Question about 1991 Toyota Previa

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How to clean egr on toyota previa

I need to pass emissions control /Aircare on 91 Toyota Previa how do I clean EGR do i have to remove it? can i clean the lines and spray into the valve itself

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6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

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  • 3 Answers

SOURCE: 1992 Toyota Previa van,Oil dripping onto exhaust manifold, replace head gasket? need a free manual!

The toyota previa uses a formed silicone gasket for the valve cover and the cover is held in place by metric shoulder bolts ( 10mm). The valve gasket leaks because you can't get enough preload on the bolts to re-seat the old gasket when it gets old and shrinks. The shoulder bolts only allow you to tighten the gasket enough to seat the shoulder on the bolt. If you continue to torque down the suspected bolts, you will snap the bolt off ( don't ask me how I know this ). You can either 1.)replace the old gasket with a new one or 2.) remove the existing bolts around the leak area and put in new metric bolts that do not have a shoulder. You may want to put in a small sleeve into the existing bolt hole but shorter than the thickness of the valve cover to account for the smaller diameter bolt. You can now torque down the bolt and get enough preload to seal the valve cover without removing the old gasket. Make sure you use a torque wrench ( in-lbs) or be very careful not to snap these small valve cover bolts.

Posted on Jul 15, 2009

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SOURCE: where is the flasher on a 1994 toyota previa

The flasher is bolted to the firewall behind the right side of the instrument panel and you can't get to it from underneath the instrument panel. You will have to remove the center console fascia to get to the instrument cover screws and remove the instrument cover. Then you can get to the instrument holding screws and move the instrument panel out of the way. Either a service manual or AutoZone.com will have this information and pictures. Replace the flasher with a genuine Toyota flasher relay. The aftermarket relays might look like they fit but I have found out they don't work properly. The flasher is bolted to the firewall with a 13mm bolt. Take out the bolt and replace the flasher.

Posted on Jul 16, 2009

Mustgo
  • 2359 Answers

SOURCE: po401 and po420 (95 toyota previa Van super charged engine)

Check for air leak into system after MAF.

Check for

vacuum leaks on intake manifold,

the air tube between the air filter.

intake manifold vacuum hose.

===
clean throttle plate with Berryman carburator cleaner

SEE sample picture HERE
===


Check for loose or no connected vacuum hose(s).


Take it for a test drive.


Please rate my answer if it's useful to you.


Cheers,

Mustgo

Posted on Dec 19, 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

mickha2
  • 145 Answers

SOURCE: how to change front brake pads on toyota previa

open master cyl cap
remove tires
remove 2 bolts holding caliper
push piston in (GET THE C CLAMP)
change pads

Posted on Aug 17, 2010

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1 Answer

How to remove egr valve on a 1993 toyota previa


That previa has a central engine, so all engine work requires you take out driver and or front passenger seat out.

The EGR placement is here >> http://www.autozone.com/autozone/repairguides/Toyota-Previa-1991-1997-Repair-Information/EMISSION-CONTROLS/Exhaust-Gas-Recirculation-System/_/P-0900c1528008a1d5

near the bottom of the page.
Good luck

May 13, 2014 | 1993 Toyota Previa

1 Answer

EGR VALVE CLEANING


You clean the passages
You replace the EGR Valve

Aug 10, 2013 | 1992 Toyota Previa

1 Answer

My 1991 Toyota previa doesn't pass the smog check


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.

Feb 13, 2012 | 1991 Toyota Previa

1 Answer

How to replace EGR Valve and gasket in 1992 Previa dx


dont replace it, use seafoam to cleanse it

Jul 09, 2010 | 1992 Toyota Previa

1 Answer

How to remove cylinder head of Toyota Previa 91?


i need your email to send you whole write up

Jul 05, 2010 | 1993 Toyota Previa

1 Answer

Check engine light only comes on when I press the gas in my 1991 Toyota Preiva,changed the O2 sensors and it's still on


Do you know what trouble code the Previa is throwing?
You may want to check the little 1/2 inch diameter passage in the throttle body that connects to the EGR valve. If that passage gets clogged (and it usually does), It'll throw a check engine light. I was having a similar problem and found that this passage was completely blocked with carbon deposits. You can clean it out with a small screwdriver and a shopvac.

Oct 29, 2009 | 1993 Toyota Previa

1 Answer

My 1995 Previa check engine light goes on and off


My Previa was doing the exact same thing and it turned out to be a LOT of carbon deposits in the connecting passage between the throttle body and EGR valve. It just needed cleaning. That little passageway tends to get clogged on Previas a lot.

Feb 18, 2009 | 1995 Toyota Previa

1 Answer

1996 Toyota Previa code p0441


P0441 is Evap Emission Incorrect Purge Flow; the repair you are describing is easy, and should correct the P0441 restricition...I would anticipate no large problems.

Oct 07, 2008 | 1996 Toyota Previa

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