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Old 11-14-2019, 06:03 PM #16
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Here is what I use for acetone. I have a qt can I suck it out of. .


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Old 11-14-2019, 06:42 PM #17
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Quote:
Originally Posted by trackntrail View Post
Did you smog your truck with cataclean in the tank? Or run the tank of cataclean through and then smog it on fresh gas?
Run it through the tank completely then refill with gas & smog.
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Old 11-15-2019, 02:01 AM #18
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I thought there was a year that it had egr but I might be thinking of another vehicle with a 5vz. I owned a vehicle that threw the mil for the catalytic converter below threshold when I used anything but shell 91 octane fuel, I believe the additives in helped clean the converter and keep it above its limit.
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Old 11-15-2019, 03:00 AM #19
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Failed smog test

Quote:
Originally Posted by T.Tech View Post
I thought there was a year that it had egr but I might be thinking of another vehicle with a 5vz. I owned a vehicle that threw the mil for the catalytic converter below threshold when I used anything but shell 91 octane fuel, I believe the additives in helped clean the converter and keep it above its limit.

I'm fairly certain no 4Runner 3.4's have EGR. Some year CA Tacoma 3.4's do I believe. Something about an SUV being a passenger car vs a truck and having different standards. I read it somewhere.

Here's where I saw it
https://people.well.com/user/mosk/im...ma_ECUs_v2.pdf

Someone compiled a list and it says 2wd Tacomas have EGR. 4wd don't apparently. At any rate, if OP doesn't have it, it makes no difference.
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Old 11-17-2019, 03:42 AM #20
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Quote:
Originally Posted by 4Reak Show View Post
I'm fairly certain no 4Runner 3.4's have EGR. Some year CA Tacoma 3.4's do I believe. Something about an SUV being a passenger car vs a truck and having different standards. I read it somewhere.

Here's where I saw it
https://people.well.com/user/mosk/im...ma_ECUs_v2.pdf

Someone compiled a list and it says 2wd Tacomas have EGR. 4wd don't apparently. At any rate, if OP doesn't have it, it makes no difference.
No OBDII 5VZ-FEs have the EGR. Since no 4Runners before 1996 had the 5VZ-FE, no 4Runners with that engine had the EGR as all are OBDII. Pre-1996 T-100s with the 5VZ-FEs have it, for example. Those little elbows with the caps on the top of the throttle body connect to the EGR when they are present.
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Old 11-17-2019, 12:10 PM #21
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Just passed smog, barely though. Read at 478 with the highest value allowed being 508. This was at the 15mph reading. Honestly they always tell me to change my cat when it gets this close. I agree with others here. Change oil, clean MAF and EGR. Run that thing long and hard to heat up well and you should pass. I normally hit a smog spot in the Oakland where I live after driving home from a day trip in Tahoe. This week was the first time I hadn't slogged after a long drive ( 40 minutes of running around doing domestic errands). I suspect if I did an hour or so of freeway speeds it would pass easy.
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Old 12-14-2019, 09:40 PM #22
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So I finally passed.

Here is what I did

Seafoam The intake
Seafoam through gas tank
Drove 300 miles
Tested and failed - numbers actually got worse

Replaced Cat
Numbers immensely improved across the board - still failed due to high nox only

Replaced front o2 sensor
Passed with good numbers

So...in the end it required a seafoam treatment, cat and o2 sensor


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