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Old 04-06-2009, 10:30 AM   #1
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Squealing Engine...Driving me crazy!

Recently my engine (upon startup) has been putting off a high pitched squeal. Originally the squeal was going away after the engine warmed up, but now it's squealing upon startup even when the engine is warm. The belt looks to be in good condition.....Any ideas would be appreciated.

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Old 04-06-2009, 11:11 AM   #2
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Replace your fan belt and keep the old as a spare.

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Old 04-06-2009, 11:25 AM   #3
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If it's not super loud it might be a vacuum leak. Those are usually described as more of a whistle though.
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Old 04-06-2009, 11:49 AM   #4
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It might be the "low blinker fluid" indicator......it emits a squealing to warn of low fluid. I'd check that first.
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Old 04-06-2009, 01:03 PM   #5
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x2 on the blinker fluid.. its a notorious problem with the tjs
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Old 04-06-2009, 01:08 PM   #6
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would it help to have synthetic blinker fluid??
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Old 04-06-2009, 01:11 PM   #7
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no that will cause your headlight fluid relay to trip..
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Old 04-06-2009, 01:14 PM   #8
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You could be losing a bearing on one of the accessories or the belt tensioner.
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Old 04-06-2009, 01:58 PM   #9
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Thanks 4Point...that is something a will check into....of course after I check the notorious "low blinker fluid indicator", flush the system and add "synthetic blinker fluid", while being careful not to trip the "headlight fluid relay".
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Old 04-06-2009, 02:08 PM   #10
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I had the squealing too, replaced the belt, tensioner pulley, and the idler pulley all at the same time so I do not know which one was the exact problem, but it did fix the problem. The pulleys are pretty cheap, that is why I replaced them at the same time as the belt.

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Old 04-06-2009, 02:14 PM   #11
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Thanks Scooby.
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Old 04-06-2009, 02:20 PM   #12
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could be alternator or water pump going bad also.
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Old 04-06-2009, 02:27 PM   #13
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Without hearing the noise, it's tough for anyone to say, but even with the belt in good condition, it could still be squealing. Maybe some of that belt lube spray that they make would help? I have an '07 Caliber that I drive daily and the belt started squealing on me all of the time, so I sprayed that belt lube on there a couple times (the first application didn't stop it for good) and I haven't had a problem in months.
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Old 04-06-2009, 02:29 PM   #14
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try tightening up your belt tensioner. I'm had the same problem with mine and it helped quell that problem.
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Old 04-06-2009, 02:30 PM   #15
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Without hearing the noise, it's tough for anyone to say, but even with the belt in good condition, it could still be squealing. Maybe some of that belt lube spray that they make would help? I have an '07 Caliber that I drive daily and the belt started squealing on me all of the time, so I sprayed that belt lube on there a couple times (the first application didn't stop it for good) and I haven't had a problem in months.
no this is a perfect example of a belt needing replacement. if your tensioner doesnt help it out then replace it.
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Old 04-06-2009, 02:48 PM   #16
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my belts has less than 1000 miles on it and i get a squeek on startup..
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Old 04-06-2009, 03:01 PM   #17
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I wouldn't mind a squeal at startup, but mine stays on for awhile until I give it gas and then it starts back up when I let off the gas and and push in the clutch to stop. I'll pull the belt off tonight and check it over for any cracks and check out if there is any play in any of the pulleys and/or the fan. I'll let you guys know how I make out. Thanks for the help.
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Old 04-06-2009, 03:12 PM   #18
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A bar of soap rubbed against the fan belt while it is running will usually stop the noise for some time. (just be carefull to not take your hand off like holding the soap on it.) If it solves the problem put a new belt on. If it doesnt is something else.
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Old 04-06-2009, 04:46 PM   #19
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Your belt isn't tight enough.
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Old 04-07-2009, 08:55 AM   #20
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I believe you are right gmarchant...I checked it last night and it seems a bit too loose (according to a friend of mine who is a mechanic). I'll have to manually adjust the tension, but I believe for piece of mind I will replace the belt first, then adjust the tension. Hopefully that will take care of the annoying squeal!
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Old 04-10-2009, 04:27 PM   #21
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Well, I removed the old belt, checked for any play in the pulleys and installed the new belt. After tightening everything up, I started the engine up and it started squealing again! The only thing else that I can think of is pulling the belt back off and spinning the alternator pulley and the power steering pulley to see if they spin freely....maybe one of them is on its way out?

Any other suggestions?
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Old 04-12-2009, 04:49 PM   #22
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Well, after pulling, cleaning and inspecting all of the pulleys, replacing the belt, and adding a Lucas ps additive, I still had the annoying squeal! I then pulled the fan and fan clutch off and installed the pulley on without the fan to determine whether the fan clutch was the problem...again no dice.

After putting everything back together I started the engine and while listening to the squeal, I pushed on the air box on top of the intake manifold and the squeal tone changed. It turned out that the intake manifold wasn't tight enough and air was being sucked between the manifold and the engine! Tightened it up and no more squeal!!!!

Thanks for everyones help.
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Old 04-12-2009, 05:06 PM   #23
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so i have been around cars all my life and i have never heard of blinker fluid. what is that?
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Old 04-12-2009, 09:27 PM   #24
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Well, after pulling, cleaning and inspecting all of the pulleys, replacing the belt, and adding a Lucas ps additive, I still had the annoying squeal! I then pulled the fan and fan clutch off and installed the pulley on without the fan to determine whether the fan clutch was the problem...again no dice.

After putting everything back together I started the engine and while listening to the squeal, I pushed on the air box on top of the intake manifold and the squeal tone changed. It turned out that the intake manifold wasn't tight enough and air was being sucked between the manifold and the engine! Tightened it up and no more squeal!!!!

Thanks for everyones help.
Good find! Its funny how noises will transmit around the jeep or just fool ya as yours did.
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Old 11-19-2014, 09:05 AM   #25
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So I'm getting a squeaking sound coming from my engine and it just started with the cold snap that we had here in ohio. The only thing is that the squeak increases as the engine reves and it follows the rpms of my engine. Everything is brand new including the engine with only about 500 miles on everything. Any ideas?
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Old 11-19-2014, 10:08 AM   #26
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So I'm getting a squeaking sound coming from my engine and it just started with the cold snap that we had here in ohio. The only thing is that the squeak increases as the engine reves and it follows the rpms of my engine. Everything is brand new including the engine with only about 500 miles on everything. Any ideas?
have you listened to it from the engine compartment? It could be a few things. A belt, a pulley, power steering pumps sometimes make noises when cold. I took the decorative cover off the top of the engine once and didn't get it seated down all the way and it was making a squeaking sound as it rubbed against the bottom of the hood.
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Old 11-19-2014, 12:04 PM   #27
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I tried to hear where it was coming from but I couldn't find where it's is coming from exactly. It sounds like a pulley but would that explain why it increases with the engine rpms?
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Old 11-19-2014, 12:16 PM   #28
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With the engine idling and squealing, pour some water directly on the belt. If it stops squealing, you know it's your belt. It might need to be replaced, but if it has a manual tightening adjuster (not a spring tensioner), you might try to tighten the belt.

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