97 Camry MPG

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Old 04 Mar 2005, 07:42 pm   #1 (permalink)
badgolferman
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Default 97 Camry MPG

My 97 Camry 4 cyl gets about 24 MPG all around driving. How does this
compare to others? It seems less than the 94 I used to have. It has
103K and I just changed the spark plugs and air filter to see if that
would make a difference. I can't say I notice much change. I'm not a
lead foot or have jackrabbit starts either. No, I have not had it to
the dealer for a tuneup; what else can I do myself?

My wife has been driving this car for a couple of years and she is much
heavier on the accelerator than I am. Is it true about cars "learning"
driving habits and adapting to their drivers? That seems silly to me
but some of my co-workers swear it's true.

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Old 05 Mar 2005, 06:34 am   #2 (permalink)
m Ransley
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Default Re: 97 Camry MPG

How old is your timing belt , a stretched belt retards timing , reducing
milage and power, Timing is a good place to start.

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Old 05 Mar 2005, 08:54 am   #3 (permalink)
badgolferman
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Default Re: 97 Camry MPG

m Ransley wrote:

> How old is your timing belt , a stretched belt retards timing ,
> reducing milage and power, Timing is a good place to start.


Timing belt was replaced at 62K. Power seems to be adequate and the
engine runs smooth. I do seem to think I smell a bit of exhaust when
sitting still but not when driving.

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Old 05 Mar 2005, 11:10 am   #4 (permalink)
Jason James
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Default Re: 97 Camry MPG


"badgolferman" <REMOVETHISbadgolferman@gmail.com> wrote in message
news:xn0dzd2l7frnoct000@news.individual.net...
> My 97 Camry 4 cyl gets about 24 MPG all around driving. How does this
> compare to others? It seems less than the 94 I used to have. It has
> 103K and I just changed the spark plugs and air filter to see if that
> would make a difference. I can't say I notice much change. I'm not a
> lead foot or have jackrabbit starts either. No, I have not had it to
> the dealer for a tuneup; what else can I do myself?
>
> My wife has been driving this car for a couple of years and she is much
> heavier on the accelerator than I am. Is it true about cars "learning"
> driving habits and adapting to their drivers? That seems silly to me
> but some of my co-workers swear it's true.


opinion only:

There are differing types of 'intelligent transmissions'. The more modern
ones have variable gear- ratios (must work on some sort of DAF belt-drive
(been around for eons) with infinately variable pulleys?),..the lessor types
tending to remember your throttle settings and so adjusting the trans-shift
points (similar to the 'power/economy' button on trans-shifters}. Ultimately
tho, this shouldn't have a dramatic effect on economy.

If your driving is 3/4 urban-city street, then 24 mpg is reasonable imho. If
it were the reverse, ie mostly hiway,..then its way to low.



Jason


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Old 05 Mar 2005, 12:21 pm   #5 (permalink)
m Ransley
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Default Re: 97 Camry MPG

Some areas winter gas formulations give less milage.
I notice a big difference when I switch motor, trans, and differential
to Mobil synthetic.

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Old 05 Mar 2005, 01:14 pm   #6 (permalink)
Philip
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Default Re: 97 Camry MPG

Jason James wrote:
> "badgolferman" <REMOVETHISbadgolferman@gmail.com> wrote in message
> news:xn0dzd2l7frnoct000@news.individual.net...
>> My 97 Camry 4 cyl gets about 24 MPG all around driving. How does
>> this compare to others? It seems less than the 94 I used to have.
>> It has 103K and I just changed the spark plugs and air filter to see
>> if that would make a difference. I can't say I notice much change.
>> I'm not a lead foot or have jackrabbit starts either. No, I have
>> not had it to
>> the dealer for a tuneup; what else can I do myself?
>>
>> My wife has been driving this car for a couple of years and she is
>> much heavier on the accelerator than I am. Is it true about cars
>> "learning" driving habits and adapting to their drivers? That seems
>> silly to me
>> but some of my co-workers swear it's true.

>
> opinion only:
>
> There are differing types of 'intelligent transmissions'. The more
> modern ones have variable gear- ratios (must work on some sort of DAF
> belt-drive (been around for eons) with infinately variable
> pulleys?),..the lessor types tending to remember your throttle
> settings and so adjusting the trans-shift points (similar to the
> 'power/economy' button on trans-shifters}. Ultimately tho, this
> shouldn't have a dramatic effect on economy.
>
> If your driving is 3/4 urban-city street, then 24 mpg is reasonable
> imho. If it were the reverse, ie mostly hiway,..then its way to low.
>
> Jason


Jason ... With only a couple of recent exceptions, "intelligent" automatic
transmissions still use planetary gearsets and as such, are not CVT
automatics.
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Old 06 Mar 2005, 04:28 am   #7 (permalink)
SmokingTiresV6
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Default Re: 97 Camry MPG


Gas has a big effect. Don't use any Blue Planet gas. The high ethanol
content causes power los. It burns, but no real heat is created by it.
Don't get gas from Holiday, or Super America. Their gas is watered
down (they get the post line flushing gas from the refinery). Fleat
farm are good. BP is good.

Keep the RPM's low. I found I can get 27mpg in my '92 V6 (with 207k)
if I keep the RPM's under 2,500. 2,500RPM is still high enough to get
up to 60mph.


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Old 07 Mar 2005, 06:58 am   #8 (permalink)
badgolferman
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Default Re: 97 Camry MPG

m Ransley wrote:

> Some areas winter gas formulations give less milage.
> I notice a big difference when I switch motor, trans, and
> differential to Mobil synthetic.


You may be right about the winter gas. It seems I am not the only one
noticing this. Some of my friends say the same thing.

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seriously.
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Old 07 Mar 2005, 07:32 am   #9 (permalink)
m Ransley
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Default Re: 97 Camry MPG

Also cold winter weather lowers my milage apx 4 mpg.
But checking timing is a quick 5 min job that will give major
improvements if it is off by 2-3 degrees, it increased my milage by 4
mpg on a new belt the mechanic forgot to check

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Old 07 Mar 2005, 10:56 pm   #10 (permalink)
SmokingTiresV6
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Default Re: 97 Camry MPG


m Ransley Wrote:
> Also cold winter weather lowers my milage apx 4 mpg.
> But checking timing is a quick 5 min job that will give major
> improvements if it is off by 2-3 degrees, it increased my milage by 4
> mpg on a new belt the mechanic forgot to check



^
This is an extremely band statement and should not be taken as fact.


4mpg has tons of variables. And that number is per vehicle. It also
depends on the ECU. The ECU in a Subaru is corrective. When the O2
sensor in the exhaust manifold senses the cold, it causes it to run
rich the the assumption that it is still warming up. However older
Camrys do not have a corrective ECU. So they do not run rich past warm
up (which is based on the engine temp sensor). Newer ones may have it,
I am not 100% sure. However depending on the temp outside is how long
the O2 sensor assumes that it is cold. There are way too many
variables to assume 4mpg.


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