PURPOSE

Some customers of affected vehicles may experience illumination of the malfunction indicator lamp (MIL) with DTC 1320 stored in memory, or a drop in engine speed at idle. The Electronic Throttle Valve (ETV) may learn an incorrect position when the ignition switch is turned to the OFF position from the ON position without starting the engine.

If the vehicle is driven with this condition, the ETV mis-learns Idle Speed Control. As a result, the intake air volume is insufficient to achieve an initial idle target of 1,400 RPM, causing DTC P1320 to be set, or engine idle speed to drop.

This Technicial Service Bulletin advises the steps to reprogram the ECM with new parameters and to perform the ETV learning process.

AFFECTED VEHICLES

2008 Lancer Evolution X equipped with 5 speed manual transmission only built prior to VIN JA3AW86V08U049108

 

olds new

 

Sorry just figured I would share the information since I just had one of my techs look it up because we both have this issue. TSB release date is April 2008 so it can't be that old.

 

Thanks for this info. I've been having this problem and my vin is 043... no MIL yet but it's tried to die on me several times.

 

it's an issue. but from my understanding it could be because they were tuned rich to accept upgraded parts easier. the big question still lies on how the update will affect upgrades as compared to the original programming.

 

my x is a 048, and i have yet to experience any problems as of yet, going to give my local dealer a call tommorrow anyway, see whats the deal.