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need help with engine noise

dezpimpdada

By dezpimpdada
in 986 Series (Boxster, Boxster S)

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dezpimpdada Member

dezpimpdada

Posted
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i have a 02 boxster S with 66k miles, two days ago the car started having noise coming from the engine. no CEL , car drives fine just having constant rotary, metal grinding sound. it is not affected by the clutch or accel padel. sounds very similar rotors being machined but quieter. anyone with similar experiences? by the way, not sure if its related but prior to getting home 2 days ago, i had miss shifted turing into my block, that's when i first noticed the noise after parking my car.

thanks for your help!!!

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pk2 Member

pk2

Posted
Posted
i have a 02 boxster S with 66k miles, two days ago the car started having noise coming from the engine. no CEL , car drives fine just having constant rotary, metal grinding sound. it is not affected by the clutch or accel padel. sounds very similar rotors being machined but quieter. anyone with similar experiences? by the way, not sure if its related but prior to getting home 2 days ago, i had miss shifted turing into my block, that's when i first noticed the noise after parking my car.

thanks for your help!!!

Try not to drive it, get to a garage and have someone pinpoint the problem. Could be minor, but worse case scenario your making it much worse the more you drive it.

PK

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dezpimpdada Member

dezpimpdada

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i have a 02 boxster S with 66k miles, two days ago the car started having noise coming from the engine. no CEL , car drives fine just having constant rotary, metal grinding sound. it is not affected by the clutch or accel padel. sounds very similar rotors being machined but quieter. anyone with similar experiences? by the way, not sure if its related but prior to getting home 2 days ago, i had miss shifted turing into my block, that's when i first noticed the noise after parking my car.

thanks for your help!!!

Try not to drive it, get to a garage and have someone pinpoint the problem. Could be minor, but worse case scenario your making it much worse the more you drive it.

PK

thanks PK, i will try to have someone check the car tm, hopefully its nothing major. i have called the porsche dealership and first appt is next monday, however the service adviser seems to think if no CEL and drives fine should be ok for now.

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dezpimpdada Member

dezpimpdada

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ok so i had the car checked at a porsche specialist today, turns out the water pump is bad. never would have thought that, was guessing more of tensioner or pully. anyway, the guy says its a commom problem for porsche water pump to go out. at least now i know i don't have a bad engine. cheers :D

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pk2 Member

pk2

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ok so i had the car checked at a porsche specialist today, turns out the water pump is bad. never would have thought that, was guessing more of tensioner or pully. anyway, the guy says its a commom problem for porsche water pump to go out. at least now i know i don't have a bad engine. cheers :D

Good,

Grinding is never good. You caught it before it failed completey, lost water, over heated etc, etc,

Happy motoring!

PK.

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dezpimpdada Member

dezpimpdada

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so i have the water pump replaced and the noise is still there!!! i will bring the car to another PORSCHE SPECIALIST, hopefully this will help fix my problem. i still think it may be the pulley or tensioner. again, the car is driving good except for the noise, no CEL. any thoughts ???

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dezpimpdada Member

dezpimpdada

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ok guys, need some help here. i was told today that the noise is from the alternator!!! it is a grinding sound that's constant, clutch doesn't affect it. there's no CEL, no battery light, car drives fine. so my question is if the alternator is bad wouldn't the car have start up problem due to insufficient charge. second, is it normal for bad alternator to make grindy noise? thanks all

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  • 3 months later...
pomocanthus Member

pomocanthus

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Dez

Did you ever get your engine noise problem resolved? You should open top engine access panel and also panel behind seats. Leave your top in service position so that you can listen for noise from the top as well as front of the engine. With car running, you should be able to narrow down the location of the noise. If it is the alternator, the noise should be coming from the upper left (when looking at the front of the engine from behind the seats. If water pump, noise near lower left (again looking from behind the seats).

I too am chasing a noise ... metal grinding or flapping. But noise is intermittent and only when I sit on the accel between 1-2000 rpm. My noise seems to be coming from on top of the engine, somewhere near the driver side intake manifold. Let us know your situation.

Thanks,

Hung

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dezpimpdada Member

dezpimpdada

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Dez

Did you ever get your engine noise problem resolved? You should open top engine access panel and also panel behind seats. Leave your top in service position so that you can listen for noise from the top as well as front of the engine. With car running, you should be able to narrow down the location of the noise. If it is the alternator, the noise should be coming from the upper left (when looking at the front of the engine from behind the seats. If water pump, noise near lower left (again looking from behind the seats).

I too am chasing a noise ... metal grinding or flapping. But noise is intermittent and only when I sit on the accel between 1-2000 rpm. My noise seems to be coming from on top of the engine, somewhere near the driver side intake manifold. Let us know your situation.

Thanks,

Hung

Hung

no more noise :D

i replaced the water pump but the noise was still there, then i was told about the alternator which i never replaced.

guys at sunset porsche suggested to remove the serpentine belt and turn all rotors to test all the pulley bearings, and everything seemed to be ok. after i re-install the belt the noise was gone. i have no explanation on how the noise just disappered. however i did remove the panel to listen for the noise and im sure it was coming from the pulley next to the alternator. i guess that was why i was told that i needed a new alternator. i didn't go for it cuz they wanted $1500 to replace it, and i am not crazy.

i hope this helps.

PS: i have a spare pulley if u need it.

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