Question about 1993 Toyota Pickup

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I have a 93 Toyota pickup 22re engine that has poor gas mileage. I replaced the O2 sensor, the TPS sensor and the distributor cap plus I ran injector cleaner through it and cleaned the throttle body. What else could be causing my poor gas mileage? Is there adjustments I can make on the engine somewhere that would help it get better mileage?

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When was last healthy tune up? Plugs, wires, ALL fluids & filters? I'd start there, then check tire pressures to make sure they're up.

Posted on Mar 14, 2011

Testimonial: "My tire pressures were extremely low, like 10 psi. Like driving through sand everywhere i went. Thanks for the helpful feedback."

  • biking_10532 Mar 26, 2011

    fuel filter could be the case you should replace it every 60,000 miles or every two years. i found a web site that solid this part you 5 buck plus s&h witch was live 13 buck all and all.

  • michaelst675 Sep 05, 2014

    After bad O2 sensor, clogged injectors are 2nd most likely cause of alternating lean/rich codes. Best chemical for cleaning them is polyether amine (PEA), which was invented by Chevron. About the only product that still contains a lot of PEA is Red Line's SI-1 Complete Fuel System Cleaner - even Chevron no longer lists PEA in their own Techron MSDS. I'd add a bottle of the Red Line SI-1 to 2/3 to 3/4 tank gas and run until 1/8 tank, then add a second bottle and fill tank again to 2/3 to 3/4 full, and run down to 1/8 again. An alternative is to have a shop feed concentrated cleaner directly into the fuel rail - that will work even better than the Red Line cleaner.

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Odd O2 sensor readings and poor gas mileage


You don't have any time information in your question... that is important and you really need to add that.
Newer emission controls systems, unlike older ones, need to be driven for a while (called the Drive Cycle), sometimes as long as three days-worth of start-stop trips, to reset all the system readings. Yours is one of those. For a good discussion of the system, see Post #5 and later at http://forums.trailvoy.com/showthread.php?t=62408
and see how complex it can be.

If you have disconnected the battery, the system goes into a "limp mode" (like someone with a hurt leg) or failsafe mode until about the same length of time, and will show poor mileage, poor performance, and no readings can be depended on until the system re-stabilizes.
Compression and fuel pressure sounds absolutely normal.
A loose gas cap can't cause an O2 sensor to fail, but it can cause a false reading because it causes an emissions system error.
Once a new cap is on, it can take days for the system to return to normal.
You did not mention the normal stuff, like a new air cleaner. That stuff is more likely to cause rich running and poor mileage.

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1994 camry very poor gas mileage


Get a tune up . wires plugs cap rotor , Clean MAF , replace TPS . etc.

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How many oxygen sensor toyota 1992 22re engine has?


Trucks sold in California have one sensor in front of the catalytic converter and one after the cat.
Everybody else has just the sensor in front of the cat.

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93' toyota pickup 4wd 4 cylinders 22re, sputters when given throttle


Low fuel pressure can cause this or a clogged filter, has the fuel pressure been checked? Has the fuel filter ever been changed?

Feb 13, 2013 | 1994 Toyota Pickup

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What are the symptoms of a bad throttle position sensor in a 1994 toyota pickup with a 22re engine?


Troubleshooting and repair here:
http://www.4crawler.com/4x4/CheapTricks/TPS/index.shtml

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My 89 Toyota pickup idles too fast in cold weather


I would have a look at your coolant sensor, if it's reading the wrong temperature, it will cause a idle problem. If you can, get a scanner on it to verify it's operation.

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1 Answer

Install 02 sensor,92 pick up 22re,automatic,4cyc.


you will need an o2 sensor tool you can get one at eney auto part store. first disconect the 3 or 4 prog wire form the o2 sensor place tool and remove some toyota trucks have them on the exost manifolds some of them on the exost pip just be for the catolitek converter.

May 18, 2009 | 1992 Toyota Pickup

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Having a problem with my 93 camry v6. car shakes when it is idle, when i accelerate car makes a clunking noise and doesnt accelerate as fast as it used to. also check engine light is on. could it be dirty...


Most likely you need motor mounts for the shaking and clunking.
The check engine light being on could cause the accelerating problem. It could be something as simple as the fuel filter being old and plugged up. Have you ever changed the fuel filter? This could cause the engine to run lean making the check engine light come on. And when accelerating the engine will be "starving" for fuel causing poor acceleration.

Apr 23, 2009 | 1993 Toyota Camry V6

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88 toyota has little power when gas is pressed


your engine seems to be running rich. that may be do to a bad spark plug, spark plug wire, bad distributor cap. If you have a 22re you should check for trouble codes by jumping TE1 and E1.
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You should also check your engine timing. With a timing light. The timing marks are located on or above the oil pump. keep in mind in order to get timing right you must have TE1 and E1 jumped. Set to 5 degrees advanced. If your engine is improperly timed it will accelerate slowly, and get worse mileage.

Also adjust/Check engine valves appropriately. they will cause low power.

Also does it misfire at idle?

Oct 22, 2008 | 1988 Toyota Pickup

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