[T3] System Voltage and FI

[Bobsnotch at aol.com]

In a message dated 10/8/2011 9:59:06 P.M. Eastern Daylight Time,  
topnotch at nycap.rr.com writes:

System  voltage was around 13 and it used to be 14... but its been dragging 
below 13  lately so it was time for a regulator.  I found that the output 
line on  the old Bosch regulator was FRIED at the lug, probably due to some 
solder I  left on it when I jumped out the regulator for the T4 engine and 
the solder  squished out making the connection loose with time.  I also found 
the  diode under the regulator  open.

So I swapped in another unit I  checked out, that made things alot better 
but it died a few miles later,  probably that diode opening up also.

When Jim as told us all how  important system voltage is for the D jet BOY 
is he right!I finally put one of  the new electronic units on it as I needed 
to get down to Hershey that day,  NOW I have a full 14V on the highway and 
the hesitation off the line is  gone.  Gone also is the bad idle when the 
lights are on.  It hasnt  run this nice since I put this engine back on, and 
it looks like the gas  milage is back as well, although the trip down to 
RIchmond was VERY windy on  the first leg of the trip thru NY and massive 
traffic backups that are always  a problem around DC ruined what looked to be a 
very good gas mileage on the  second leg of the trip too.

What a difference a volt  makes!





Yeah, I went thru this off and on for over a year until Jim and I talked at 
 the 2010 Invasion, about charging systems. We were actually discussing the 
 difference between carbed and FI requirements at the time, but it got me 
to  thinking about my FI system. My 71 would start out at 14.2 volts, and  
within 3 miles, the voltage would drop to 13.7, and after 5 miles it would be  
13.4. Too low for the FI system, which WAS causing my driveability issue.  
Jim hooked me up with one of his VR's, and it's been good to go since. A 
nice  solid 14.7 volts. Like Jim says, the FI really needs 14.1 to 14.5 volts 
to run  correctly, and I believe it. Thanks again Jim. : )  

Bob 65 Notch  S with sunroof and IRS (Krusty)
71 Notch (Krunchy)
64 T-34 Ghia  (Wolfie)
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