Alternator Charging

[ashy_gtt]

I am having a few teething problems with the 172 lump that ive dropped into a renault 5.

The main one at the moment is that the alternator is charging my battery at 15 volts. The alternator gets very hot and so does the battery (as you could well imagine)

Anyway the basic fact of it is on the gtt wiring there is the +ve wire that runs from the starter and then two small wires one which turns on the regualtor and one which controls the dash battery warning light.

If i disconnect these two wires the car runs but will eventually flatten the battery... Has anyone got any ideas why the alternator would charge at 15v? is there no regualtor on a 172 alternator and does the ecu somehow control the voltage it produces or something?

I'm running it on a DTA ECU you see, so i could be missing something that the ECU controls to vary the charge volatage?

Any ideas?

Cheers Ashy.

 

[edde]

The alternator (assuming its a phase 1 ie a Valeo A13 VI259 one) should make 13.5 volts

At engine speed
1.5k 26A
2k 57A
4k 95A

Its a 110 Amp system

If its a Cup alternator its Valeo A11 VI88 (Cups use a special alternator)

voltage on them should be between 13.5 and 14.8V
At engine speed
1k 46A
2k 68A
3k 71A
4k 72A

 

[ashy_gtt]

The alternator (assuming its a phase 1 ie a Valeo A13 VI259 one) should make 13.5 volts

At engine speed
1.5k 26A
2k 57A
4k 95A

Its a 110 Amp system

If its a Cup alternator its Valeo A11 VI88 (Cups use a special alternator)

voltage on them should be between 13.5 and 14.8V
At engine speed
1k 46A
2k 68A
3k 71A
4k 72A

yeah its a 110amp alternator, valeo one. there is a reno part number on it.

I'm guessing its a problem with the regualtor? do you know if they can be changed?

 

[ashy_gtt]

the alternator is a A13V1259 25423547A 7700436671

ive had the back off it and can't see anything that looks removable.

http://www.rtoc.org/library/file.asp?id=33975

Maybe i should just buy a new one and try that....

Any idea wheres cheapest?

 

[Chris_H]

alts fooked get another

pic doesn't work either

 

[ashy_gtt]

alts fooked get another

pic doesn't work either

Sh*te, Eurocar parts has em for £125.00 is that the cheapest I'll get?

 

[ashy_gtt]

Anyone got a pic of a clio 16V alternator, do they have the same mounting setup?