3 wire Alternator and Fuel problems

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3 wire Alternator and Fuel problems

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Camaro Forum >> Camaro Models >> 1st Generation >> V8 Tech >> 3 wire Alternator and Fuel problems

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3 wire Alternator and Fuel problems - 2/19/2008 11:40:01 AM

sbrewer71569

Posts: 8
Score: 0
Joined: 2/1/2007
Status: offline

383 Stroker Project

Problem #1
The car has a newer 3 wire internally regulated Alternator. When I bought the car it was stripped and I had to completely re-wire it and used a painless wiring kit. When the car was running I had noticed that the alternator was not charging since my system voltage was dropping to approx 11.8 volts. I had the main Battery Charge lead and the "Alt Ext" connection made, but the third wire I had left disconnected. It is marked "Bat" and I assumed this could only be the remote voltage sense wire. I decided to connect this straight back to the main battery terminal of the alternator not thinking much else about it. When I cranked the car up and rev above idle I could instantly see the system voltage rise as I guess the alternator was kicking in. Then about 10 sec's later the car would start to mis-fire badly and would eventually stall. I disconnected the wire again and everything runs fine. I am guessing that the remote sense wire is somehow dragging the system voltage down and causing my ignition system to mis-fire. Could this be because I connected the sensing wire directly to the Alternator Battery terminal? Would you have any information on this.

Problem #2
Started to notice fuel leakage from somewhere on my new Holley carb. I have already replaced base gasket and re-sealed etc but it is still happening. I cannot pin point exactly the source of the leak but the base is always wet and occassionally has fuel dripping from the secondary vacumn rod. The car is fitted with what I believe is a fairly high flow Fuel pump (previous owner was going to drag) Could it be that the fuel delivery pressure is so high that the carb seals etc are leaking. Do you know if it is necessary to run some type of fuel pressure regulator with this type of setup.