Surging idle
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TGO Supporter
Joined: Oct 2003
Posts: 302
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From: Houston / The Woodlands, TX
Car: 82 ElCamino, looking for a 3rd gen
Engine: 305 TPI(427SB in progress) 730 $8D
Transmission: THM350 (Getting a 4L80E soon)
Axle/Gears: 10 Bolt w/ 2.43 gears :(
Surging idle
I was running a 165ECM with the 6E mask and had no problems with the idle. After switching over to an 730 with a 8D mask I have a surging problem at idle in or out of gear that I can't figure out and is driving me nuts. Attached is a link to the BIN and Datamaster logs. File 11 is a slight surge and file 7 is a severe surge in the beginning of the log and a slight one at the end of it. http://www.moates.net/files/uploads/305aujp004.bin http://www.moates.net/files/uploads/7.uni http://www.moates.net/files/uploads/11.uni
Supreme Member
Joined: Aug 1999
Posts: 2,441
Likes: 1
From: sweden
Car: GTA -89
Engine: Blown 415"
Transmission: 4L80E
Axle/Gears: Strange 12-bolt
Maybe this could help you out.... (didnt look at your files, just a guess)
https://www.thirdgen.org/techbb2/sho...highlight=idle
https://www.thirdgen.org/techbb2/sho...highlight=idle
Joined: Jul 2000
Posts: 1,519
Likes: 18
From: Fort Myers, FL
Car: 91 Firebird
Engine: 6.0
Transmission: T56
Axle/Gears: 3.73
I followed the directions in the thread that gta324 posted and have had good results. The idle is much more stable now, and driveability has improved. I still need to figure out how to mess with the follow through portion, but I'm getting there
is there a chance we can make small stickies on articles like that? Of course it would need a disclaimer that states "Ensure your vehicle is in good mechanical condition before resorting to changing the settings in the chip" or something like that. What I thought was a sticking idle may be just an over active IAC due to the settings. I did clean the TB thoroughly and ensured that there was no vacum leaks. I also checked for proper operation of the TPS. This is the only thing that made a difference for me.
Just a thought
is there a chance we can make small stickies on articles like that? Of course it would need a disclaimer that states "Ensure your vehicle is in good mechanical condition before resorting to changing the settings in the chip" or something like that. What I thought was a sticking idle may be just an over active IAC due to the settings. I did clean the TB thoroughly and ensured that there was no vacum leaks. I also checked for proper operation of the TPS. This is the only thing that made a difference for me.
Just a thought
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