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Today's topics:
* Engine Temperature Problem? 1999 Sentra 2.0 - 2 messages, 2 authors
http://groups.google.com/group/alt.autos.nissan/t/54a063b2d0a4fdd0?hl=en
* Strange new noise - 2 messages, 2 authors
http://groups.google.com/group/alt.autos.nissan/t/d6e4aec8892236ed?hl=en
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TOPIC: Engine Temperature Problem? 1999 Sentra 2.0
http://groups.google.com/group/alt.autos.nissan/t/54a063b2d0a4fdd0?hl=en
==============================================================================
== 1 of 2 ==
Date: Wed, Jun 23 2010 8:37 pm
From: "DanielleOM"
"E. Meyer" <epmeyer50@msn.com> wrote in message
news:C847E09C.1C9D4%epmeyer50@msn.com...
> On 6/23/10 2:46 PM, in article hvtoba$lp$1@news.eternal-september.org,
> "DanielleOM" <danielle.e@reply.to.group.com> wrote:
>
>>
>>
>> Just wondering if I have a problem or not.
>>
>> Normally I see my temperature gauge at approximately the 8 o'clock
>> positon.
>>
>> While driving at highway speed 65 mph this afternoon I saw the gauge move
>> just shy of the 9 o'clock position. I also noticed some preignition
>> sounds
>> while accelerating.
>>
>> I quickly opened the windows, turned the heater on the gauge quickly
>> moved
>> back to the 8 o'clock position.
>>
>> After getting a little warm myself I turned the AC back on and closely
>> watched the gauge. It did seem to stabilize at that position just shy of
>> 9
>> o'clock.
>>
>> I also noted the temperature gauge returned to the 8 o'clock postion when
>> I
>> got of the highway and was moving at 35 mph. (with ac running)
>>
>>
>> Think there's anything to be concerned about? Memory must be going.
>> Can't
>> remember where it stabilized at last summer.
>>
>>
>> Thanks
>>
>> Danielle
>>
> Its not a reason for concern if it moves a little but stays in the normal
> temperature range. If it never moved before, you need to check the
> radiator.
>
> First thing in the morning before you first start the car (you don't want
> to
> be doing this when the engine is hot), check that the fluid level in the
> overflow tank is between the "min" & "max" level (there are marks on the
> side of the tank). If not, add 50% mix of antifreeze & water to get it to
> the max level. Then open the radiator cap and look in there. It should
> be
> completely filled to the top, no air space. If its not, add 50%
> antifreeze
> mix in there as well.
>
> If the radiator was low, then you need to start paying attention to it to
> see if it is losing coolant on a regular basis or was just a one time
> event.
> Check it every morning for a couple of weeks. If it stabilizes after a
> few
> days, then don't worry about it. If you keep having to add to either the
> radiator or the overflow tank, then get it checked for leaks.
>
Thanks. I see radiator was flushed last year. Radiator was changed in
2005. Hopefully they don't fail every 5 years. Wonder if they really
designed it for the 2 litre engine.
Danielle
== 2 of 2 ==
Date: Fri, Jun 25 2010 7:14 am
From: "E. Meyer"
On 6/23/10 10:37 PM, in article hvuju1$2su$1@news.eternal-september.org,
"DanielleOM" <danielle.e@reply.to.group.com> wrote:
>
> "E. Meyer" <epmeyer50@msn.com> wrote in message
> news:C847E09C.1C9D4%epmeyer50@msn.com...
>> On 6/23/10 2:46 PM, in article hvtoba$lp$1@news.eternal-september.org,
>> "DanielleOM" <danielle.e@reply.to.group.com> wrote:
>>
>>>
>>>
>>> Just wondering if I have a problem or not.
>>>
>>> Normally I see my temperature gauge at approximately the 8 o'clock
>>> positon.
>>>
>>> While driving at highway speed 65 mph this afternoon I saw the gauge move
>>> just shy of the 9 o'clock position. I also noticed some preignition
>>> sounds
>>> while accelerating.
>>>
>>> I quickly opened the windows, turned the heater on the gauge quickly
>>> moved
>>> back to the 8 o'clock position.
>>>
>>> After getting a little warm myself I turned the AC back on and closely
>>> watched the gauge. It did seem to stabilize at that position just shy of
>>> 9
>>> o'clock.
>>>
>>> I also noted the temperature gauge returned to the 8 o'clock postion when
>>> I
>>> got of the highway and was moving at 35 mph. (with ac running)
>>>
>>>
>>> Think there's anything to be concerned about? Memory must be going.
>>> Can't
>>> remember where it stabilized at last summer.
