Problem encountered on my 96 Gli Corolla BigBody

[znehdsky]

Merry Christmas mga Bossing...

Hingi lang po sana ako ng assistance sa mga master na in trouble shooting this type/model of my car.
Last friday kasi, while travelling QC Circle, I've noticed a sudden reboot of my car stereo nung nag neutral ako. At that time traveling around 40km/hr (free-wheeling). As I progress, naging frequent yung reboot nung stereo whenever nagpi-freewheel ako. Then later on kasabay na yung pag-ilaw nung battery indicator sa instrument panel kada naka nagrereboot yung stereo. Di naman namamatay yung makina, pero umiilaw nga yung Battery indicator.
So nung nakauwi ako and nagtroubleshoot na, nakita ko lumuwag pala yung negative terminal sa battery. Thinking na ito na yung cause nung problem, hinigpitan ko nalang.
So after nun, hindi na umulit yung pagreboot and pagilaw nung battery indicator. Kaso I've suddenly noticed na nagintermittent yung Idling ko whenever naka aircon ako. Dati na nagyayari yung sudden drop nung RPM ko to around 500, pag naka aircon ako. Pero pitik lang yun then tataas na uli sya around 800-1000. I consider yun na ang normal nung auto ko given na oldies na kasi. Pero after the incident, grabe! Bumabagsak yung IDLE around 500 and it will stay there mga few seconds longer, then babalik na sa normal. Minsan nga ang tagal nag-i-istay around 500 then aapakan ko nalang yung gas para itaas yung RPM, then mag normal na sya. Minsan din naman nagtataas baba sya several times kapag nag engage yung Aircon. What I did pag nagtaas baba na was turned ON and OFF yung AC then magnonormal sya.
I'm really disturbed nitong nangyayari sa auto ko ngayon, pero hindi ako sure kung ano muna ipapacheck ko and saan. Luckily e hindi pa naman ako tinitirik, pero baka me nasira na o me sinisira na as I continously use the car. Is it possible na me naapektuhan sa system nung nag-loose yung negative terminal sa battery??
So HELP naman po dyan mga ka-Tsikot. Just some tip what to check next or if ano kaya naging problem nito. Maybe some recommended shops kung saan best ipacheck to.

Hoping for your soonest replies. Maraming salamat po!!

[tanatej]

Check mo alternator, belt muna tignan mo baka maluwang.

[electricx]

Merry Christmas mga Bossing...

Hingi lang po sana ako ng assistance sa mga master na in trouble shooting this type/model of my car.
Last friday kasi, while travelling QC Circle, I've noticed a sudden reboot of my car stereo nung nag neutral ako. At that time traveling around 40km/hr (free-wheeling). As I progress, naging frequent yung reboot nung stereo whenever nagpi-freewheel ako. Then later on kasabay na yung pag-ilaw nung battery indicator sa instrument panel kada naka nagrereboot yung stereo. Di naman namamatay yung makina, pero umiilaw nga yung Battery indicator.
So nung nakauwi ako and nagtroubleshoot na, nakita ko lumuwag pala yung negative terminal sa battery. Thinking na ito na yung cause nung problem, hinigpitan ko nalang.
So after nun, hindi na umulit yung pagreboot and pagilaw nung battery indicator. Kaso I've suddenly noticed na nagintermittent yung Idling ko whenever naka aircon ako. Dati na nagyayari yung sudden drop nung RPM ko to around 500, pag naka aircon ako. Pero pitik lang yun then tataas na uli sya around 800-1000. I consider yun na ang normal nung auto ko given na oldies na kasi. Pero after the incident, grabe! Bumabagsak yung IDLE around 500 and it will stay there mga few seconds longer, then babalik na sa normal. Minsan nga ang tagal nag-i-istay around 500 then aapakan ko nalang yung gas para itaas yung RPM, then mag normal na sya. Minsan din naman nagtataas baba sya several times kapag nag engage yung Aircon. What I did pag nagtaas baba na was turned ON and OFF yung AC then magnonormal sya.
I'm really disturbed nitong nangyayari sa auto ko ngayon, pero hindi ako sure kung ano muna ipapacheck ko and saan. Luckily e hindi pa naman ako tinitirik, pero baka me nasira na o me sinisira na as I continously use the car. Is it possible na me naapektuhan sa system nung nag-loose yung negative terminal sa battery??
So HELP naman po dyan mga ka-Tsikot. Just some tip what to check next or if ano kaya naging problem nito. Maybe some recommended shops kung saan best ipacheck to.

Hoping for your soonest replies. Maraming salamat po!!

Kindly have first your idle up valve be checked. That a solenoid valve electrically opeated that rise up the idle speed of the car/vehicle once you put-on your car aircon. Have its electrical be checked.

[Benzmizer]

Kindly have first your idle up valve be checked. That a solenoid valve electrically opeated that rise up the idle speed of the car/vehicle once you put-on your car aircon. Have its electrical be checked.

+1 to this. Could also be a case of faulty wiring (due to age or mods done on the car if any) or a "wounded" main wire. Best to have a trusted electrician / shop check that ASAP.