Sonata 95 v6 engine noise

  • Thread starter Thread starter Mikito Harakiri
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Mikito Harakiri

My Sonata 95 V6 started to sound like a race car on low RPM (<2200).
I'm not 100% sure though if it's an engine, as the noise is smaller
when engine runs in neutral (or parking) gear. Thank you for any
hints.
 
My Sonata 95 V6 started to sound like a race car on low RPM (<2200).
I'm not 100% sure though if it's an engine, as the noise is smaller
when engine runs in neutral (or parking) gear. Thank you for any
hints.
Click to expand...

If you mean it emits a high pitched whine then my 98 Sonata has the
same problem at first startup each day. I have tried two dealers and
neither can tell me what it may be. The sound starts at 1500 rpm and
stops at 2000rpm. It happens for maybe a minute or two then disappears
for the rest of the day. Happens every day. If you get an answer I
would love to know what it was.


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Harvey said:
If you mean it emits a high pitched whine then my 98 Sonata has the
same problem at first startup each day. I have tried two dealers and
neither can tell me what it may be. The sound starts at 1500 rpm and
stops at 2000rpm. It happens for maybe a minute or two then disappears
for the rest of the day. Happens every day. If you get an answer I
would love to know what it was.
Click to expand...

It still had 3.0 liters Mitsubishi engine that year, right?

Well, my problem is quite the opposite: the engine is calm when cold.
It sounds like a motorcycle when hot in the 1500-2200 rpm range.
Especially, when I press the gas pedal. Can I reprogram the cooling
system to cool it more? (Couple of years ago I asked the mechanic to
lower the cooling a little bit, because in the cold climate cooling
indicator was sitting into the blue when running at highway speed).

On the other hand, I discovered that there was no transmission oil.
Adding it didn't fix the problem, though.
 
It still had 3.0 liters Mitsubishi engine that year, right?

Well, my problem is quite the opposite: the engine is calm when cold.
It sounds like a motorcycle when hot in the 1500-2200 rpm range.
Especially, when I press the gas pedal. Can I reprogram the cooling
system to cool it more? (Couple of years ago I asked the mechanic to
lower the cooling a little bit, because in the cold climate cooling
indicator was sitting into the blue when running at highway speed).

On the other hand, I discovered that there was no transmission oil.
Adding it didn't fix the problem, though.
Click to expand...

Yes... mine is the early 98 model with the 3lt engine.

I guess no transmission oil may have had a little to do with it.
Refilling may be a little too late to prevent the damage.
My car has had ongoing transmission problems since I bought it.
Transmission had to be stripped when it was less than 1 year old as
seals had collapsed. No matter how many times I have leaks repaired
they tend to return within a month or two.
It rattles like a diesel on some days and on other is relatively quiet
- this seems to be sticking lifters (I have had 4 lifters replaced
over the last 18 months but it continues at random so have given up on
that - it did fix the collapsed ones but it continues to rattle some
days).
Sorry I can't be of any help but I guess this is just one of the many
problems of owning an older Hyundai.


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