JDSfastGN
Well-Known Member
- Joined
- Jun 16, 2001
- Messages
- 3,506
i'm having a strange problem at part throttle. When ever im in 1st gear and go lets say 1/4 throttle and get 10 psi or so, the car bucks and stutters until i give it more gas and it smoothes out. It does it at the latter rpms of 2nd and 3rd as well. WOT is fine as well as a little less throttle than 1/4(normal driving). It really doesn't act or feel like compressor surge, but more like when ya blow an intercooler hose off and the car bucks and chugs until you get enough throttle into it to blow past the leak. I have changed plugs, new wires, it has a new coil pack, switched modules with a known good one, changed fuel filters, swapped to a different LT1 sensor, new 02 sensor, PCV is new, and I've sprayed everywhere for leaks and double checked all my intercooler hoses and checked all the grounds. What am I missing?
My BLMs move around a bit but stay in the 120s, integrator is usually around 126-130, IACs are 000 at idle when warmed up, MAT sensor reads fine, MAFs are around 4-6.
The only weird thing i can think of is that recently my car started to like lower fuel pressure settings, its at 38 line off, and running 16.5 psi with no knock even in overdrive on 93. My car used to like 43-44 or so but i started fouling plugs and running crappy. The EGR works fine as well, and nothing else seems to be a problem. I'm running the wastegate tuner style as well now because my solenoid was allowing creep in the upper rpms of 3rd. Sorry for the length, just trying to provide a lot of info
My BLMs move around a bit but stay in the 120s, integrator is usually around 126-130, IACs are 000 at idle when warmed up, MAT sensor reads fine, MAFs are around 4-6.
The only weird thing i can think of is that recently my car started to like lower fuel pressure settings, its at 38 line off, and running 16.5 psi with no knock even in overdrive on 93. My car used to like 43-44 or so but i started fouling plugs and running crappy. The EGR works fine as well, and nothing else seems to be a problem. I'm running the wastegate tuner style as well now because my solenoid was allowing creep in the upper rpms of 3rd. Sorry for the length, just trying to provide a lot of info