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86-95 Trucks & 4Runners 2nd/3rd gen pickups, and 1st/2nd gen 4Runners with IFS

Idle surge

Old 05-04-2019, 11:22 AM
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Idle surge

So I deleted egr, a couple vacuum lines, and the air injection on my 89 3vze and I got a bad idle surge now, never had it before, I have no engine lights or codes, I canít run it for very long at the moment because thereís no coolant in it, I just started it up to make sure it would run and thatís when I found the idle surge, Iíll link a YouTube video of it happening

At the start of the video when I start it up thereís also a small backfire

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Old 05-04-2019, 06:44 PM
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Typical symptoms of the idle being to high while the IDL signal from the tps is telling the ECU the throttle is closed..

Check for vacuum leaks and adjust the idle control screw.

PS pretty sure the VZE has the same iacv as the 22re, you need liquid in the coolant system. As well the ECT and coldstart timer rely on this liquid.
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Old 05-06-2019, 12:16 PM
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Idle surge

So the surge goes away after a couple minutes but it runs really rough, Iíve tried adjusting my idle but It doesnít seem to help any, I deleted this thing idk what it is or does but it gets bolted to the front of the intake, one bolt holds it on, it has vacuum lines going to the fuel pressure regulator, I know I need the regulator but do I need the other thing, if anyone has deleted egr would you mind sending some pictures of your vacuum lines or give your thoughts, Iím trying to get her to run better I miss driving it
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Old 05-06-2019, 03:25 PM
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Originally Posted by Cameron13588 View Post
... I deleted this thing idk what it is or does ... do I need the other thing, ...
Seriously?

Why don't you take a picture of "the thing." Maybe someone can help you.

OR, put it all back together. That will probably solve your problem.
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Old 05-14-2019, 04:37 AM
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So I got er figured out, I needed to put the part in the picture back on and run some vacuum lines, the surge eventually went away Iím guessing because the computer did itís relearn, like whoever replied saying that the computer had to relearn


[img]blob:https://www.yotatech.com/33759e9b-5a80-467b-aee0-a19df5247cf2[/img]

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Old 05-14-2019, 11:13 AM
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this is a great thread. turns out, randomly pulling parts off your engine causes it to run weird.
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Old 05-14-2019, 11:18 AM
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Oh ˟˟˟˟˟ off bud donít get smart, I had to delete the egr because it broke trying to pull it off and I wasnít paying 200 or whatever dollars and I thought I could delete that also and it turned out I couldnít, nobody likes a know it all
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Old 05-14-2019, 11:22 AM
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Originally Posted by Cameron13588 View Post
Oh ˟˟˟˟˟ off bud donít get smart, I had to delete the egr because it broke trying to pull it off and I wasnít paying 200 or whatever dollars and I thought I could delete that also and it turned out I couldnít, nobody likes a know it all
sorry, dude I just said what everyone was thinking. the right answer, although you don't want to hear it, was to study the vacuum diagram supplied under your hood (or online if yours is gone) before you started yanking parts off your truck. further more, the majority of people here would tell you not to delete the system anyways, but to repair the part you broke, seeing as how it would have been faster and more efficient, and not given you any of these problems.
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Old 05-14-2019, 11:57 AM
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Originally Posted by Cameron13588 View Post
Oh ˟˟˟˟˟ off bud donít get smart, I had to delete the egr because it broke trying to pull it off and I wasnít paying 200 or whatever dollars and I thought I could delete that also and it turned out I couldnít, nobody likes a know it all
turns out, i can't stand dumbasses, and can tolerate know-it-alls that actually do know-it-all. and keycw is 100% correct; most of the competent help here would have recommended putting the correct parts back on the vehicle and repairing the broken part, which would likely solve your idle issue. who would have thought, indeed?

i've never had good luck yanking random parts off of engines, especially those parts whose function i don't understand.
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