Question about 1991 Toyota Previa

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My 1991 Toyota previa doesn't pass the smog check

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  • Toyota Master
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There are many reasons why the engine and the emission systems fails a smog check. If you go to this page it will give you ideas on how to pass the test next time around.

Posted on Feb 13, 2012

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6ya6ya
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Posted on Jan 02, 2017

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SOURCE: 1991 Toyota Previa

Please crank the engine again, and then remove all 4 spark plugs. Examine them & repost exactly what you see on the plugs.

Posted on Oct 07, 2008

yotaguy
  • 232 Answers

SOURCE: 1985 toyota pickup.22r,automatic trans,2 barrel

There ar two thermo vacuum switches on the intake manifold,one in the center top by the EGR pipe right next to the valve cover,and one center bottom on the outside right below the carburator,it may be that one of them is not fully opening/closing when the motor is cold.I'm not sure on this as I've never had this problem with my 22R's,hopefully this will point you in the right direction,if you want comment back and I'll research this further(it's 5 in the morn and I cant access my 22r manual)

Posted on May 01, 2009

sodeep
  • 3267 Answers

SOURCE: i have a 19991 toyota previa. the oil level light

Have u checked the oil's stickiness & color? It could be its telling you to change the engine oil.......sodeep

Posted on Jun 08, 2009

Garagetuner1
  • 1 Answer

SOURCE: 91 Toyota Previa AWD - Swap original engine for Previa Supercharged engine

I do a lot of work on Toyota Previa before; including rebuilt engine, swapping engine and transmission and lot of things in between, but never swap a normal aspirated engine to a supercharged engine or diesel. Since i have some experience in Previa, I would like to share my opinion with you regarding your plan to swapping the normal aspirated Previa engine to a Supercharged engine. When you do a swapp like that, you will not only be dealing with just swapping engine, but some wiring, computer, throttle body, air cleaner assembly, extra frame and pulley on the accessory items, transmission as well as a right rear end to get the correct gear ratio to accomodate the new engine and transmission. I can go on even more, but let me tell you this, beside less headache, it would definitely cheaper if you were to find a Supercharged Previa and fix it up. However, if you are totally motivated to do this project, keep in mind, this engine swap will be a long term and time consuming project.l I wish you best of luck and have fun!

Posted on Jan 17, 2010

  • 3 Answers

SOURCE: where is the fuse box located on a 1991 toyota

Directly above the radio at the top of the dash. Release lever at top of & center of heater controls will release cover. The cover is about 8 inchs square.

Posted on Feb 06, 2010

Testimonial: "When you buy a used car the first thing you look for is service areas. Knowing where they are located is not always easy on imports with out a manual"

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1991 toyota previa van won't start sometimes and cuts off by it self sometimes was told not the fuel pump but the computer.What kind of computer needs to be replace to fix that?


probably the main one. did you try the map sensor. my dad had one that he spent alot of money on and come to find out it was a $26 map sensor that plugs in on top of the motor.

Jan 20, 2013 | 1991 Toyota Previa

1 Answer

1991 toyota previa radio has no power


You missed something or you blew out a fuse.

Aug 29, 2012 | 1991 Toyota Previa

1 Answer

1991 Toyota Camry 4cyl idles at 1300 RPM... There is no idle adjustment screw. bad sensor of some sort? Can't pass my smog because the idle is too high. Runs okay otherwise.


look for a vacuum leak into the intake manifold (possible brake booster vac leak), check the idle air control valve for proper operation, check for EGR valve with bad diaphragm or stuck open.

Feb 19, 2011 | 1991 Toyota Camry

1 Answer

TOYOTA PREVIA 1991 2400 CC THE SIGN OF OPEN DOOR


The door afar sensors are located in the door latches. Try spraying all the door latches with wd40 penetrating oil and see if that helps.

Jan 09, 2011 | 1991 Toyota Previa

1 Answer

How to replace dash light bulb of 1991 Toyota Previa van


pop fuse cover, remove vent housing, remove speedo upper cover, remove 4 bolts holding speedo remove speedo, change bulb

Mar 31, 2010 | 1991 Toyota Previa

1 Answer

Have a problem with hesitation when giving it gas when going from a complete stop on 1991 toyota previa


thing to check: resricted air filter fuel filter,air filter, condition of spark plugs. check for carbon build up at air intake

Mar 21, 2010 | 1991 Toyota Previa

2 Answers

I have a 19991 toyota previa. the oil level light


If the light is flashing there could be problems with the electrical wiring. The easy places to check are at the bottom of the oil reservoir (pass. side under the hood) and at the driver side of the oil pan under the vehicle where the wires plug into the sensor. If this doesn't resolve the problem then it isn't easy, and testing the circuit will have to be done by someone who knows their electrical "stuff." Even the pump motor for the reservoir could be out.

If the Oil Level Sensor light stays on and you have already checked to make sure the oil level read on the dipstick under the driver side seat engine compartment is reading adequate, then you have a sticking oil level sensor float. Replacing the oil level sensor is easy, but extremely expensive ($485 in 2012). You can try to clean the plastic spool that the float slides on, but the problem is usually that it has swollen or expanded (likely from heat in the oil). One could try to sand it down but this would be difficult. I have made a new part out of nylon 6/6 on my lathe and replaced the plastic spool so far with excellent results. I'm considering selling it as an aftermarket part when I see if mine works. It would be a lot less than $485 dollars from Toyota. Or possibly have people send it to me and I'll repair the sensor myself.

Jun 08, 2009 | 1995 Toyota Previa

1 Answer

Car wont pass smog.


Is it running rough? Is the check engine light on?

May 27, 2009 | 1991 Toyota Camry

1 Answer

Prerunner wont pass smog due to engine service light


Try this:-
Theres a vaccum pipe tht fits on the brakes booster just under the mastercylinder probabely it may have popped out or the sensor could be faulty ....worth a try ;)

May 07, 2009 | 1991 Toyota Pickup

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