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Today's topics:
* Engine Temperature Problem? 1999 Sentra 2.0 - 4 messages, 3 authors
http://groups.google.com/group/alt.autos.nissan/t/54a063b2d0a4fdd0?hl=en
* Strange new noise - 3 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 4 ==
Date: Mon, Jul 5 2010 6:10 pm
From: "DanielleOM"
DanielleOM 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
After 2 coolant flushes and a new thermostat, I am still having a problem.
With termperatures close to 100 degrees F today, I had to drive with AC off
and heater on to keep engine at normal termperature when driving at 65 mph.
I am inclined to think that the design of the radiator in Sentra SE with
SR20DE engine is barely enough to do the job and any deterioration leaves it
inadequate.
== 2 of 4 ==
Date: Tues, Jul 6 2010 2:00 pm
From: John Henderson
DanielleOM wrote:
> After 2 coolant flushes and a new thermostat, I am still having a problem
> With termperatures close to 100 degrees F today, I had to drive with AC off
> and heater on to keep engine at normal termperature when driving at 65 mph.
> I am inclined to think that the design of the radiator in Sentra SE with
> SR20DE engine is barely enough to do the job and any deterioration leaves it
> inadequate.
I'm sure radiator design capacity isn't your problem.
Did you bleed the air from the coolant passages in the engine
block using the air release plug?
Is the water pump actually pumping adequately?
John
== 3 of 4 ==
Date: Tues, Jul 6 2010 2:17 pm
From: Peter Hill
On 6 Jul 2010 21:00:37 GMT, John Henderson <jhenRemoveThis@talk21.com>
wrote:
>DanielleOM wrote:
>
>> After 2 coolant flushes and a new thermostat, I am still having a problem.
>> With termperatures close to 100 degrees F today, I had to drive with AC off
>> and heater on to keep engine at normal termperature when driving at 65 mph.
>> I am inclined to think that the design of the radiator in Sentra SE with
>> SR20DE engine is barely enough to do the job and any deterioration leaves it
>> inadequate.
>
>I'm sure radiator design capacity isn't your problem.
>
>Did you bleed the air from the coolant passages in the engine
>block using the air release plug?
>
>Is the water pump actually pumping adequately?
>
>John
Reduction in temperature from switching the heater to max heat and the
heater fan on indicates that the radiator is the problem.
Possible collapsed hose to/from rad.
Or the coolant hasn't been changed or it's been run on water and the
rad is now full of corrosion. Easy test is get engine warm, stop car,
stop engine then disconnect the fan. Then feel whole surface of rad,
it should be warm all over, any cold spots or a cold bottom tank show
it's not flowing water.
Once a Nissan overheats you need to replace the thermostat. It will
have taken a "set" and be stuck slightly open resulting in excessive
warm up time.
--
Peter Hill
Spamtrap reply domain as per NNTP-Posting-Host in header
Can of worms - what every fisherman wants.
Can of worms - what every PC owner gets!
== 4 of 4 ==
Date: Tues, Jul 6 2010 4:56 pm
From: "DanielleOM"
John Henderson wrote:
> DanielleOM wrote:
>
>> After 2 coolant flushes and a new thermostat, I am still having a
>> problem. With termperatures close to 100 degrees F today, I had to
>> drive with AC off and heater on to keep engine at normal
>> termperature when driving at 65 mph. I am inclined to think that the
>> design of the radiator in Sentra SE with SR20DE engine is barely
>> enough to do the job and any deterioration leaves it inadequate.
>
> I'm sure radiator design capacity isn't your problem.
>
> Did you bleed the air from the coolant passages in the engine
> block using the air release plug?
>
> Is the water pump actually pumping adequately?
>
> John
Other than change a headlight lamp, I have not done any maintenance work on
this myself. I live in an apartment building away from family with garages
Sears auto just flushed the radiator and they tell me they did it before
after changing the thermostat. It was overheating before I went in there
and it did it again after. I saw no real change.
Interesting question about the water pump. How can you tell if it's
working? I don't have gauge in my dashboard that measures engine coolant
flow. The car has 200,000 miles on it now and it has the original water
pump. I am not familiar with the water pump design. I have heard of
European cars where plastic parts were used in water pumps that gradually
deteriorate over time.
Starting to debate if I should repair or move on to another car. I still
like the way this one for the reasons that I bought it in the first place.
Danielle
==============================================================================
TOPIC: Strange new noise
http://groups.google.com/group/alt.autos.nissan/t/d6e4aec8892236ed?hl=en
==============================================================================
== 1 of 3 ==
Date: Tues, Jul 6 2010 7:14 am
From: Plague Boy
<text not snipped in hopes of more answers>
E. Meyer wrote:
> 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.
Yes, there's still one or two of the heat shields on the
exhaust, and yes, they rattle. But this noise is not a rattle.
I'd have to describe it as an "air" kind of noise. It sounds as
if the engine is sucking in air through some kind of
constriction, and it is ONLY noticeable when you are backing off
the gas so the car is compression braking AND mostly when there
is something to reflect the sound back at the passenger compartment.
--
PB
"I suspect you're an arrogant little pissant who grew up in the
Red Bull generation." - CJW
== 2 of 3 ==
Date: Tues, Jul 6 2010 2:42 pm
From: willshak
Plague Boy wrote the following:
> <text not snipped in hopes of more answers>
>
> E. Meyer wrote:
>> 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.
>
> Yes, there's still one or two of the heat shields on the exhaust,
> and yes, they rattle. But this noise is not a rattle. I'd have to
> describe it as an "air" kind of noise. It sounds as if the engine is
> sucking in air through some kind of constriction, and it is ONLY
> noticeable when you are backing off the gas so the car is compression
> braking AND mostly when there is something to reflect the sound back
> at the passenger compartment.
Have you ever had the timing belt changed? You're over 100,000 miles
past the averaged life span of 60,000-70,000 miles. Not that they all go
at those miles.
--
Bill
In Hamptonburgh, NY
In the original Orange County. Est. 1683
To email, remove the double zeroes after @
== 3 of 3 ==
Date: Tues, Jul 6 2010 9:30 pm
From: Plague Boy
willshak wrote:
> Plague Boy wrote the following:
>> <text not snipped in hopes of more answers>
>>
>> E. Meyer wrote:
>>> 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.
>>
>> Yes, there's still one or two of the heat shields on the exhaust,
>> and yes, they rattle. But this noise is not a rattle. I'd have to
>> describe it as an "air" kind of noise. It sounds as if the engine is
>> sucking in air through some kind of constriction, and it is ONLY
>> noticeable when you are backing off the gas so the car is compression
>> braking AND mostly when there is something to reflect the sound back
>> at the passenger compartment.
>
> Have you ever had the timing belt changed? You're over 100,000 miles
> past the averaged life span of 60,000-70,000 miles. Not that they all go
> at those miles.
I've owned the car 3 years, in which I've put about 3Kmi on it.
The person I bought it from didn't even change the oil, let alone
any other maintenance. I don't have the records, so I don't know
what might have been done prior.
I was under the impression that this engine uses a timing chain,
not a belt.
--
PB
"I suspect you're an arrogant little pissant who grew up in the
Red Bull generation." - CJW
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