OLD
so if anyone remembers, i have a high idle problem after redoing the motor. to recap everything, here is what it has always done. starts and idles fine on a dead cold start every time. once you drive it, the idle then raises. basically, if you kick in the clutch or put the car in neutral, it will idle at 1500 or so for a 5-10 seconds or so and then finally come down. also, every time you restart the car on a warm start, it idles at 2k rpm right away, and very very slowly comes down to normal...probably 10-15 seconds to reach completely normal idle. Now, if you let the idle go down to normal on a warm start and then drive it again, it will do the same excact high idle problem....BUT if you start to drive the car before the idle comes down (on warm starts where it jumps to 2k rpm right away) the car will want to retain that idle until you slow to a stop and let it run for 10-20 seconds for the idle to return to normal. it is terrible. it wants to run high and will accelerate the car by itself in this situation. it wont accelerate very much, but a mph every minute or so.
NEW
Now, here is what i just discovered yesterday... I can downshift through all the gears coming to a stop and eliminate the high idle. here's what i did; i downshifted while stopping slowly until i got into first gear. i took it down as low as i could go in first gear (the cam only allows me about 10mph before the rpm is too low for the engine to run right.). Once i hit aobut 10mph, i kicked in the clutch and stopped right away. the idle jumped to 1500rpm for a split second and then dropped right away to normal idle. I then drove the car down the road at 50mph and took the car out of gear. the idle went to 1500 or so and stayed there forever. It didn't even think about coming down until i stopped. once i stopped, the car returned to normal idle within a few seconds. discovering this led me to believe it is speed related but what the hell? any thoughts on why engine speed in neutral would be speed related????? i have the mods below.

 

Didn't someone already suggest that it might be a problem in the "follower" table in the tune? The PCM elevates the RPM when the VSS signal is not equal to "0".... i.e. the car is still moving.

 

i can zero out the follower tables and see what happens. So why would the pcm want the engine to run a higher rpm when the car is in motion? Then again, the pcm doesn't know when i push in the clutch, but still i didn't think it would want to aid the engine that much once moving. here's my " throttle follower IAC offset vs. mph" table numbers.... this is on Tunercat.
mph steps
0 3
4 4
8 8
12 12
16 16
20 20
24 20
28 20
32 20
36 20
40 20
44 20
48 20
52 20
56 20
60 20
64 20
would a bad VSS have anything to do with it. I could possibly have one out. my abs inop light is on. the ground is good and the 3rd brake light works. thanks for the help injuneer. should i zero out the follower tables?

 

it doesn't show very well in the post, but all the numbers to the right are supposed to be under the "steps" column.

 

i put 1's in all the columns and it made it better. warm starts are'nt quite as high on the idle side. only thing i found bad was that the idle was at 1500 a few times sitting still, whereas before it would come down once you stop. it onlydid this a couple times durring the whole drive, but it still sucks. also, the car doesn't seem to have as much surging now that i filled the columns with "1"'s...???

 

ok, so if i let the car slow down in gear to about 1000 rpm and then push in the clutch, it idles fine right off the bat. any ideas?