Screaching from engine bay

[e34_spangler]

There was a screaching/squealing from the engine bay so I replace the old belts and now the squealing stoped but I guess the screaching wasn't in the belts all the new ones run great are tight like suppossed to be amd there the right ones so what woild make a screaching sound? Goes in and out I think I've only ever heard it when driving and not when at a stop sign or just sitting there. Thanks in advance!

Sent from my SCH-I535 using Tapatalk 2

[e30construction]

a pulley could be going out somewhere..

[e34_spangler]

Anyway to tell?

Sent from my SCH-I535 using Tapatalk 2

[george graves]

You better hope it's not a timing belt. That's a belt too. If it goes, your engine goes boom.

You can hit pulleys with some wd-40 and sometimes they will quite down.

[jlevie]

A bad bearing on some rotating part on the front of the engine would be a likely candidate. Or the motor mounts could be bad and the fan is rubbing on the shroud.

[e34_spangler]

Well it shouldn't be the timing belt when I bought the car the guy showed me reciepts of having a new time belt put in..

Sent from my SCH-I535 using Tapatalk 2

[e30construction]

get some belt conditioner and spray each belt one by one and see if it stops..could also be a fan clutch..check ur mounts like he said and see if your fan is touching anything

[e34_spangler]

get some belt conditioner and spray each belt one by one and see if it stops..could also be a fan clutch..check ur mounts like he said and see if your fan is touching anything

I was soraying belt conditioner on the old bwlts yo stol the noise but I shouldn't have to with new belts?

Sent from my SCH-I535 using Tapatalk 2

[dannyyisntt]

I think it's clear that moth man is stuck in your bay. Hence the screeching

[e34_spangler]

I think it's clear that moth man is stuck in your bay. Hence the screeching

I was thinking that:p

Sent from my SCH-I535 using Tapatalk 2

[e30construction]

if the noise is coming from a pulley the conditioner will still make it go away for a few seconds

[e34_spangler]

if the noise is coming from a pulley the conditioner will still make it go away for a few seconds

Ok so sorry not a master mechanic but how do I tell if ones bad

Sent from my SCH-I535 using Tapatalk 2

[e30construction]

spray the pulley one by one and see if the noise goes away when you hit one of them..also try spraying the fan/fan clutch..and if it goes away when you spray which ever one then theres a high possibility that the one that u sprayed and it stopped is bad

[kronus]

It's possible that your accessory pulleys have some mounting issue. This can happen with alternators, the rubber bushing disintegrates and the alternator goes out of alignment with the rest of the engine, putting the pulley at an angle, which can cause screeching.

[mrgraphics]

An incorrectly tensioned belt can do that. When installed they may have been tight, but they slightly stretched and now are mildly slipping. A re-tension of the belts may solve it.