The gas bars, does this happen to anyone else?

[CTScott]

That's exactly correct. The fuel level sender uses the unregulated battery voltage, so the change from 14.x when the alternator is whizzing to 12.x when you're sitting there cranking the tunes with the engine off makes a difference of up to a full bar.

[mazilla]

Originally Posted by CTScott

That's exactly correct. The fuel level sender uses the unregulated battery voltage, so the change from 14.x when the alternator is whizzing to 12.x when you're sitting there cranking the tunes with the engine off makes a difference of up to a full bar.

Same question, different thread...can we regulate that voltage somehow? I don't like how much it bounces around my gauge.

[CTScott]

Originally Posted by mazilla

Same question, different thread...can we regulate that voltage somehow? I don't like how much it bounces around my gauge.

Yes. You would have to add two 12 volt regulators. One for the ECU-B and one for the MET feed to the cluster.

[mazilla]

Originally Posted by CTScott

Yes. You would have to add two 12 volt regulators. One for the ECU-B and one for the MET feed to the cluster.

My gauges sometimes show 15.5-16.5 at the battery, I'd like to stabilize it @ 14 if I can. Could you drop an example link on the part I would need?


Thank you for all the

[CTScott]

Originally Posted by mazilla

My gauges sometimes show 15.5-16.5 at the battery, I'd like to stabilize it @ 14 if I can. Could you drop an example link on the part I would need?


Thank you for all the

You need to stabilize it low, not high. A regulator doesn't bring the voltage up, it will just take a higher voltage and bring it to a lower stable voltage. The part you want is a simple LM7812 voltage regulator (radio shack usually stocks them). It is a 3 pin device with in, ground and out. Normally you would add two capacitors when using one, but in this case, because you are just regulating a supply that really doesn't need to be regulated you can skip the caps.