rpm surges/fluctuates

[boknoy1]

Mazda 3 2005 1.6l.
patulong naman po regarding my car. start up rpm is normal, pag nareach na normal operating temp. ng vehicle rpm fluctuates (w/ load gear in D and a/c on) pero hindi siya namamatay. pag walang load (gear in N & a/c off) rpm surges to more or less 2000. if you try to rev the engine to about 3k to 4k the rpm goes down but not below 2500. if you try to rev up to 6k and release the accelerator pedal it goes down to normal idling (but not always), otherwise rpm fluctuates again. I've already changed MAF sensor, IAC valve, and already cleaned throttle body but the problem still persist. patulong naman po, ayaw kung dalhin sa dealer kasi diagnosing pa lang mahal na...

[jodski]

Since nagawa mo na yung basics... Next thing to do is have it scanned ng obd scanner para malaman kung may iba pang problem.


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[Red Advent 04]

:]:]:]


very good idea and advise bro..

[mrjeff]

Bro automatic ba gear mo

[boknoy1]

Since nagawa mo na yung basics... Next thing to do is have it scanned ng obd scanner para malaman kung may iba pang problem.


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Thanks Sir Jodskie for the reply...sige po gawin ko.
kung meron po bang vaccuum leak possible ba na magsurge din rpm?


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[boknoy1]

Bro automatic ba gear mo

yes sir...


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[mrjeff]

Dami pwede pgmulan ng trouble bro... Pero try mo hugutin socket wire ng TPsensor kung di ka nka TAC motor ang throttle body mo.. Jn mo malalaman kung mg stable sya ng idling... Pwede din ung socket ng MAF bunutin mo malalaman mo din kung mg stable din ang engine. Kc pwede sa CMP,ECT o mechanical gaya ng leak ang gasket mo... Sa gear pwede sa TCC... Sana di sa PCM kc kadalasan ang makina ng Mazda at ford jn ang problema..

[boknoy1]

thanks mrjeff...try ko yung throttle position sensor, yung mass air flow sensor bagong palit lang yun eh. hopefully basic lang problem nito.🚘 wala pa din kasi ako time magpascan kung may stored faults ang ecu, sa weekend pag maisingit.


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[mrjeff]

Your welcome bro... Magkano ba magpascan ng car??

[perrydel]

Huwag ka munang palit ng palit ng electrical parts hanggat di na scan, malalakihan ka dyan. Makikita naman yan sa scan kung electrical parts ang may problema. Pero ang leak, fuel presure regulator at fuel filter di makikita sa scan kaya check mo muna ito.