Question about 1994 Toyota Tercel

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How do i fix obd1 code 25 "air fuel mixture lean"? 94 Toyota Tercel

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6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

  • 231 Answers

SOURCE: obd1 trouble code

25) is mixture control continuously lean
42) is VSS circuit - vehicle speed sensor
43) is starter signal circuit
Good luck and I hope this answers your question. And remember to rate all the solutions that you get, thanx.

Posted on Oct 31, 2008

alicantecoli
  • 22095 Answers

SOURCE: refrigerant in 1994 Toyota Tercel

look for the filler plugs and r12 has a thread and 134 has a bulge in the middle,94 was the change over from R12 to R134 ,also look at the rad as R12 is a small rad and R134 has a full size rad .Also look under bonnet for a sticker giving charge amount and type of gas

Posted on Apr 02, 2009

  • 340 Answers

SOURCE: fuel mixture is too lean

many of the late model cars & trucks can't be
adjusted some of the carbs are preset some you can force and some don't have an adjusting screw for the jets if the carb is in good working order but needs a bit more fuel you u must adjust the float for more or less fuel check to make sure the float valve is clean free and not sticking ..

Posted on Mar 03, 2010

  • 6982 Answers

SOURCE: fans dont work and overheats 94 toyota tercel

Most systems work pretty much the same. First check the fans themselves by hot wiring them to the battery. If they work, you need to check the engine temp sensor (some vehicles use one for gauge and fans, others use a separate one for fans) relay, and of course any fuses.
You will help yourself a lot by getting either a chilton or haynes manual to show you how to do testing.

Posted on Jun 20, 2010

  • 1949 Answers

SOURCE: 1995 Toyota 4Runner. 4WD

replace fuel filter/has water

Posted on Feb 04, 2011

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2 Answers

I need the list of codes for a 1994 corolla


1.6 GLi COROLLA

DTC NUMBER TROUBLE AREA 12 clip_image001.gifRPM signal 13 clip_image002.gifclip_image002.gifRPM signal 14 IGN signal 16 ECT Signal 21 Oxygen sensor signal 22 Water temperature signal 24 Intake air temperature sensor 25 Air / Fuel ratio lean 31 Vacuum sensor signal 41 Throttle sensor 42 Vehicle speed sensor 43 Starter signal 52 Knock sensor 51 Switch COND

Sep 29, 2014 | 1994 Toyota Corolla

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Toyota Corolla Code P0171 Check Engine light


Code P0171 on Toyota Corolla Q: What could cause the code P0171 on 2002 Toyota Corolla? A: The code P0171 reads "System Too Lean (Bank 1)". This means that the air-fuel mixture coming in to the engine is too lean, or there is too much air and too little fuel. This could be caused by a number of reasons, such as bad airflow sensor, vacuum leaks, low fuel pressure, clogged fuel injectors, etc. To know exactly what caused the problem, your mechanic can do a few tests.
From my experience, the airflow sensor problems are fairly common; sometimes the sensor just gets dirty and gives false air flow readings causing lean condition. Again, your mechanic can test it.
If the airflow sensor is causing the lean condition, it will need to be replaced. If the sensor is just dirty, your mechanic may suggest to clean it (cleaning the airflow sensor is very delicate procedure) as a temporary solution - sometimes this could work.

on Dec 07, 2009 | Toyota Corolla Cars & Trucks

2 Answers

Check engine light code 25


Engine Code 25, Air-Fuel Ratio Lean Malfunction.

it could be ther are many causes for this code and you must check for vacumm leaks.

Jun 19, 2014 | 1993 Lexus Es 300

3 Answers

1995 Toyota 4Runner. 4WD V6. Started running very sluggish with rough idle. Check Engine light came on and I checked on board diagnostiics. Read Code 25 Air/Fuel Mixture Lean and Code 26 Air/Fuel...


Sounds like the Oxygen Sensor could be faulty, or the fuel delivery system is going haywire for some reason (leaky or plugged injector on some cylinders).

The fuel delivery is controlled by the Oxygen sensor, though.

Good luck on this repair.

Feb 04, 2011 | 1995 Toyota 4Runner

1 Answer

What regulates fuel air mixture. my fuel rail


the oxygen sensors trim and richen the fuel air mixture and they will not always set a code in obd1 vehicles. could be a stopped up cat though if the exaust smells like rotten eggs

May 10, 2010 | 1988 Ford F 250

1 Answer

2006 Toyota Corolla Code P0171 What could be the problem?


po171 means the air fuel ratio is lean (not enough fuel) so you must check for anything that can do that a good example would be a vacuum leak that allows non metered air to enter the engine (more air same amount of fuel = lean mixture) or a clogged injector (same amount of air less fuel = lean mixture as well)

Jan 06, 2010 | 2003 Toyota Corolla

1 Answer

How to adjust fuel mixture 2 barrel carburater for


In the late 70's they mandated that the adjustment screws be capped over. If they haven't been exposed, there will be two plugs covering them on the baseplate. Air adjustment screws are always somewhere on the base of all carbs with the only exception being on Holley 4bbl carbs used on performance engines (definitely not yours)

Nov 18, 2009 | 1983 Toyota Corolla Tercel

1 Answer

I bought a '94 4runner from a dealer acouple


He's right I had a 94 replaced the o2 senser

Apr 05, 2009 | 1994 Toyota 4Runner

2 Answers

Check Engine Light: Code 25 Lean Fuel/Air Mixture


if there is a miss when accelerating i would lean more to the injectors. but if you get the number to your toyota region office ask for an fts, or field tech, tell them what all is happening and that the dealer keeps jerking you around they will probably arrange for someone to look at it for at no charge. i work for a toyota dealer and they are really big on service like that.

Mar 15, 2009 | 1994 Toyota Xtracab

1 Answer

Obd1 trouble code


25) is mixture control continuously lean
42) is VSS circuit - vehicle speed sensor
43) is starter signal circuit
Good luck and I hope this answers your question. And remember to rate all the solutions that you get, thanx.

Oct 30, 2008 | 1995 Toyota Camry

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