Sometime when i start a car my engine make noise (metal noise). It's kind of fan noise. may be a fan touching something or something else. if anyone have any idea where this metal sound usually come from.
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your getting a click noise from your starter not having enough power to turn your enginge over test your battery to see if it is dead and if so charge or replace but if its not dead then you need to check your connections at your starter and make sure therre hooked up right and are tight especially your ground make sure it is hooked to a clean metal to metal surface and is tight the same for your power wire make sure it is clean and is tight, but def check your battery first the click usually means dead batery
your post is 9 days old ,no body touched it because there no car info make model or year , it does make a differance all i know is most kia's have an idle air adjustment valve . it acts like a choke at start up .it could be the sorce of your problem . but not the only one. without a check engine code .kind of quesing
What type of sound is it first off? It could just be brake dust. Alot of people dont know that brake pads have a little metal piece on them thats sort of like a sensor,when the pads wear down past a certain point the little metal piece starts to scrap the rotor which will make a screeching noise.The more the pad wears down the louder and more annoying the sound becomes.
The hydraulic lifters sometime get dirty and stick. Sometime they colapse and always make a ticking noise. If it is intermittent, I use
a engine up lube cleaner. Follow directions on bottle then change oil. This could help. Also fuel injectors will make noise when they are getting worn.
By turning on one of these systems you are putting more load onto the fan. Consequently the fan start to shudder under the load therby making the noise. This becomes more noticable as fan bearings become old and worn out. You could try and inject white lithium grese onto the fan shaft some of it might reach the bearing. Also check that the fan is not chipped under load that will start to make noise. sometime fan blades sofer from stone damage consequently chipping the fan blades