Car Feels jumpy

[Captain-Obvious™]

Car is a 1996 Integra with a b18b that I swapped myself. Transmission is an s4c that I got with the motor. I'm running an obd2a LS ecu. Harness is an obd2a GSR as the shell is a GSR.

When I start off in 1st gear the car jumps forward and back like a person who just learned to drive a 5 speed is driving. It also does it in second after you switch to second if you don't work the gas/cluch just right. It won't do it if you press the gas harder than a person would when accelerating normal. Engine revs perfecting smooth in neutral. I have been driving manual since I was 15 and I drive my girls type s and my friend's cars just fine so it's not an operator problem.

I thought it might be a clutch problem so I replaced the clutch/flywheel/throwout bearing. The problem was not solved. The only CEL I have is secondary o2 and I've never heard of that causing this problem. Or of this problem happening to anyone for that matter. Does anybody have any suggestions? I've been driving the car like this for nearly a year and I'm about sick of it.

[EmminoDaGreat]

make sure all the connectors are plugged in right as far as iacv, iat, etc. Since they all look the same, just wire colors are different.

[Captain-Obvious™]

They are all correct. If you unplug IACV the car shuts off so I know that plug is right. I had an IAT Check light until I got the sensor in. The light is gone now So I am assuming the plug must be correct. TPS is correct because the car won't rev past 3 without it.

[EmminoDaGreat]

Normally when you unplug an iacv it will idle up and down quickly, so its potentially a bad iacv, since its really jerky.

[Captain-Obvious™]

Normally when you unplug an iacv it will idle up and down quickly, so its potentially a bad iacv, since its really jerky.

Hmmm. I haven't thought of that. I'll try that first and get back to you.

[Captain-Obvious™]

May take a while though, seems that they're pretty pricey.

[JDMJ]

May take a while though, seems that they're pretty pricey.

i have like 3

[silversol]

May take a while though, seems that they're pretty pricey.

I have a new Iacv for cheap if your interested.

[Captain-Obvious™]

I have a new Iacv for cheap if your interested.

What's cheap and can you ship?

[jonbuice5591]

i had this same probem with my 95 teg. it would jerk like hell and i took it to the shop and thats what it was IACV. so that should fix ur problem

[Sammich]

why dont you clean up the iacv, D-boy

[HeyItsSkeero]

Try cleaning it first with brake cleaner. If that doesn't fix it I'll send you the one I got from oriellys for $30 if you send me yours back in return lol. It hasn't been used yet, and I'll just exchange yours lol.

[Captain-Obvious™]

Try cleaning it first with brake cleaner. If that doesn't fix it I'll send you the one I got from oriellys for $30 if you send me yours back in return lol. It hasn't been used yet, and I'll just exchange yours lol.

I already cleaned mine a few weeks ago.

[Sammich]

well damn...FITV too?

[Captain-Obvious™]

Put a brand new IACV on the car. No help. I added a ground to the IM and one to the block because when I hit the gas hard the coolant temp gauge tends to fall off as well as my speedo. I figured it was probably a ground problem, but that doesn't seem to be the case. This leads me to believe maybe there's a wiring issue having to do with the throttle position sensor?

[Captain-Obvious™]

Anyone?