Electronic Speed timing signal problem? Solutions? Corrective actions?

Question

What are the corrective "actions" for a computer code problem of electronic speed timing signal problem?
I checked the timing as per the instructions on the sticker tag located on the top of the radiator and with the tan wire (black strip) disconnected the timing was a couple of degrees off........but with the tan/black stripped wire re-connected the timing was way off.
If there is a top notch mechanic out there that can guide me through the process to correct the possible problems.....I follow instructions real good.......Thanks.

Answer 1

i own a repair shop,,and have been at it for 36 yrs,maybe i can help,the timing is supposed to advance its self back up once the wire is re-connected,this is probably why it looked way off,,you have to let the engine reach full operating temperature when setting it,and it is going to be way off once the wire is back on,,you go by the mark at the top and set it to the recommended degrees,,and once it is set and you hook the wire back up it will have a trouble code in it,,remove the battery cable and let it stay off for at least a minute,,and make sure its the negative cable,,now you need to re-check it again because there,s a slight chance it may still be off a few degrees,,if it checks ok,,then your fine,,but all this has to be done at full operating temperature,,anything Else,and the computer will be on stand by mode,,or factory set mode,and the timing will be off as much as 4 degrees,if you follow all of this it will be fine,,good luck with it,i hope i have helped.,,PS be sure and clean the bottom pulley off and mark the number of degrees that your going to use so it will be visible under the light.

Answer 2

Your car uses the computer to control nearly everything engine related, hence the term Powertrian Control Module (PCM)
Adjusting the base ignition timing requires that the computer NOT attempt to control the ignition timing. The PCM uses the timing input to control many things other than the timing of the fire. the PCM tries to adjust timing to correct for temperature, load, as well as idle speed, with and without the A/C engaged.
In order to adjust the timing, you have to, in effect tell the PCM "Go sit in a corner and shut up until you are needed". By disconnecting the EST wire, that is exactly what occurs.
When you adjust the timing to spec, base, then reconnect the EST wire, after the engine has been shut off for at least 30 seconds, on restart the computer expects to see the base timing within a certain spec. It then begins to correct for various conditions, and will probably advance the timing by another 10-20 degrees. This is the "Corrected" timing, and should not concern you. That is the way it is supposed to work.

Good Luck

Answer 3

Might disc. the battery and wait 10 min. and then put the cables back on and let it reboot itself.

Answer 4

could help you if i had more info on vehicle