shop for Edge Performance ECU Tuning & Gauges in Automotive Performance. These ГѓВўГўвЂљВ¬Г…вЂњmemory tablesГѓВўГўвЂљВ¬Г‚Вќ are the brains that keep the engine running at low emissions and peak economy across the RPM band during closed loop mode. These ГѓВўГўвЂљВ¬Г…вЂњoutputsГѓВўГўвЂљВ¬Г‚Вќ are controlled using the ГѓВўГўвЂљВ¬Г…вЂњinputsГѓВўГўвЂљВ¬Г‚Вќ received from all the sensors and then comparing these reading against a set of data tables burned into the PCM. The JeepГѓВўГўвЂљВ¬ГўвЂћВўs PCM performs several functions controlling Air Fuel ratios via Injector Bandwidth and Ignition Timing.

Jeep 4.0 ecu tuning