Brent79

Guys ive had this problem for awhile but now it appears worse.
Ive been noticing that the Charge light on the dash was slightly illuminated when the IGN was off. Now it seems that its getting brighter and is almost fully on when the engine is off. Its been coming on sometimes when driving and sort of pulsing a little. Its not real bright like when yer alt belt is off tho. Is this a sign of early regulator failure?

Brent

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EB1 3.9L MPI Falcon Wagon with converted T5 / Pacemaker & 2.5" Redback sports exhaust / 2" lowered blocks at the rear, Kings lows up front / ED Tickford Head and Cam / K&N panel filter with XH intake Snorkel / Full EL Fairmont interior with woodgrain

89 EA1 3.9L TBI Falcon Sedan with 3 speed auto / currently being upgraded...

Martin

Id be checking the tension of the belt, and the condition of the battery terminals first....

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1993 ED XR6 M5 (1 of 329)
Polynesian Green
Turbo on the way!!
1993 EBII Fairmont (Now wrecking, PM if you want any parts)
1988 Nissan R31 Skyline

TopGhia

Check the diodes in the alternator.
Turn ign off. Remove the 2 pin connector .
Measure the voltage at the wiring harness L terminal (the one closer to the 3 oclock position) It should be 0V. If it's not, check the wiring. If it is 0V, the problem could be in the instrument cluster.

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"I married Miss Right. I just didn't know her first name was Always."

Brent79

I dont have 0V at either terminal... 12V at one and 2.5V at the other. This is the small 2 pin connector terminal...

Brent

__________________
EB1 3.9L MPI Falcon Wagon with converted T5 / Pacemaker & 2.5" Redback sports exhaust / 2" lowered blocks at the rear, Kings lows up front / ED Tickford Head and Cam / K&N panel filter with XH intake Snorkel / Full EL Fairmont interior with woodgrain

89 EA1 3.9L TBI Falcon Sedan with 3 speed auto / currently being upgraded...

TopGhia

Yea, the L terminal should be OV not 2.5, so you have a fault in the wiring circuit. I haven't got any wiring diagrams, so that's the best I can do. Also check the fuse for a loose contact and the integrity of the battery connections and connections to the alternator. With the motor running, check the voltage at the battery, should be about 14V, turn all lights and a/c on and check again, if it drops to around 12V, your alternator is not charging properly.

best of luck, let us know what happens.

Cheers

__________________
"I married Miss Right. I just didn't know her first name was Always."

Brent79

Thanx TopGhia.... I couldnt find any wiring faults so i went down to the wreckers and got a replacement alternator. The charge light doesnt come on anymore and im getting about 13.4V at the batt terminals.... it increases to about 13.6V if i rev up the engine... Before i was getting about 12.4V so i hope this fixes the problem. Ive also tightened up the batt terminals.

Brent

__________________
EB1 3.9L MPI Falcon Wagon with converted T5 / Pacemaker & 2.5" Redback sports exhaust / 2" lowered blocks at the rear, Kings lows up front / ED Tickford Head and Cam / K&N panel filter with XH intake Snorkel / Full EL Fairmont interior with woodgrain

89 EA1 3.9L TBI Falcon Sedan with 3 speed auto / currently being upgraded...

TopGhia

Thanks for letting us know.

Cheers

__________________
"I married Miss Right. I just didn't know her first name was Always."