Is 21 miles per gallon normal for a 90 Camry 4 cylander?

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Old 17 Nov 2004, 07:37 pm   #1 (permalink)
josh@dodgeit.com
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Default Is 21 miles per gallon normal for a 90 Camry 4 cylander?

I just bought a '90 Camry with 137,000 miles on it and checked the gas
mileage and it's only 21 mpg highway. I'm curious if that's normal for
a car this age or do I have some sort of gas leak. I had a guy check it
a couple of weeks ago but he couldn't find one. Anyone have any other
ideas on what could cause such bad mileage? I've read that most people
still get upwards of 35mpg on their '90 Camrys.

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Old 17 Nov 2004, 08:26 pm   #2 (permalink)
Curtis Newton
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Default Re: Is 21 miles per gallon normal for a 90 Camry 4 cylander?

On 17 Nov 2004 17:37:18 -0800, josh@dodgeit.com wrote:

>I just bought a '90 Camry with 137,000 miles on it and checked the gas
>mileage and it's only 21 mpg highway. I'm curious if that's normal for
>a car this age or do I have some sort of gas leak. I had a guy check it
>a couple of weeks ago but he couldn't find one. Anyone have any other
>ideas on what could cause such bad mileage? I've read that most people
>still get upwards of 35mpg on their '90 Camrys.



All highway and only 21 mpg?? Or a mixture with 21 mpg overall? If
all highway, that is low for a 4 cylinder.

When was the last time the vehicle had a service interval (i.e. spark
plugs, air filter, etc).

You might also run a bottle of Chevron Fuel Injection cleaner through
the system and see if that helps.
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Old 17 Nov 2004, 09:02 pm   #3 (permalink)
m Ransley
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Default Re: Is 21 miles per gallon normal for a 90 Camry 4 cylander?

No not normal mine gets 28-36. you need work,
Check tiimng, O2 sensor, sticking brakes, Tune it up ,plugs wires ,
air filter etc, Change engine, trans, and differential fluid use Mobil
synthetics . I did all this at once earlier this year and went up 9
mpg. Retarded timing can nock you down 3 mpg easily.

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Old 17 Nov 2004, 09:04 pm   #4 (permalink)
m Ransley
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Default Re: Is 21 miles per gallon normal for a 90 Camry 4 cylander?

Doing a compression test will help determine engine condition.

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Old 17 Nov 2004, 09:16 pm   #5 (permalink)
josh@dodgeit.com
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Default Re: Is 21 miles per gallon normal for a 90 Camry 4 cylander?

It was about 95% highway. I just had the fuel injection cleaned,
thought that would make a difference. I had the spark plugs and air
filter checked as well.

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Old 17 Nov 2004, 09:22 pm   #6 (permalink)
josh@dodgeit.com
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Default Re: Is 21 miles per gallon normal for a 90 Camry 4 cylander?

The car drives extremely smooth. Wouldn't I notice if the timing was
off? One thing I do notice is that is has a somewhat slow acceleration,
like I have something heavy in the trunk. What can that mean?

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Old 17 Nov 2004, 10:19 pm   #7 (permalink)
m Ransley
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Default Re: Is 21 miles per gallon normal for a 90 Camry 4 cylander?

Drives slow ? replace plugs and filter and check it out and tune it up,
you have alot of areas to start on. Its a combination of neglect,
retarded timing you will not notice, just less power, but it is more
than that or it would not be so low

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Old 18 Nov 2004, 05:28 am   #8 (permalink)
JP
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Default Re: Is 21 miles per gallon normal for a 90 Camry 4 cylander?

I had a similar problem with my 93 2.2L until I found out the gas tank was
leaking. It took a while to diagnose because there was no gas on the ground.
The dirt was acting as a sponge. After I had the tank and the filler neck
redone, fuel consomption got normal.
Have yours checked.

JP

josh@dodgeit.com wrote:
> I just bought a '90 Camry with 137,000 miles on it and checked the gas
> mileage and it's only 21 mpg highway. I'm curious if that's normal for
> a car this age or do I have some sort of gas leak. I had a guy check
> it a couple of weeks ago but he couldn't find one. Anyone have any
> other ideas on what could cause such bad mileage? I've read that most
> people still get upwards of 35mpg on their '90 Camrys.



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Old 18 Nov 2004, 06:46 am   #9 (permalink)
ROBMURR
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Default Re: Is 21 miles per gallon normal for a 90 Camry 4 cylander?

How about a new fuel filter too while your
doing stuff. How did you have the injectors
cleaned? A bottle of stuff in the tank?
I agree a compression test is needed on
a motor that old. Could be valves are worn
or at least need adjusting.
How about a plugged up Cat Converter?
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Old 18 Nov 2004, 11:54 am   #10 (permalink)
Jason James
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Default Re: Is 21 miles per gallon normal for a 90 Camry 4 cylander?


<josh@dodgeit.com> wrote in message
news:1100748132.802254.232430@f14g2000cwb.googlegr oups.com...
> The car drives extremely smooth. Wouldn't I notice if the timing was
> off? One thing I do notice is that is has a somewhat slow acceleration,
> like I have something heavy in the trunk. What can that mean?



It means your car has lost performance. If the engine is smooth, then
nasties like one cylinder down on compression is unlikely. Retarded or lack
of advance in the ignition will not show up as a rough engine ime unless it
is grossly out. You do get a lower idle speed,..but the ECU maybe
compensating for that by advancing idle-speed control. This last bit is a
guess on my part.

Check the aircleaner is clean.

If the injectors or fuel system were out to lunch,..you'd expect
hard-starting and a less than smooth operation.

Ignition base timing and/or incorrect advance under dynamic load -problems
can produce the symptoms you have. A timing light check is enough to at
least see if the basics are happening here. Hookup an inductive coupled
TLight (they have a slide operated coupler which is hooked around No 1
ignition lead. You then push a link into Te1 and E1 of the
diagnostic-socket. The base idle speed increases for 5 secs than settles
down to 10 degrees adv. Once the link is removed the advance should be
between 13 and 22 degrees.

If the above is OK,...consider if the exhaust is restriction-free. Loose
baffles can come adrift and cause restriction,..tho some accompaning noise
should also be present.


Jason






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