>>>
>>>
>>> Thanks
>>>
>>> Danielle
>>>
>> Its not a reason for concern if it moves a little but stays in the normal
>> temperature range. If it never moved before, you need to check the
>> radiator.
>>
>> First thing in the morning before you first start the car (you don't want
>> to
>> be doing this when the engine is hot), check that the fluid level in the
>> overflow tank is between the "min" & "max" level (there are marks on the
>> side of the tank). If not, add 50% mix of antifreeze & water to get it to
>> the max level. Then open the radiator cap and look in there. It should
>> be
>> completely filled to the top, no air space. If its not, add 50%
>> antifreeze
>> mix in there as well.
>>
>> If the radiator was low, then you need to start paying attention to it to
>> see if it is losing coolant on a regular basis or was just a one time
>> event.
>> Check it every morning for a couple of weeks. If it stabilizes after a
>> few
>> days, then don't worry about it. If you keep having to add to either the
>> radiator or the overflow tank, then get it checked for leaks.
>>
>
>
> Thanks. I see radiator was flushed last year. Radiator was changed in
> 2005. Hopefully they don't fail every 5 years. Wonder if they really
> designed it for the 2 litre engine.
>
> Danielle
>
There are other things besides the radiator that are getting old - hoses,
heater core, etc. If it is losing coolant, the whole cooling system would
need to be checked.
==============================================================================
TOPIC: Strange new noise
http://groups.google.com/group/alt.autos.nissan/t/d6e4aec8892236ed?hl=en
==============================================================================
== 1 of 2 ==
Date: Thurs, Jun 24 2010 8:30 pm
From: Plague Boy
Well. The '92 Sentra has been running fine and I'm hoping to get
another 1-2 years before it completely rusts out and has to be
junked. But it's making a funny noise now.
I first noticed it last weekend, it slipped my mind until I
drove again today. It's a little hard to describe, it's like when
you pull the compression release on a motorcycle, or a cricket-a
trilling cricket, not a chirping cricket. The noise is "outside"
because I only hear it when the windows are open and it has
something to reflect off of.
I *only* notice it when I am decelerating, and it changes
frequency with the RPMs of the engine, not the road speed. If I
depress the clutch, it goes away. If I step on the gas, it goes away.
I guessing it only is noticeable under high engine vacuum. So,
some kind of vacuum leak? Could a loose exhaust cause this kind
of sound? I've had exhaust problems with this car.
I popped the hood and revved the engine and did a quick visual
inspection of the engine compartment. No noise, and no visible
problems.
I will look further, but I'm not sure how to duplicate a sound
that only is noticeable when the motor is driven by the wheels.
Thought somebody here might have a clue to get me in the right
direction.
'92 Nissan Sentra, 1.6L, 5sp man, 177K AC PS PB
--
PB
"I suspect you're an arrogant little pissant who grew up in the
Red Bull generation." - CJW
== 2 of 2 ==
Date: Fri, Jun 25 2010 7:20 am
From: "E. Meyer"
On 6/24/10 10:30 PM, in article
xLWdnd1vLtcmv7nRnZ2dnUVZ_tadnZ2d@earthlink.com, "Plague Boy"
<plague_boy@earthlink.net> wrote:
> Well. The '92 Sentra has been running fine and I'm hoping to get
> another 1-2 years before it completely rusts out and has to be
> junked. But it's making a funny noise now.
>
> I first noticed it last weekend, it slipped my mind until I
> drove again today. It's a little hard to describe, it's like when
> you pull the compression release on a motorcycle, or a cricket-a
> trilling cricket, not a chirping cricket. The noise is "outside"
> because I only hear it when the windows are open and it has
> something to reflect off of.
>
> I *only* notice it when I am decelerating, and it changes
> frequency with the RPMs of the engine, not the road speed. If I
> depress the clutch, it goes away. If I step on the gas, it goes away.
>
> I guessing it only is noticeable under high engine vacuum. So,
> some kind of vacuum leak? Could a loose exhaust cause this kind
> of sound? I've had exhaust problems with this car.
>
> I popped the hood and revved the engine and did a quick visual
> inspection of the engine compartment. No noise, and no visible
> problems.
>
> I will look further, but I'm not sure how to duplicate a sound
> that only is noticeable when the motor is driven by the wheels.
> Thought somebody here might have a clue to get me in the right
> direction.
>
> '92 Nissan Sentra, 1.6L, 5sp man, 177K AC PS PB
If it still has any of the heat shields around the exhaust pipe, I would
start by checking those. Just give them a tap & see if you get rewarded with
a rattle. Other possibilities are worn accessory belts & bearings in belt
tensioners/ idler pulleys. These tend to show up predictably at certain
engine revs though.
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