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TS: I think I know what it is

2128 Views 8 Replies 5 Participants Last post by  Craig
I have an Alfetta with a TS. I live in Orlando, FL and it rains alot here so I don't drive it much. When I do drive it, I notice that for the first few minutes, it stumbles and hesitates frequently, but then, after a few minutes, it's ok. I think it's because the alternator is trying, all at once, to power the engine management, supply other car's power demands and charge the battery back up since the car's been sitting. thougths? -Clark
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Cold start injector? If it was a voltage failure the engine would just cut out, right?
Sorry Matthew, no cold start injector on a TS.

G'Day Clark,

I doubt it's the alternator but I have been wrong before.

If you have a low voltage condition (check it before starting) it could be the fuel pump not supplying enough pressure.

Try two things, first is as I said, measure the battery voltage, second is put the battery on charge the night before driving and see if you still get the problem.
Also check the voltage at the fuel pumps, I had the motronic socket burn out dropping voltage to the pumps. I had to splice in a new socket.
temp sender.
under/rearwards from the #4 intake runner on the intake on the head.
It seems the voltage regulator was the culprit. -Clark
Check that! The problem's still there. I put the original BOSCH alternator that came with engine in with the new voltage regulator and it seemed to be fine yesterday. This morning, the problem was worse, the headlights were noticeably dimmer and the radio keep fading out but car ran ok after some initial stumbling and hesitation. The Bosch unit puts out 65 amps and the GM pumps out 110. Bosch alternator, the issue last about 5 minutes, the GM, about 2 minutes. Back to the GM unit. I charged the battery overnight last week and that helped on that specific morning. Maybe something's draining my battery?

Craig, is there a wire in the TS wiring harness that needs to be plugged into the alternator to monitor the car's electrical needs? -Clark
If you have a multimeter you can put it in series with the cable coming off the battery when the car is switched off, to find out if current is being drawn with the ignition off.

As always with the Alfas, check your grounds - undo them and use steel wool on the contact surfaces to make them nice and bright, then tighten them up nice and tight.

The engine ground on the Alfetta is underneath, low down on the engine near the flywheel housing - it's a braided strap which connects the engine to the bodywork. If that's broken or corroded it might make the engine hard to get going.

And of course, your battery may be shot. How old is it?
G'Day Clark,

Since this is a conversion, has it ever worked correctly?

As Matthew asked, do you have a digital voltmeter (multimeter)? If not, get one (a cheap $10 one will do) and measure the battery voltage after sitting overnight. Then start the car and measure the battery voltage at a fast idle (about 1200rpm). Let us know the results.

There should be a green(?) wire from the alternator to the warning light on the dash.
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