Author Topic: EGR issues. Need some help  (Read 39283 times)

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Yota4life

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Re: EGR issues. Need some help
« Reply #60 on: Jan 16, 2010, 10:28:35 PM »
haha good one. I bought a magnaflow cat for 1999 tacomas and put it on my 88 do you think that could be why my NOX reading was so high on smog?
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emsvitil

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Re: EGR issues. Need some help
« Reply #61 on: Jan 16, 2010, 10:35:05 PM »
No, I'd bet on the lack of backpressure...........
Ed
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Yota4life

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Re: EGR issues. Need some help
« Reply #62 on: Jan 17, 2010, 12:48:18 AM »
my CO% was almost ZERO so i must need a new o2 sensor and ill try plugging the exhaust some and go from there. but if the egr hasent been working the whole time that must be why i get horrible gas mileage. My 22re sucks gas like a big block
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emsvitil

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Ed
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86 SR5 XtraCab
22RE  W56B
31x10.50R15

Yota4life

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Re: EGR issues. Need some help
« Reply #64 on: Jan 17, 2010, 01:26:58 PM »
That explains a lot... Do you think the egr modulator can go bad? i checked mine and its clean.
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emsvitil

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Re: EGR issues. Need some help
« Reply #65 on: Jan 17, 2010, 03:16:13 PM »
That explains a lot... Do you think the egr modulator can go bad? i checked mine and its clean.

They can, but I doubt it.

Without backpressure on the bottom diaphragm, the EGR won't work.    You can test for leaks.....

Remove that hose, and plug in a fuel pressure gauge with a long hose so you can monitor the back pressure while driving.

You need to see at least 1/2 psi at the 25mph 2nd gear, steady speed for there to be EGR to lower the NOX.

With my 86,  it just fluttered a little until I added my 'special' back pressure gasket and it went to about 1 psi....  (this is how I aced the NOX last smog test)
Ed
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86 SR5 XtraCab
22RE  W56B
31x10.50R15

Yota4life

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Re: EGR issues. Need some help
« Reply #66 on: Jan 17, 2010, 04:21:10 PM »
I have a flange between my down pipe and cat. Im going to make a plate and try your back pressure trick for my next test. I should be good to go after that with a new o2 sensor and some denatured alcohol in the tank :) 
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Re: EGR issues. Need some help
« Reply #67 on: Jan 17, 2010, 07:14:51 PM »
Retard timing 2.5 degrees (you're allowed +- 3 from stock)
Ed
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86 SR5 XtraCab
22RE  W56B
31x10.50R15

Yota4life

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Re: EGR issues. Need some help
« Reply #68 on: Jan 17, 2010, 10:00:08 PM »
i was going to do that also. I guess my timming was at 6* my first test
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Yota4life

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Re: EGR issues. Need some help
« Reply #69 on: Jan 23, 2010, 03:55:58 PM »
Retard timing 2.5 degrees (you're allowed +- 3 from stock)

i did a retest today and with a exhaust plate with a 1.25" hole in it i got closer to passing but still failed. SO i need a better CA legal cat and i should pass fine... thats all i can think of to do now.
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954toy

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Re: EGR issues. Need some help
« Reply #70 on: Oct 20, 2010, 07:28:51 PM »
how did you do? what was your fix?
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ascdub

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Re: EGR issues. Need some help
« Reply #71 on: Jul 02, 2011, 09:53:35 AM »
wow good article time to start on the checklist everything in this post are alot of the problems i've been having. Does the airflow meter have any effect on this problem?

 
 
 
 
 

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