I have a 02 lancer and ever since i had my belts changed (alt and timing). I have had a very loud squeal when i start my car sometimes. Generally it has to be a little damp out like dew on the grass. Any ideas i added new PS fluid and used the belt spray. The belt spray works for only the first startup. Any help would be great. Thanks
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will try to assist you. the loud squealing is most likely a belt thats loose. when you start the engine it squeals for what?30seconds? when you turn the heater on it puts a drag of power from your engine and the engine is trying to compensate. so it [engine] asks for power,puts drain on engine and the loose belt squeals.a loose belt will squeal,simply because it's trying to do it's job.but loosing traction. so it squeals. check for play in belts with engine off of course. grab each belt by hand. if it has more than1/4 inch play or [slack] it needs adjustment,or replacement. hope this helps! thank you for choosing fixya.com we are here for you 24/7 7days per week! good luck!!
i checked the engine at gates.com, a manufacturer of timing belts. the '02 lancer is listed as an interference engine. that means if the belt broke while the engine was running, you might have some damage to the valves. also if it is slightly out of time, the problem could occur. you must make sure the timing is spot on, which may require going back into the timing belt and checking crank and cam position. you may also have to tear the valve train down and check for damage
Shortly after replacing the serpentine belt in my lancer, the same thing happened. It is NOT the timing belt. Belts squeal when they slip. If your timing belt slipped it would cause your car to run funny.
have somebody check the belt for wear (or do it yourself), replace if necessary. If it doesn't need replacement, just tighten it.
If you have the 4cyl engine that I have, the tightening is kind of a pain in the ****. Not a great design by mitsubishi. There's a pulley near the front right corner of the engine in front of the alternator. the belt should be running around this pulley GROOVE SIDE OUT. This is the tension pulley.
To tighten: 1) Lightly loosen the bolt in the center of the pulley (slightly loosen, DO NOT REMOVE). 2) Under that pulley there's another bolt. You can see that the bolt goes through a piece of metal attached to the back of the pulley. Figure out which way you need to turn the bolt to move the pulley toward the front of the car. (i don't remember if it's right hand thread, or left hand) This puts extra tension on the belt. You probably don't need much. Over tensioning the belt can cause pulley bearing failure. If you haven't done this work before, ask someone for help. It's better to tighten a little bit, a few times rather than overtighten once. 3) Don't forget to ReTighten the bolt in the center of the pulley.
If there's lots of cracks and pieces missing on the ribs or grooves of the belt you should replace it first.
Belt turns alternator, alternator charges battery.(no belt, no charging) Charge battery with a charger. Though it may start with a jump, the alt is designed to maintain the state of charge in the battery, not to fully charge it . Therefore jumping puts too much demand on alt and can damage it. or will shorten battery life considerably.
The noise is most likely the serpentine belt. Check it's condition and that of the belt tensioner. It sounds like the belt is slipping, causing the squealing noise u describe. As the belt warms up, it's getting a better 'grip' and the noise stops. Turning on the heat also turns on the a/c in newer cars, this added drag on the belt (one more component to turn, the a/c compressor) would explain why it happens when u turn on the heat. Is the belt original? If yes, it's time to change it, and check the belt tensioner to make sure it's doing it's job of keeping the belt snug on all the pulleys. Let me know how u make out.