So since im not running a IAC valve I need to try to have as stable as a idle I can. Before the external regulator, Megasquirt was seeing 13v-13.6. So, I installed my regulator sanded paint down and grounded it on my firewall. I started the car and megasquirt displayed 14.2v-14.6v, I was ecstatic but then maybe a hour after of messing with my idle/tunning. I relized my voltage slowly started declining back to what it was. Anyone have a similar experience or know my problem?
#5646, "RE: External Voltage Regulator ?s" In response to Reply # 0
The external regulators are fairly temperature sensitive. As they heat up, the voltage drops. Depending on where you have it mounted it will be affected by heat soak.
#5647, "RE: External Voltage Regulator ?s" In response to Reply # 1
Dave why are you a genius? So I’m 100% sure that you are correct and that this is my problem. I work at 4am here in MASS where the temperature was about 15* degrees. At startup megasquirt displayed 14.6v and after my 25minute ride to work voltage was just about 14.2. Once I was out of work temps were up 25*degrees, initial startup was 14.6v and by the time I got home voltage was down to 13.6-13.8v. So Dave did you run an external vr? if so where? Or any ideas for placement?
