Voltage Issue

[rabbito]

I thought it was battery issue and it was actually 1 1/2 years old so i replaced them with new one...the old battery produced 13v running and going below 12.7~9v during idle, hard for me to park the car, pedal becoming stiff etc.

i changed to new battery yesterday and its running 13.2v but having similar issues where its dropping volt during low idle...

this happened after camshaft install -_-
should i get some grounding wire kit to boost some voltage? engine only has 45,000km and in good condition...

any advice?????

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[IllusionX]

Sounds like an alternator issue to me.

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[NYC-SE]

What RPM are you idling at? Did your cam swap result in lower RPMs at idle? High performance cams are just that. They are designed for high RPM applications, often sacrificing low RPM performance.

[rabbito]

650~800rpm (auto transm.)
im running like 13v than when i back up or try to park, voltage just drops below 13v...all the way down to 12.6v and my brake pedal kind of becomes hard/stiff...

i thought it was brake booster or hose...it wasnt, got checked up...
i also thought it was the battery or line had corroded so i replaced them yesterday...so it not the issue..
i cleaned all the TB and maf with the crc cleaner...also not this one..

got my scan gauge back and noticed battery voltage been low....so i just ordered myself a HKS grounding kit...try to hook up battery to alternator and hope to boost the voltage up and pray that it works....

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[IllusionX]

My idle voltage is 14v.

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[06YarisRS]

My idle voltage is 14v.

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+1, Now that I installed a reman alternator. It was in the mid 13s before replacing.