Intermittent Hesitation at low idle

[TheWeirdedOne]

I'm in some serious need of help here with my 91 Accord LX Coupe. I'm currently banging my head against the wall trying to resolve this issue with my f22a1. Here's the story:

About 3 weeks ago I started experiencing this shudder when taking off from stop lights. It was very intermittent and didn't happen too often. Then, yesterday it decided it wanted to happen almost every time I took off. If I keep my foot on the gas, it would eventually clear up and the car acted normal. It was acting as though I had bad gas or something. The CEL does NOT light and it's NOT giving me any codes.

Since I'm already about $300 in parts into this thing and I have NO idea what to do next, I'm pleading for some help. Does anyone have any experience with this issue? Or does anyone have any idea what to do next? I'd greatly appreciate the help.

What I've Noticed:
If the idle is over 1k, it takes off alright. Before the issue shows up, my idle will drop to roughly 600.

When the issue is happening, If I turn the ignition off and immediately back on again, the issue resolves.

Here's what has been done:
Replaced:
Plugs NGK
Cap and Rotor
Ignition Control Module
Ignition Coil
Ignition Switch
Fuel Filter

Cleaned:
EGR Valve

Liquids:
Lucas

I have done some research on this forum and I found this post:
From 2005

Unfortunately I don't see an actual resolution in that thread.

Please help, it's my only car and I'd like to feel a bit safer when driving it. Thank you!

[sonikaccord]

Is your egr system clean?

[TheWeirdedOne]

Is your egr system clean?

Sure is, cleaned it out yesterday and even tried a buddy's egr.

[Accordpeddler]

Did you pull a vacuum on EGR (remove small hose may have number 16 from EGR and put on ANOTHER hose then use it to pull the vacuum. If you did this did engine stay running or stall?

[CB7NWDD]

Clean IACV, it's free if you've got carb cleaner, and can cause that kind of issue.

[TheWeirdedOne]

Did you pull a vacuum on EGR (remove small hose may have number 16 from EGR and put on ANOTHER hose then use it to pull the vacuum. If you did this did engine stay running or stall?

Sorry for the slow response, I did pull the vacuum line, number 16, from the egr. There was no vacuum on that line. I swapped it with line 8 from the box by the battery. The engine dropped about 400 rpm. Bringing the idle down to barely registering on the tach.

CB7NWDD, I pulled off the IACV and cleaned the hell out of it today. Only time is going to tell if the issue is resolved. I hate intermittent problems like this lol.

[SPLCB7]

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