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Old 01-02-2011, 09:45 PM   #1
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Horrible Noise Coming From My Engine!

Just went out for some mudding today with another WF member (Work4Mud) and when I got back into town and turned the Jeep off, when I went to turn it back on again I began to hear a very high pitched squeaking noise coming from the radiator fan area. I've heard that sometimes if mud gets on the fan it will tilt the blades into the radiator and I think the radiator is almost brand new so I don't want to ruin it. I can post a video to let y'all hear the sound and see if I may be wrong about it being the fan cuz we did hit one extra deep mud hole and I may have flooded the front diff. I just don't want this to turn out to be a major problem that'll cost a lot to fix since I'm currently on a job hunt and have no money whatsoever. Any advice you can give would be greatly appreciated. Thank you in advance!

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Old 01-02-2011, 09:50 PM   #2
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I'd check the belt 1st, check the belt tensioner...if those are ok it might be the power steering pulley....went thru that this last summer...changed the tensioner 1st, ended up being the new belt I'd put on b4 I went dune busting the month before..at least in my case...

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Old 01-02-2011, 09:57 PM   #3
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How would I go about checking those belts out? Because the noise starts when I turn the engine on but if I get it going and push it hard enough around 3,000 RPM then it will stop. I just hate having to rev the engine so hard just to get rid of that annoying squeal. I'm going to be doing lots of maintenance tomorrow cuz found out the oil in it is roughly the consistency of melted chocolate so I'll be under the rig probably all day.
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Old 01-03-2011, 06:41 AM   #4
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just push down on the belt midway between pullys with your index finger,it needs to be firm when you push on it, there is a belt tensioner tool that can be used,local auto parts store may have it as a loaner tool,but to me thats getting a little to technical. If you have very little experience with belts it may be a good idea to go to the store and put the tensioner measureing tool on it,so when you get the correct tension on the belt you can push on the belt with your finger to get an idea on how firm it should be.
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Old 01-03-2011, 06:44 AM   #5
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x2 on the belt.
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Old 01-03-2011, 07:10 AM   #6
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Have to agree.... Belt.
Work for a construction co. and we've had issues with different brands of serpentine belts squealing like hell when they are wet.. Not sure if they swell or what but the sides seem to rub in the pulleys. If the tension is right try some belt dressing..... have even resorted to rubbing an old candle on the edges (for the cheap fix).
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Old 01-03-2011, 07:58 AM   #7
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clean it, clean it, clean it. Probably some gritty stuff in there on the belt or the pulley. The longer the dirt is in there the more it will sand away at your parts like sandpaper. If cleaning does not help entirely, spray it with belt dressing after it is clean and that will make it sticky again. If it is stretched like mentioned above, just replace it. But keep the new one clean

After mudding you always want to hit a power wash and blow out these key areas to save some headache;

1. belts (all kinds of noises can come from them with dirt in there...)
2. Nerf bars (if you have family and friends who slide the backs of their legs on them to get out)
3. The insides of each wheel and brake components (run w/mud on your brakes and you'll burn up your pads a lot faster) I've also seen a ranger that had a small stone get trapped between the brake shield and the rotor. Damn that thing would grind loud for being a little tiny rock! It will also make your wheels bounce like hell on the hi-way if you have extra wheel weights made out of rock/dirt clumps.
4. Front/back of the radiator. This is where all the heat dissapates, keep it clean and it stays cooler.
5. Drive shafts. Spray 'em both to prevent a stupid jumping wobble from a dried clump of mud left over...

Aside from that, you always want to check under your air filter after a day of crazy mudding to ensure has not sucked anything into the air chamber.
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Old 01-03-2011, 01:36 PM   #8
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Alright. thanks guys. just hit a car wash today and sprayed the whole engine bay out. hit the radiator a couple times too just to make sure all the mud was gone. and it was the serpentine belt. once i washed down the engine it was purring like a kitten. and i checked the air cleaner box several times the other day thanks to advice from Work4Mud (fellow WF member who tore up some trails with me this weekend) it was nice and dry and couldn't see any dried mud in there. Now my jeep is nice and shiny and ready for a hard week of wheeling. Thanks again guys. And also on the brakes I'm going to be putting some new pads on soon anyways because they are squeaking pretty bad when i come to a stop and judging by the sludgy oil and coolant I'm gonna need to do a lot of maintenance on this thing to get her running solid.
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Old 01-03-2011, 02:32 PM   #9
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good deal! Glad she's purring again!!!

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