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FD3S rough idle, won't run normal.

Old 08-24-14, 09:12 PM
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Flying Doritos
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QC FD3S rough idle, won't run normal.

Hi guys,

I recently had some problems with my 93 FD3S. The other day I started the engine, let it heat up for 5 min and run normally. I engaged Reverse to get out of my garage, and she started to run strange.

See :
If I didn't hit the gas, rpm was between 500-1000.

I checked the MAP sensor, was okay.
Charged the battery.
Looked for unplugged hoses, everything was in place.

The engine is supposed to be 30,000km old.
I have a Power FC, Greddy BOV, PFS Intercooler, MSD plug wires, new NGK plugs, upgraded pulley kit and a big exhaust lol.

Here's a startup video :
And here's what coming out from the exhaust :

Thanks for helping me out, summer is long without my beauty.
Old 08-27-14, 05:25 PM
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Flying Doritos
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I know it's another poor idle thread, but I need to know where you guys would take a look after the first steps I've done
Old 08-27-14, 11:32 PM
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Mazzei Formula

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How recent were the ignition upgrades/replacements? Make sure your ignition harness is clipped together . Check your plug wires to make sure they are all intact.

What are your vacuum readings if your hold the rpms steady at 1.5k?
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