My toyota 4k engine consumes too much gas, is there a way to adjust the carburetor to minimize consumption without reducing acceleration?

No sensors affect acceleration specifically but all of the sensors provide information about engine conditions, load, speed, temperatures and so forth for the ECU to make the correct adjustments to the spark and fuelling.

One or more sensors can become tired and deliver inaccurate information without triggering a fault code. This might have a minimal effect on normal driving and a more marked effect on acceleration. It needs someone with experience and some decent diagnostic equipment to study the live data and recognise the suspect sensors.

The above stage should be the last stage of a process. The first stage would be to carry out a thorough visual check and to ensure the routine maintenance is up to date. On some engines a valve timing check should be carried out as part of the preparation.

The next stage is to carry out a fuel pressure and delivery test. Insufficient fuel delivered at the wrong pressure and a couple of dribbling injectors would reduce acceleration whatever sensors are replaced.
If no faults are found and the performance is still down, the next stage is to remove the injectors for specialist inspection/overhaul/replacement...

Yes you can adjust the carburetor dash pot.

http://www.fueleconomy.gov/feg/bymake/Toyota1988.shtml

The '88 Cressida should get about 15 to 20 mpg (about 13-14 L/100KM).

Make certain that the air cleaner is clean. The spark plugs must be clean and properly gapped.

Have the engine checked by a mechanic.

Don't let the car idle excessively.

When driving (especially accelerating), imagine that there is a raw egg (in the shell) between your foot and the accelerator pedal and try not to crush the imaginary egg.

Avoid speeding. Most cars' peak fuel efficiency is between 35 m.p.h. and 55 m.p.h. (55 kph to 90 kph)

Good luck from Detroit, MI, USA.

only use the first third of the gas peddle
use premium grade fuel(computer controlled engine will adjust for better fuel quality)
TURN OFF THE A/C uses about 25% of your fuel.
sorry to say this, but next time buy a smaller engine/body car (in england, if it dont do more than 45 mpg,as an average,the residual value is pants...)

this car is fitted with a computer controlled engine/gearbox it will try to make you drive as economically as poss, if you let it,Try this,without using the gas padal let the car accelerate all the way to top gear on its own then from stop use 1/3rd of gas pedal upto top gear, try not to assist acceleration let it do its own thing.if you can drive like this all the time gas mileage will be considerably higher.it is made this way because makers have been told to reduce power/gas consumption in all cars....of course you can use kickdown but watch your fuel guage....

I see you have a four cylinder since it only holds 4.5 quarts.
2006 manual confirms your oil consumption is within allowances. Just check oil every time you buy gas like the manual reccomends. Do not over rev engine or accelerate from stops at max capacity of car as these can increase oil consumption.

JR

put the original jet back in and leave well alone,any weaking of the mixture will burn the valves out and possibly burn a hole through the piston crown .Want better fuel consumption then buy a citreon diesel

You can over-inflate your tires by about 8%, use a K&N air filter, drive 15 kph slower on the highway, accelerate slowly and never accelerate uphill, draft behind larger vehicles, regular maintenance (oil changes, spark plugs, wires, filters), use a fuel system cleaner every oil change. These can increase your fuel economy drastically, but if you are still noticing poor fuel economy you should have the car checked by a mechanic for what might be causing the high fuel consumption.

i hope this helps
matthew