[paul1998]

i have a 2017 coralla that will ocationaly squeak when started but will go away with in second and will do the same thing when accelerating from a stop light. ive replaced the and it still does it when its cold. im at a loss. any advise as to what could solve it?

 

[75aces]

Did you recently replace the belt? The squeak is there because there’s not enough tension on the belt. Did you reset tension after installing the belt?

 

[paul1998]

it was replaced back in the spring. it has just recently started this issue.

 

[75aces]

If it’s the not the belt, then it could be the alternator pulley. Remove the belt and spin the pulleys by hand to verify the squeaking pulley.

 

[TruckerI5]

It may have stretched a bit. grab the belt with your fingers at the center of its longest section, try to twist it. It should be very difficult to get it past a 90 degree turn/twist. If it is, then it is tight enough, if it is easy to get it to 90 degrees then it is too loose.

 

[Chuy]

If it’s the not the belt, then it could be the alternator pulley. Remove the belt and spin the pulleys by hand to verify the squeaking pulley.

If you are going to remove the belt, don’t just check one pulley/bearing, check them all - Alt, PS, water pump, AC, and Idler/tensioner. The pulleys should spin smoothly and without any play - check for side to side and fore/aft movement.

 

[75aces]

Note to self, pulleys.

 

[Wheatwacked]

I agree. Tighten the belt. Toyota belts need to be tighter than American cars.

 

[jhnjohnp76]

Well, if your corolla has a spring loaded tensioner, there is no adjustment. If you're adjusting the tension by spacing the alternator, check the belt at it's longest run between pulleys, and it should deflect no more than a half inch when pushed, or can't be twisted no more than 90 degrees or so without resistance. Not too sure about Toyota belts needing more tension than other cars.

 

[scooterkees50]

i have a 2017 coralla that will ocationaly squeak when started but will go away with in second and will do the same thing when accelerating from a stop light. ive replaced the and it still does it when its cold. im at a loss. any advise as to what could solve it?

It might be your water pump is going out. The pumps pee hole starts to drip because the bushing is going bad. It drips over night so when you start the belt is wet so it slips and squeals untill it dries out. Check for coolant on the place where you park. It will get worse till your pump blows up.

 

[TruckerI5]

First make sure the belt is tight enough, it can stretch over time, and even after first use.

Inspect the belt for any damage or shiny spots. Look for any moisture or oils, belt should be dry and clean.

If you still get the squeal and want to pinpoint it, pick one of these up at your local harbor freight or amazon... Mechanics Stethoscope $5 they are dirt cheap and come in handy for finding the sources of other engine noises. Heck, while you are at it, here my 2 other favorite cheap but very handy tools, may help you find any leak or wear that is hard to see from above the car. Mirror, and Magnet. That magnet on a stick has saved me so much frustration when working on engines, dropping a nut/bolt, Wrench, socket etc down into the engine compartment where you can not reach, this thing gets it right out, also easier to recover things that fall onto the ground under the car without having to get on my hands and knees or on my back under the car.

You said it happens on start-up and acceleration, have someone in the driver seat starting or hitting the gas to cause the squeal to occur and chase down the source of the noise with the stethoscope. Then go from there. But the most common cause is a belt that just needs a little more tension.

Also, make sure all your fluids are at the proper level and in good condition.