Hey guys I have a stock 86 v6 third gen, love it to death, wish i didnt have to drive it every day but thats not much to complain about.

Lately I have been noticing a interesting problem with my car. If you have ever retrieved your trouble codes from your car's computer/hard drive/memory unit what have you, your familiar with the sound of the computer almost starting up and then displaying the flashes related to the codes themselves.

Lately when my car has been running for about 5 minutes I can hear the hard drive starting up.

Any ideas what the source of this could be?

The only adjustment to my car in recent history has been installing a kenwood alpine mp3 player and I do suspect I may have a electrical short because I blew a fuse not that long after I got that new kenwood installed.

Any help would be greatly appreciated,

thanks!!!

 

There is no "hard drive" on the vehicle, per se. The executable program is held on ROM and the variable portion of the executable is on PROM. The variable data generated and retained as the vehicle is operated is held on battery-backed RAM. There is no other data storage than these memory chips, no moving parts, and you should not be able to hear anything except perhaps a faint noise from the CPU clocking crystal when the ECM is powered on. Even that would be only in the absence of any background noise. If you are hearing any other noises from the ECM there may be a problem with one or more of the outputs overloading the Quad drivers or discrete output transistors, such as those used to drive the injectors and IAC stepper coils.

It may be possible that what you are hearing is a cooling fan in the audio head unit. I get that from a couple different units I have, including a factory CD unit in a newer vehicle.