Mazda 3 Downshifts During Uphill and When Trying to Accelerate

[paomigz15]

Mga Boss,

I have a Mazda 3 / 2005 / AT. Ang problem ko is during uphill or pag mag accelerate ako madalas magdownshift at mahina hatak. Nahihirapan din car ko maabot 100 kph sa highway. Usually 80 kph lang. Nagda downshift siya if press ko pa lalo gas then ayaw lalo nawawalan power. Ano kaya problema nito? Madami na ako napalitan like change oil, spark plug, ATF change, fuel filter pero may issue pa din.

The other day while papunta ako Antipolo nahihirapan talaga sa uphill car ko at umilaw na check engine so hindi na ako tumuloy. Dinala ko siya sa Mazda Makati, ang initial findings is kelangan palitan wiring harness for around P25,000. The thing is hindi pa daw sure kung maayos dun. Uunahin lang daw yun palitan if maayos dun. Kung hindi daw, check daw nila ang ECM at throttle body.

Ano ba maganda gawin? Tama ba advice ng Mazda Makati? Ok lang ba ang price? Or dalin ko na lang sa iba shop like speedyfix?

Thanks in advance!

[jaypee10]

go kana sa mazda makati.kung mag okey .bayaran mo.pero kung ganun parin eh dapat wala kang babayaran dahil hindi un ang sira.
pero kung babayaran mopa din ung 25k maayos man o hindi luge ka..depende nalang sa usapan nyo yan.pag nag ok bayad ka.pero kung hindi.pwedeng service charge nalang bayaran mo kahit mga 2k.basta play safe kalang at malaki din ung 25k..

[paomigz15]

Salamat sa reply sir! Dumating na yung final quotation. Around 31k lahat. 25k parts, 6k labor. Hindi ba masyadong mahal to? Nakalagay din sa note na "After replacement need to re-evaluate PCM and Throttle Body". So medyo worried tuloy ako na pwede na may iba pang sira. Balak ko na din kasi ibenta yung car para makabili ng brand new at less sakit sa ulo. Any advice is welcome. Thanks!

go kana sa mazda makati.kung mag okey .bayaran mo.pero kung ganun parin eh dapat wala kang babayaran dahil hindi un ang sira.
pero kung babayaran mopa din ung 25k maayos man o hindi luge ka..depende nalang sa usapan nyo yan.pag nag ok bayad ka.pero kung hindi.pwedeng service charge nalang bayaran mo kahit mga 2k.basta play safe kalang at malaki din ung 25k..

[baludoy]

Saan ba area nyo bro? Kung sa southside ka pacheck mo tranny mo sa d & r fast auto repair along sucat ave in pque near mercury drug. Kuha ka 2nd opinion kay sir danny

to be or not to be, that always confuses me!

[L1quid]

Bigla nalang ba nagkaganyan or may recent ka'ng pinagawa? Ganyan simtomas ng retarded timing eh, baka yun lang pala yan.

Anyway, before pulling the trigger sa qinoute sayo, pacheck mo din sa iba para may 2nd opinion ka.


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[paomigz15]

Change oil, spark plug, ATF change and fuel filter lang pinagawa ko recently trying to address the same issue. Pero may issue pa din kaya dinala ko na sa casa. How much ba repair kung retarded timing lang ang problem? Try ko din pacheck yan. Thank you!

Bigla nalang ba nagkaganyan or may recent ka'ng pinagawa? Ganyan simtomas ng retarded timing eh, baka yun lang pala yan.

Anyway, before pulling the trigger sa qinoute sayo, pacheck mo din sa iba para may 2nd opinion ka.


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[L1quid]

Change oil, spark plug, ATF change and fuel filter lang pinagawa ko recently trying to address the same issue. Pero may issue pa din kaya dinala ko na sa casa. How much ba repair kung retarded timing lang ang problem? Try ko din pacheck yan. Thank you!

Sorry, i meant bago magsimula yung mahinang hatak na issue, may pinagawa ka ba?

