Car doesnt like timing change?

[Kris]

Yesterday, I had the timing changed, from stock (10*), to 13*. Ran great all of yesterday.

Today, however, is not. It seems when I'm at a light, or shut the car off, when warm, it is breaking up throughout the RPM's. After driving it for a little bit, this goes away, but not entirely.
When cold, it runs fine. I realize it's 92 degrees out today, and was about 80something yesterday night.

It also has 94 octane in it now.

Car is a 94gt with a 95 cobra motor, t5.

...and yes, i took out the spout connector before and plugged it back in after.

 

[Paul]

Change it back.

 

[Matts50]

Try putting it back to 10* and see what happens.

 

[Kris]

Someone told me that if you change the timing in 94/95s it will compensate, and you cant change timing.

Is this true?

 

[Matts50]

I don't think the ECU can't compensate for something like that. I could understand electrical items, butoOnce the timing is locked in, it's locked in manually. Correct?

 

[Win]

Change it back and see what happens. If it is still having problems check your Harmonic Balancer and see how it looks. Could need to be changed.

 

[Paul]

The ECU can indeed compensate, but only within the parameters programmed into the fuel/timing tables. If you adjust timing one way or another, the amount of flexibility in those tables is more limited.

 

[cntchds]

Also, the reason for removing the spout connector is so that the computer won't compensate. While the connector is in, however, it will do whatever it can to continue sending spark at the same time as the distributor was originally set.

 

[Kris]

So basically, for 94/95s, you cant adjust timing? Its only 3 gegrees more. I know of some fox body guys running 16 without detonation.

 

[dutch]

So basically, for 94/95s, you cant adjust timing? Its only 3 gegrees more. I know of some fox body guys running 16 without detonation.

You can.

 

[CC'S95GT]

yes you can adj timing. some guys are running 14*. i'm running 12* with 89 octane.
you'r breaking up problem might be the dizzy going out.

 

[Kris]

yes you can adj timing. some guys are running 14*. i'm running 12* with 89 octane.
you'r breaking up problem might be the dizzy going out.

It has a new distributor. Less than a month old..

 

[94 Sn-95GT]

The computers are set to advance a certain amount lets just say 30 for the sake of discussion. Base is 10* for a total of 40*. You set base to 12. total is now 42*