fluctuating voltage on a 2010 montero

[j_dipad]

Try mu patutukan ng live wire yung live battery post ng alternator kung mag babago..meron kse kme experiences na ilang beses na napalitan ng alternator yun pala ang problem is yung original line cable ng livewire..

sir, ok po ba kung mag bago ako ng live wire from + alternator to + battery? ano kaya recommended na guage ng wire?

[yapoy86]

sir, ok po ba kung mag bago ako ng live wire from + alternator to + battery? ano kaya recommended na guage ng wire?

^yun na nga sinabi ko oh... yung main wire from alternator... check mo din yung sa may fuse nyan alternator baka kailangan mo linisin yung contact.. take note to remove the connection then clean! hindi yung hihigpitan lang

[akosijepoii]

sir, ok po ba kung mag bago ako ng live wire from + alternator to + battery? ano kaya recommended na guage ng wire?

same ng guage ng wire ng nakakbit sa live battery post ng alternator mu..based sa experience namen sa electrical meron kme gnawang strada 4m41 engine din sya same ng problem ng t.s..after namen kalasin wala kme nakita problem after namen test sa labas or buksan yung alt so binalik namen yung alt kse wala kme makita trouble sa alternator..so nung pinaandar na engine ganun pa din charging nya 12.1 to 12.3 so gnawa namen tinutukan namen ng live wire yung battery livewire post ng alternator then umakyat sya sa 13.5 to 14 so yun yung trouble gnawa namen nag add on kme ng battery live wire sa battery post ng alternator =) khit nka load aircon headlight 13.5 to 13.8 charging nya =)

[j_dipad]

sir yapoy86 and sir jeff thanks sir sa mga advise. try ko bukas na padagdagan ng wire bukas. may nakausap na din akong electrician. update nalang ako as soon as magawa na.

[altec]

Update.

Yung outside shop installed the strada's alternator to the montero. And true enough, bumaba rin ang voltage. The shop also installed a separate wire to bypass the wirings if in case the wiring was grounded or defective. Bumaba pa rin. Napansin namin na mas mataas ang idling ng strada kaysa sa montero. I have not checked with other monteros that have good voltage kung ano ang idling rpm nila. But when I asked the same service manager, sabi niya they plugged my montero to their computer and nothing wrong came out. Yung idling pala is automatically set by the car's ECU. Di siya pwede manually adjust. When I asked if they can connect the computer to the car and program it for a slightly higher rpm, sabi ng service manager the computer does not allow that option. Automatically set daw ang idling. And the montero's idling is within specifications. Sabi ko maski 50rpm increase lang, kasi when we stepped on the pedal ever so slightly, tumaas din ang voltage.

The service advisor suggested to clean the throttle body. I had my doubts and this was the same opinion by the service manager. Sabi ko, if the ECU is the one controlling, then any problems with the throttle, the ECU will compensate to make sure the target idling is achieved. So if we clean the throttle body, the ECU will compensate the idling again based on the current situation.

Napansin ko yung rpm needle touches on the line of the 600 rpm, it looks kinda low. When the a/c compressor switches on, the idling goes up to around 850. Compare this to the Strada, the idling is at 700-750 and with a/c on, the idling goes up to 900.

[j_dipad]

*TS, any update pa sir?

[altec]

sorry for the late update. Wala pa kasi akong bago ma report dahil sira pa raw ang computer ng casa. They sent it back to head office to reformat the computer. They told me to follow up with them next week kung ayos na ba ang computer. I told them that mababa ang rpm, nasa 600rpm needle line. I do not think that is the normal level and since they claim the computer is the one who dictates the rpm range, dapat makita ng computer nila na 600 is too low. According to the sticker under the hood and the owner's manual, 600rpm is too low.

[altec]

Latest update.

I was finally able to schedule with the CASA to use their computer called MUT. Ang na register sa MUT, target idling speed 650rpm. Yung actual rpm ko, 650 nga. When the aircon compressor switches on, the idling goes up to 900rpm. With accessories switched on, 650 rpm drops immediately to 13.3 or so. Then gradual drop. Sa kakausap ko sa technician, the voltage eventually dropped to 11.8. Sabi ng technician, walang warning from MUT, therefore, 11.8 is not abnormal. He even said dapat below 11 or around 10 para magtrigger ang MUT to say something is wrong. When the rpm goes up to 900, the voltage is at 13.3-13.5 but does not drop as much as when it is at 650rpm.

When I asked what is the difference between the Strada and Montero with the same engine, sabi nila ang Strada has a setting of 750rpm. When I asked pwede ba iplug ang MUT but declare as Strada, hindi raw pwede, hindi babasahin ng MUT.

This means I am left with a fluctuating voltage and expect a shorter life span on the car battery. Kawawa ang battery supplier nito kung pasok sa warranty period pa pag masira.