hi,

need help po
tamarraw fx diesel 2C
bought 2nd hand 4 yrs ago
Usage:
1. daily commute to ofis / day shift (aprox. 5-6 km. distance from home)
2. city driving with minimal traffic (speed ave. 40km/hr)
3. no extra butingting sa unit, just the stock Radio and dual aircon.

symptoms & re-occurring issue
1. every approx. 2-3 months, ayaw mag start, parang drained ang battery / not enough power para i-start (parang battery is not fully charged but not fully drained).
2. bought new battery 6 months ago & new battery terminal, upgraded to Motolite excell para mas malakas daw, and did the BIG 3 connection ( made sure na grounding is ok both sa body and engine + connection from alternator to positive ng battery) same issue pa din.
3. everytime ayaw na mag start, nilinis lng ang battery terminal and push start, ayon ok na nmn then after 2-3 months, back to the same issue.
4. medyo may signs na it's time to clean the battery terminal (kahit na malinis ang terminal, kailangan linisin ulit otherwise, same issue) kasi humihina ang tunog ng horn, pag hindi ko nilinis, the next morning, ayon, ayaw magstart.


Starter, glow plug & fuel supply - for me is not an issue. pag malakas ang battery, start agad.
Grounded - for me, not an issue din /kahit maulan. kahit ilang araw hindi ginamit, start nmn agad.
Battery terminal is always clean.

alternator? not sure.
charging nmn sya and normal ang charge rating pag test sa battery shop.
could be na charging nya is not enough to compensate sa usage?
but basic lng gamit ko, stock stereo and aircon.
also, pag alternator, dapat hindi 2-3months kundi like weekly or even daily ang issue.
experienced alternator isyu with my other car, i know kung alternator (on my own understanding).

ilang shop na pinuntahan ko, sabi nila palit daw ignition starter, glow plug, battery, alternator, even ignition switch etc and etc.

Sorry, mahaba ang post ko, detailed na po. Thank you.

gusto ko sana ma-pinpoint kung ano ang isyu nito, ayaw kung palitan ang hindi dapat (sayang lng at magastos).

may na experience na po bah kayo kapareho nito?
pa-help naman po ng inputs nyo.

Thank you in advance!