Help with failed emissions

[crawler dude12]

Took my 1988 Toyota 4runner in to get it inspected and it failed the idle test... Where and what should I look for?

Here is a pic of the results

 

[TurboMinivan]

If the vehicle has failed as a result of high CO and HC, the CO failure should be diagnosed first. Here is some general but hopefully helpful information:

http://www.auto-repair-help.com/auto_diagnostics/diagnose_emission_test_failure.php

 

[SLC97SR5]

Check the obvious stuff like general tune up, i.e. air filter, change the oil, spark plug and wire condition.

Once all that checks out, verify the correct timing and pcv operation.

Was the engine nice and hot when you took it in?

 

[crawler dude12]

Cool. I will give it a tune up. And I tried to heat the engine the best I could with what little gas I had. (Couldn't fill up either)

 

[Offrodeo]

How old is the cat?
I highly suggest Emissions Now right off state street in Murray. Don is an honest mechanic that will always give advice on how how to get passed.

 

[crawler dude12]

I honestly don't know how old the cat is... I just bought this truck this month... It passed emissions before I bought it. And Murray is a little far for me right now.

 

[Toad]

Check tune up stuff first. What rpm was you idle test performed at? I dont know how there machines work. Here in Cache Valley the idle test can be performed up to 1200 rpm. So if you can bump the idle to 1100 you might be able to get it to pass by doing that. I do it all the time

 

[rockdog]

Change the oil right before you go. You'd be surprised how much difference it can make. Do the tune stuff as well and the higher rpm will help a lot too.

 

[cjncustoms]

And put some denatured alcohol in your gas. Always worked for me back in the day.

 

[chans]

With as high as both are probably cat converter and/or O2 sensor. Tune up only works for high HC with 100 over and below on these engines it seems. Struggled to get mine to pass for years with doing plugs and tune ups until last year when the HC went into the mid 300 range and finally had to buy a new cat and O2 sensor and the change was drastic.

 

[crawler dude12]

I hope it's not the cat....

 

[chans]

I hope it's not the cat....

Cat was actually pretty cheap. The O2 on the other hand

 

[crawler dude12]

Looked at some and looks like it's $45 for a good one, and a good cat is close to $100... Am I wrong?

 

[chans]

Maybe different since my engine is newer (94). Cat was 86.99 and 02 was 139.00 but looks like they came down this year.

 

[crawler dude12]

Is yours the 3.0?

 

[airmanwilliams]

Lowrange should have a cat cheaper than that for you that should work I think.

 

[crawler dude12]

The only cat I saw on there was for a samurai. Would that work? And would this tune up kit be any good? http://www.new-part.com/product/toy...Av8zZsFA_8yNer3zom7YRfCzdYWcku6U24V3pUdfD_BwE

 

[chans]

Is yours the 3.0?

2.4

 

[crawler dude12]

Mine is the 3.0

 

[crawler dude12]

I have tried and tried and tried and even though I have done a full tuneup it still failed... Any more ideas on how to get me to pass? I'm about ready to give up on it.