Advice: sound of bad bearing 4-cyl engine

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Old 11 Apr 2006, 01:46 pm   #1 (permalink)
geronimo
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Default Advice: sound of bad bearing 4-cyl engine

It's a 1988 Toyota Camry 4-cyl. Has 197000 miles on it. The engine
runs fine, but there is a bad bearing somewhere in/on the engine. You
can hear it plainly at idle. Its the tell-tale whir/rattle of a
worn-out bearing. Well, could be wrong, but sure sounds like it. Its
not the fans, not the alternator, not the AC compressor, so it seems
to be something internal to the engine. It's the sound of a DRY
bearing, so I don't think it would be a bad crankshaft bearing. What
is it likely to be? Perhaps its a timing belt idler.
Also I need to know if the valves are damaged if the timing belt
breaks on this engine? Just bought the car, don't have any idea when
it was last changed, if ever. Might be wise to pre-emptively replace
it?
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Old 11 Apr 2006, 03:15 pm   #2 (permalink)
onehappymadman@yahoo.com
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Default Re: Advice: sound of bad bearing 4-cyl engine

Water pump maybe? Has it been changed recently / ever?

Watch your coolant levels carefully...


geronimo wrote:
> It's a 1988 Toyota Camry 4-cyl. Has 197000 miles on it. The engine
> runs fine, but there is a bad bearing somewhere in/on the engine. You
> can hear it plainly at idle. Its the tell-tale whir/rattle of a
> worn-out bearing. Well, could be wrong, but sure sounds like it. Its
> not the fans, not the alternator, not the AC compressor, so it seems
> to be something internal to the engine. It's the sound of a DRY
> bearing, so I don't think it would be a bad crankshaft bearing. What
> is it likely to be? Perhaps its a timing belt idler.
> Also I need to know if the valves are damaged if the timing belt
> breaks on this engine? Just bought the car, don't have any idea when
> it was last changed, if ever. Might be wise to pre-emptively replace
> it?


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Old 11 Apr 2006, 03:41 pm   #3 (permalink)
geronimo
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Default Re: Advice: sound of bad bearing 4-cyl engine


Ill check it carefully for leakage. Is the water pump hard to change
on this car?

On 11 Apr 2006 13:15:41 -0700, onehappymadman@yahoo.com wrote:

>Water pump maybe? Has it been changed recently / ever?
>
>Watch your coolant levels carefully...
>
>
>geronimo wrote:
>> It's a 1988 Toyota Camry 4-cyl. Has 197000 miles on it. The engine
>> runs fine, but there is a bad bearing somewhere in/on the engine. You
>> can hear it plainly at idle. Its the tell-tale whir/rattle of a
>> worn-out bearing. Well, could be wrong, but sure sounds like it. Its
>> not the fans, not the alternator, not the AC compressor, so it seems
>> to be something internal to the engine. It's the sound of a DRY
>> bearing, so I don't think it would be a bad crankshaft bearing. What
>> is it likely to be? Perhaps its a timing belt idler.
>> Also I need to know if the valves are damaged if the timing belt
>> breaks on this engine? Just bought the car, don't have any idea when
>> it was last changed, if ever. Might be wise to pre-emptively replace
>> it?


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Old 11 Apr 2006, 03:43 pm   #4 (permalink)
onehappymadman@yahoo.com
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Default Re: Advice: sound of bad bearing 4-cyl engine

If you have to ask, it probably is...

Put it this way - I personally would have my mechanic do it. I'm still
a beginner, I'd say.