Yung timing usually kasama ito sa pag tune up. Asa 150 lang ata check nito if i remember correctly sa mga servitek, 200 siguro or 500 max kung makitang wala sa timing and ipacorrect mo. Kung sa suki mo baka gawin pa nila libre yan. Kelangan lang ng timing gun dyan.


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[paomigz15]

Sorry, i meant bago magsimula yung mahinang hatak na issue, may pinagawa ka ba?

Yung timing usually kasama ito sa pag tune up. Asa 150 lang ata check nito if i remember correctly sa mga servitek, 200 siguro or 500 max kung makitang wala sa timing and ipacorrect mo. Kung sa suki mo baka gawin pa nila libre yan. Kelangan lang ng timing gun dyan.


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Wala naman ako pinagawa bago magloko. Bigla na lang nagloko. Posible ba na mawala sa timing kahit wala naman pinagawa? Nagloloko siya pag under load like uphill or pag gusto ko overtake tapos malakas apak sa gas. Mag rev lang siya at downshift tapos lalong bumabagal imbis na mag accelerate. Sige papatingnan ko din yun. Wala pa nagrecommend sa nun sa caltex service center at mazda.

[mina_nuka]

Can you take pictures of the spark plug tips and post them here?

[paomigz15]

Can you take pictures of the spark plug tips and post them here?

I can't take pictures now nasa Mazda Service Center kasi. Pero nagpalit na din ako spark plugs. May issue pa din.

[paomigz15]

Eto ang note ng Mazda Makati: "Initial Findings: Need to replace wiring harness due to high resistance. After replacement, re-evaluate PCM and throttle body." Sabi saken nung Service Advisor ko sa Mazda yung wiring harness daw talaga tinuturo nung error code, and based on their visual checking, may problem daw talaga sa delivery ng kuryente. Tingin niyo ba mga boss honest naman tong si Mazda Makati? Wala naman problem saken kung sure naman talaga na yun ang sira at honest naman. I also asked speedyfix if may wiring harness sila pero wala daw, though hindi ko pa napatest drive kay speedyfix.

[mina_nuka]

We can almost picture and imagine how new spark plugs look like, we are not interested in that. It's like automobile forensics, we look how the plugs burn pattern look like specially in what cylinder pattern. The spark plugs "been there, done that" all those times the engine ran. They are the observers, the evidence and the tell tale signs

[mina_nuka]

Pull your car out of those " guess and hope" guys. Take it somewhere else

[paomigz15]

Pull your car out of those " guess and hope" guys. Take it somewhere else

Thanks for the advice! I will probably take it to speedyfix.

[yebo]

when you say "wiring harness" do you mean the high tension wires going to the spark plugs? those are easy to replace. bring it to an auto electrical shop in banawe like mazford baka meron sila nyan.

[paomigz15]

when you say "wiring harness" do you mean the high tension wires going to the spark plugs? those are easy to replace. bring it to an auto electrical shop in banawe like mazford baka meron sila nyan.

They are referring to the entire "Engine Wiring Harness" bro.

[jaypee10]

They are referring to the entire "Engine Wiring Harness" bro.

wow..bakit buong wiring..pero ganyan talaga sa casa.buo talaga kung magpalit at hindi sila nag to troubleshoot kung aling wire ang may putol ar loose contact.kung walang problem sayo ipagawa mo na sa casa.basta mag close kayo ng usapan na kapag gumana magbabayad ka.pero kung hindi.sila bahalang mag trouble shoot ng ibang sira.

[barako ba ma]

wow..bakit buong wiring..pero ganyan talaga sa casa.buo talaga kung magpalit at hindi sila nag to troubleshoot kung aling wire ang may putol ar loose contact.kung walang problem sayo ipagawa mo na sa casa.basta mag close kayo ng usapan na kapag gumana magbabayad ka.pero kung hindi.sila bahalang mag trouble shoot ng ibang sira.

It's called incompetence