Too hard throttle response at low rpm
My first post here, but have been lurking around for some time now.
I just bought my first camaro.
1997 with LT1
Edelbrock Performer heads
BBK nickel plated shorty headers
MSD opti spark
The engine has new pistons, rods, and bearings all over about 25.000km ago. (Due to lack of engine fluid)
It runs really great and pulls strong. But I have noticed a strange problem with low rpm. People always seem to complain about lack of throttle respons. My problem is kind of reverse. It has too much throttle respons from idle / low rpm.
It idles fine and stable. A little high around 1000 rpm.
If I very slowly press the gas pedal from idle, it jumps straight up to about 1600-1700 rpm. When I release the pedal it drops down to idle speed as normal. Its impossible to make an easy throttle from idle, and hit a rpm between 1000 and 1700(ish) rpm. It jumps from idle to 1700.
Same goes when cruising at slow speed with low rpm.
An example: If I try cruising with cruisecontrol below 1700 rpm, it kind a accelerate > engine brake > accelerate > engine brake.
I meassured the voltage on TPS. Idle shows 0,55v and WOT shows 4,95v - No jumps when slowly goes WOT
I tried reset the IAC valve - no luck
Does anyone have any good ideas ?
Thanks in advance.