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If the problem is a worn wheel bearing, then you’re hearing a knocking noise because the bearing isn’t rotating as freely as it should. A bad tire can cause a knocking or thumping noise, too. To be more specific:

Luckily, this was caught and repaired before that softened belt decided to strip or break on an interference fit engine.

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Jun 30, 2020 — Bad Wheel Bearing ... A grinding noise that seems to come from one of the tires, possibly accompanied by shaking sensations of varying intensity, ...

I do my own timing belt/water pump changes and sometimes if the water pump isn’t extremely old I’ll skip the pump and just do the timing belt to save time and has always worked out fine, but I have a non interference engine and if the water pump seizes and damages the belt there’s no other damage except the belt. If my car had an interference engine as yours does I’d never skip the water pump for fear of destroying the engine if it failed. If I were paying someone $75-$100 per hour to work on my car I’d also go ahead and have the water pump replaced while 80% of the work is already finished instead of risking having to pay someone twice.

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Can you changewater pumpwithout removingtiming belt

You may also trace this noise to a loose pinion-bearing preload. It’s likely the case when you only hear the noise when decelerating.

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Timing belt and water pumpsymptoms

If the issue is a worn wheel bearing, you’d typically hear this noise while cornering or making sharp turns with moderate speed. A bad CV joint can be heard at low speeds with the steering wheel all the way to one side or the other. It can’t hurt to check both the wheel bearings and CV joint(s).

If you’re replacing a bad wheel hub bearing, you want to make sure that your techs use high quality replacement parts. Using high quality replacement parts:

Chevywater pump and timing belt

It is interesting how often people here tell posters to follow the manufacturers recommendation on oil changes, etc. But when the manufacturer says inspect water pump and do not replace if it passes, no one wants to talk about the manufacturer’s recommendation

Water pump BeltPrice

Yes, they should replace the water pump, tensioner, etc. You have an interference motor meaning that a broken belt bends valves and pistons which in effect kills the motor.

Will the old water pump stay or will it go. There is a sort of “Clash” here. If it goes, there could be trouble; if it stays it could be double.

And as UncleTurbo also mentioned, a new timing belt tensioner is a must. Most places will do this as a matter of course, but not all.

Well, I don’t see the inconsistency there. Don’t do less than the manufacturer says. It’s OK, and sometimes wise, to do more than the manufacturer says.

Should you replacewater pumpwithtimingchain

If you’re still not sure whether the issue lies in the tires or one of the wheel bearings, check out the most common symptoms of each issue:

The best way to figure out the cause of this noise is to check the tires first. If the tires look good, then check the wheel bearings.

Water pump and timing beltreplacement cost

It all depends on trust. How long will the bearing in the water pump last? Nobody knows when it will fail. We don’t know how long the seals will last either.

If the noise is more “growly”, then the issue is likely a bad wheel bearing. The noise may become louder the faster you drive.

It can be hard to figure out if the noise is caused by a wheel bearing or a tire. There’s something you can try, though. Turn the steering wheel slightly to the left or right. If the noise gets worse, then it’s likely one of the wheel bearings.

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If the wheel bearing and tires look good, you may want to check the drivetrain. Sometimes a humming or growling noise is a sign of an issue within the drivetrain.

If you’re hearing this noise, the issue may be a bad wheel bearing. To confirm it, change the speed of the vehicle. If the noise becomes worse the faster you drive, then it’s almost certainly a bad wheel bearing. If the noise remains the same, then the issue may be the tires instead.

I think it all comes down to how risk-averse you are. Personally, I would replace the water pump, serpentine belt, timing belt, and all belt tensioners at the same time. Paying a bit more at this point could wind up saving you money over the long term.

I agree with the others. I have seen too many people gamble on this one and lose, and sometimes the loss is their engine. To quote the old Fram commercials: “pay a little more now, or pay a lot later” (even though I prefer to pay a little more still for a Purolator or Wix filter).

Replacetiming belt and water pumpHonda Pilot

In extreme cases, a failed wheel bearing can cause abnormal tire wear. When that happens, the noise you’re hearing is caused by both a bad wheel bearing and a worn tire.

