Hey guys I have been searching, but I just swapped my stock tb for the jeep tb, and it works great, but now when I am slowing down like at a light, and I step on the clutch, my rpms don't drop, but rather stay at about 2000...never did that before with the stock. The car idles fine at 800-900 rpm, but when I first push the clutch pedal in, the rpms hang at 2000. Any idea why? Thanks

Two possibilites that I can think of off the top of my head:

Check to see if the throttle is closing all the way (cable).
TPS could be giving a wrong voltage.

in theory the ECU should keep the RPM's at 1200-1400ish until you come to a complete stop to strengthen the vacuum pressure in order to ensure easy brake modulation.

forgetting for a minute that i have no experience with the 60mm General Purpose throttle body, it would be my best guess that the different throttle body reacts differently with the stock ECU. maybe it has a larger IAC passageway or something?

nah... if it was that, idle would be affected too. hmmmmm...

2016 WRX STi Limited (current)
2001 A4 1.8tqms (donated)
1991 GVR4 #1933 (sold)
old.dsmregistry.com/detail.php?carid=218 (dismantled)

Mine does that too. Mostley when I'm cruisin on the highway for a while. When I come the first stop, the car will hang, what I found I hafta do is shut car off and restart, sometimes if I tapp the gas it will go narmal. Since I don't do much highway travel with my car this hasn't been a problem for me so far.

~Lee

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***MODS***
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Thanks guys, I do I the same, just tap the gas and it drops to 900 rpm, but when I am coming to a stop, it will hang around 2000-1500 rpm, doesn't really bother me, I just something was wrong with my install. I'll keep you guys updated if I can figure something out

*Skrilla
"Honest officer, I thought you were trying to race me"
Talon: 1st 2.4L
'97 Prelude
'04 350Z

Originally posted by etx
Good luck man! Project 'STFU Brian your talon is dead meat' should be on it's feet soon!

They all develope this behavior eventually. I wrote it off as normal a long time ago.

Wanna see something neat, though? Unplug your speed sensor, and i bet it won't do that. This leads me to believe the ECU does this purposely - it knows the car is moving (vss input) so it keeps the idle up.

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'99 Eclipse RS-T (daily beater)
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Mine does the exact thing at 2000rpms, but it still does it even when its completely stopped, maybe/sometimes (very rare) it will drop to about 1k, after I sit still for a while.. hell if I know

~STV~

__________________________________________
~Chris
03 SRT-4