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Old 03-19-2014, 07:12 AM
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Idleing high after upgrading injectors... Fan?

Recently upgraded to 175/30s and my truck has been wanting to idle around 1000 rpms ever since. When i start it and its cold it goes straight to 1000 and stays there until i put it in gear with my foot on the brake.

Going down the road it idles at 1000 until i am almost at a complete stopped.

If i start the truck up and its warm it idles regular like 500 rpm

I heard this was normal from RCD

But I also heard from someone else that it is a issue with the fan?

"its the fan control problem..that control circuit engages the fan when engine is hot and kicks it out of overdrive so the fan can spin faster..it also keeps eng"ine revving so fan pulls air through the radiator..if the connector is broken or not plugged in,,these problems are the result."

anyone know who is right, RCD or Joe Blow?

By the way i still have my egr valve plugged in.

Last edited by bwstone92; 03-19-2014 at 07:32 AM. Reason: More INFO
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Old 03-19-2014, 07:33 AM
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Some strategies go to 1k when cold to prevent other injector issues. Perhaps you have that strategy and didn't notice before installing your injectors. It is also possible that the plugged injectors are part of the cause as well, depending on what tune you are running you will see some idle anomalies, especially when coasting.
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Old 03-19-2014, 07:42 AM
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Definitely get a bit of a lope as i decelerate, but yeah thats pretty much what RCD said.
I believe TSD changed my strategy when he created new tunes for my injectors so that sounds about right then.

I dont really mind it but sometimes its annoying having to ride the brake harder or more often. I guess pads are cheaper than injectors so makes sense.

If I understand correctly once you get over like 175/30 injector they mostly run open spill ports?
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Old 03-19-2014, 09:31 AM
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No, most are plugged unless specified otherwise. Once you get to 190, they are all plugged, except in very rare builds.

Quote:
its annoying having to ride the brake harder or more often
Get your tune adjusted if this is happening once warmed up.
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