But if your water pump is leaking coolant... you're looking at major
radiator and engine damage - expensive.


geronimo wrote:
> Ill check it carefully for leakage. Is the water pump hard to change
> on this car?
>
> On 11 Apr 2006 13:15:41 -0700, onehappymadman@yahoo.com wrote:
>
> >Water pump maybe? Has it been changed recently / ever?
> >
> >Watch your coolant levels carefully...
> >
> >
> >geronimo wrote:
> >> It's a 1988 Toyota Camry 4-cyl. Has 197000 miles on it. The engine
> >> runs fine, but there is a bad bearing somewhere in/on the engine. You
> >> can hear it plainly at idle. Its the tell-tale whir/rattle of a
> >> worn-out bearing. Well, could be wrong, but sure sounds like it. Its
> >> not the fans, not the alternator, not the AC compressor, so it seems
> >> to be something internal to the engine. It's the sound of a DRY
> >> bearing, so I don't think it would be a bad crankshaft bearing. What
> >> is it likely to be? Perhaps its a timing belt idler.
> >> Also I need to know if the valves are damaged if the timing belt
> >> breaks on this engine? Just bought the car, don't have any idea when
> >> it was last changed, if ever. Might be wise to pre-emptively replace
> >> it?


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Old 11 Apr 2006, 04:37 pm   #5 (permalink)
Daniel
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Default Re: Advice: sound of bad bearing 4-cyl engine

Most likely an idler or tensioner bearing for the timing belt.

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Old 11 Apr 2006, 06:08 pm   #6 (permalink)
Maim Menu
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Default Re: Advice: sound of bad bearing 4-cyl engine

It's your waterpump.

I had exactly the same thing on my '98 it sounded like say, a really
****ed up skateboard wheel on the left hand side of the engine, coming
from the timing belt compartment. Then I waited too long and the pump
bearing jammed up on me, chewing up the timing belt and requiring me to
be broke for a while.

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Old 12 Apr 2006, 11:53 am   #7 (permalink)
Daniel
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Default Re: Advice: sound of bad bearing 4-cyl engine

Harder than you'd expect.
There are a number of things you would need to know, plus a few special
tools.
If you're going to change the water pump you should also plan on
changing the timing belt, idler pulleys, and seals.
You may be able to find tutorials on the web if you look around.
I downloaded probably twenty or more photos of how it's done on your
model, but don't have the site anymore. If you want to post your e-mail
I could send them.

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Old 12 Apr 2006, 11:58 am   #8 (permalink)
onehappymadman@yahoo.com
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Default Re: Advice: sound of bad bearing 4-cyl engine


Daniel wrote:
> Harder than you'd expect.
> There are a number of things you would need to know, plus a few special
> tools.
> If you're going to change the water pump you should also plan on
> changing the timing belt, idler pulleys, and seals.


Wow, I didn't know that! When my water pump died, I took it to the
stealership with a coupon for a "timing belt change" to drop the price
some, still paid several hundred $$$, and I'm certain the stealership
didn't change any of my seals... probably didn't change idler pulleys
either.

And after they did all that work, my car wouldn't start the next
morning. The cause? They didn't tighten the positive terminal on my
battery!!!

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Old 12 Apr 2006, 12:14 pm   #9 (permalink)
geronimo
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Default Re: Advice: sound of bad bearing 4-cyl engine


Send the pics on how to do it, by all means. Yea, I am going to
change all those items at same time.

Jamesw@grandecom.net







On 12 Apr 2006 09:53:38 -0700, "Daniel" <nospampls2002@yahoo.com>
wrote:

>Harder than you'd expect.
>There are a number of things you would need to know, plus a few special
>tools.
>If you're going to change the water pump you should also plan on
>changing the timing belt, idler pulleys, and seals.
>You may be able to find tutorials on the web if you look around.
>I downloaded probably twenty or more photos of how it's done on your
>model, but don't have the site anymore. If you want to post your e-mail
>I could send them.


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Old 12 Apr 2006, 12:18 pm   #10 (permalink)
geronimo
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Default Re: Advice: sound of bad bearing 4-cyl engine

YOu just might be right. FOr now it is pumping fine, keeping engine at
normal temp, no leak. But I will replace before I start driving it.
Thanks all!


On 11 Apr 2006 16:08:51 -0700, "Maim Menu" wrote:

>It's your waterpump.
>
>I had exactly the same thing on my '98 it sounded like say, a really
>****ed up skateboard wheel on the left hand side of the engine, coming
>from the timing belt compartment. Then I waited too long and the pump
>bearing jammed up on me, chewing up the timing belt and requiring me to
>be broke for a while.
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