Bouncy idle with AC
May 16, 2011, 05:12 PM
#1
Bouncy idle with AC
Hey everyone, been having this issue for over a year now. I cannot figure out why my idle starts bouncing with clutched pressed in and AC on.
I adjusted the BISS screw with Evo Scan correctly, no boost leaks. Not sure what else to do.
Car is an Evo IX with all bolt-ons and gs1 cams an SD.
Is there something else I can adjust in the ROM to get my idle back to normal with the AC?
I adjusted the BISS screw with Evo Scan correctly, no boost leaks. Not sure what else to do.
Car is an Evo IX with all bolt-ons and gs1 cams an SD.
Is there something else I can adjust in the ROM to get my idle back to normal with the AC?
May 17, 2011, 08:52 AM
#2
Evolving Member
Join Date: Jul 2009
Location: Moscow, Russia
Posts: 226
Likes: 0
Received 0 Likes
on
0 Posts
Hey everyone, been having this issue for over a year now. I cannot figure out why my idle starts bouncing with clutched pressed in and AC on.
I adjusted the BISS screw with Evo Scan correctly, no boost leaks. Not sure what else to do.
Car is an Evo IX with all bolt-ons and gs1 cams an SD.
Is there something else I can adjust in the ROM to get my idle back to normal with the AC?
I adjusted the BISS screw with Evo Scan correctly, no boost leaks. Not sure what else to do.
Car is an Evo IX with all bolt-ons and gs1 cams an SD.
Is there something else I can adjust in the ROM to get my idle back to normal with the AC?
May 17, 2011, 08:16 PM
#4
Newbie
Join Date: Oct 2010
Posts: 2
Likes: 0
Received 0 Likes
on
0 Posts
I'm having issues as well, except when I turn on my AC the rpms drop down to 400-500rpm. With the ac off it idles right around 1k. Im sure the setting we are looking for is under "idle" "target idle RPM with AC on #1 and #2. I would like to know what the difference is and recommended increments to adjust it. Hope we solve our issues.
May 17, 2011, 09:20 PM
#5
May 20, 2011, 07:32 PM
#7
Evolved Member
iTrader: (11)
Join Date: Jan 2005
Location: United States
Posts: 584
Likes: 0
Received 0 Likes
on
0 Posts
What kind of plug wires are you running?
When did you change them out last?
I had the same problem on/off for a couple years, had Works adjust my flash every time...and then I did a tune up this Spring and put new OE plugs in and I took my old Ralliart wires out that had around 60k miles on them, bought a new set of factory OE plug wires and put the factory plug wires in and everything is just fine. I was mucking around with all of the settings that have been mentioned here and in other threads.
Try a new set of wires, disconnect the battery and let the ECU relearn and see what happens after 100-200 miles of driving.
When did you change them out last?
I had the same problem on/off for a couple years, had Works adjust my flash every time...and then I did a tune up this Spring and put new OE plugs in and I took my old Ralliart wires out that had around 60k miles on them, bought a new set of factory OE plug wires and put the factory plug wires in and everything is just fine. I was mucking around with all of the settings that have been mentioned here and in other threads.
Try a new set of wires, disconnect the battery and let the ECU relearn and see what happens after 100-200 miles of driving.
Last edited by Smoothgangsta; May 20, 2011 at 07:38 PM.
Trending Topics
May 20, 2011, 09:03 PM
#9
Evolving Member
Join Date: Jul 2009
Location: Moscow, Russia
Posts: 226
Likes: 0
Received 0 Likes
on
0 Posts
May 24, 2011, 02:09 PM
#10
It happens when I'm coasting to a stop. I will be driving, let's say 30 mph, put the car into neutral and the rpm will start bouncing between 500rpm to 1400 rpm untill I come to a stop and then everyhting is fine again.
My idle is set at 1k. The BISS via evoscan is also set to 1k. Idle with AC on is set to 1.4K. All these changed made no difference what so ever....
What kind of plug wires are you running?
When did you change them out last?
I had the same problem on/off for a couple years, had Works adjust my flash every time...and then I did a tune up this Spring and put new OE plugs in and I took my old Ralliart wires out that had around 60k miles on them, bought a new set of factory OE plug wires and put the factory plug wires in and everything is just fine. I was mucking around with all of the settings that have been mentioned here and in other threads.
Try a new set of wires, disconnect the battery and let the ECU relearn and see what happens after 100-200 miles of driving.
When did you change them out last?
I had the same problem on/off for a couple years, had Works adjust my flash every time...and then I did a tune up this Spring and put new OE plugs in and I took my old Ralliart wires out that had around 60k miles on them, bought a new set of factory OE plug wires and put the factory plug wires in and everything is just fine. I was mucking around with all of the settings that have been mentioned here and in other threads.
Try a new set of wires, disconnect the battery and let the ECU relearn and see what happens after 100-200 miles of driving.
Thread
Thread Starter
Forum
Replies
Last Post
joeeeclark
General Engine Management / Tuning Forum
4
Dec 3, 2015 08:32 PM