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The last Mitsubishi my daughter owned (bought used) had a recent timing belt replacement and the tensioners and water pump had been determined to be fine at that time. (Daughter waded into this without talking to me first.) Not many months later (less than a year) I determined that the tiny coolant leak on the garage floor was due to a leaking water pump and after removing the upper belt cover found the new belt was saturated and softened with coolant. So, I tear it all apart and redo it correctly this time.

A worn wheel bearing can cause a howling noise. If you’re also hearing a rumbling noise when turning, then it’s likely a bad wheel bearing.

Toyota recommends INSPECTING THE WATER PUMP when the timing belt is replaced. And, they do not replace it if it passed the inspection criterion. My Sienna is due soon for timing belt. The first change, I asked about the water pump, and the dealer told me Toyota recommended inspection. They also said a lot of people wanted it replaced, and they will do it if requested even though they realize it does not need to be changed.

The timing belt is driven by the water pump?? I thought it was driven by the crankshaft. In fact, those of you who say that it is driven by the pump have to be wrong, as there is no way to get the timing right from the pump.

The noise may be the result of an under-inflated tire or improperly aligned tires. These issues cause part of the tires (or one tire) to be scrubbing on the pavement. That causes a squealing noise.

However, you may like gambling on the chance that the water pump will not develop problems while you own the car. That could turn out to be a good bet, or it could turn out to be a costly one. After all, you are now about 3 1/2 years late on replacing the timing belt, so maybe you will luck out with the water pump the same way that you have lucked out with the timing belt.

We put together this noise guide to save you some labor time. You can have your technicians find the noise that best describes what they’re hearing in the list below. From there, they may be able to figure out what the issue is.

I the reason most people suggest changing the water pump when replacing the timing belt (myself included) is because while the timing belt is off it only takes a short time to replace the water pump and if it’s an interference engine it’s just extra insurance. I know I’ve skipped water pump replacement a few times on non interference engines and have them go out before the next timing belt change interval. In a case where the person is having to pay a mechanic to do work, they end up paying labor twice if this happens. Years ago when water pumps were driven by V belts I’ve checked water pumps for play in the bearing when replacing the V belt only to have the bearing go out shortly afterward causing the water pump to start leaking. I was recently replacing the timing belt on my '02 Ford Escort and even though the water pump bearing checked good I replaced the water pump. The extra costs for a lifetime warranty water pump was under $50. and added about an extra hour to the time it took me to do the job where if I’d had to start from scratch to do the water pump at a later time it would have taken 4-6 hours to disassemble, replace the water pump and reassemble everything.

What are the symptoms of bad wheel bearings · Noise: A humming, rumbling or growling noise that increases with acceleration or as the vehicle turns. · Looseness, ...

Since the water pump is driven by the timing belt, if you don’t replace the pump now, and if it starts leaking later, you will wind up paying essentially the same labor costs later that you are paying now for timing belt replacement. Or, in other words, if you get the water pump replaced proactively at the same time as the timing belt, you will pay little labor cost for the water pump’s replacement. If you are planning on keeping this car for more than another year, I would say that this would be economically prudent.

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Hi, I have a 1999 Honda Accord V6 with 101,000 miles - I am the second owner and the car was meticulously maintained and garage kept by the original owners. I need to have the timing belt replaced and am wondering if I should have the water pump and/or other parts replaced during this repair? Economic prudence is of the essence. thank you.

Water pump and timing beltreplacement

An old water pump can go bad, start to leak, or even worse the bearing in the pump can give out and lock up the pump and shred the belt. A bad tensioner can come apart and shred the belt. A shredded belt breaks and your motor is toast.

What do you do when a customer brings you a vehicle with a roaring or howling noise coming from a wheel? In most cases, it can be coming from a worn tire, or a worn bearing. It is not easy to tell, but there are ways to determine what is causing the problem.

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It is interesting how often people here tell posters to follow the manufacturers recommendation on oil changes, etc. But when the manufacturer says inspect water pump and do not replace if it passes, no one wants to talk about the manufacturer’s recommendation