shanelach
05-04-2010, 03:36 PM
OK so about a month or so ago, I did a small pull through second and some of third. The pull was on 9 lbs, stock SR, nothing major. Don't usually drive on 9 lbs though, just stock 7. After doing so, my engine started bogging under acceleration. I thought, "Oh, coupler popped, no big deal." I was wrong. I started going through everything and couldn't find anything wrong. I went over my maf wiring and shit and couldn't find anything wrong. After a couple of days the problem went away completely.
As of late last week the problem returned. It stumbles bad and wants to die under acceleration after the engine is warm and has been driving for 20 minutes or so. It isn't every time I put a load on it though. Maybe every 3 or 4 throttle hits. It also bogs once and a while around 2K RPM's cruising. When it starts bogging, bucking, back firing lightly, and wanting to die, if I stay on it it will smooth out around 3K and run all the way to red line.
I have changed out my coilpacks, all of the poppets in the injectors seem to be opening, because i placed a screw driver on the injectors and put my ear against it. Steady clicking on every one and speed up with revs at a stop. I checked my CAS timing and it is spot on as well. Dots line up and I am 15 degrees BTDC. Fuel pressure is at 37 PSI with the vac line hooked up. Coil pack harness seems to be good to go, and the ground is bolted up. I checked the TPS and it was good, and threw a coolant temp sensor at it as well. That didn't change anything. I am not throwing any codes either.
The car does not smoke or anything. No oil in pipes, nothing in the IC, vacuum is at 23"HG, and the engine hits boost fine.
Not sure if I missed anything I covered. I'll edit if I remember anything. Thanks for the assistance.
As of late last week the problem returned. It stumbles bad and wants to die under acceleration after the engine is warm and has been driving for 20 minutes or so. It isn't every time I put a load on it though. Maybe every 3 or 4 throttle hits. It also bogs once and a while around 2K RPM's cruising. When it starts bogging, bucking, back firing lightly, and wanting to die, if I stay on it it will smooth out around 3K and run all the way to red line.
I have changed out my coilpacks, all of the poppets in the injectors seem to be opening, because i placed a screw driver on the injectors and put my ear against it. Steady clicking on every one and speed up with revs at a stop. I checked my CAS timing and it is spot on as well. Dots line up and I am 15 degrees BTDC. Fuel pressure is at 37 PSI with the vac line hooked up. Coil pack harness seems to be good to go, and the ground is bolted up. I checked the TPS and it was good, and threw a coolant temp sensor at it as well. That didn't change anything. I am not throwing any codes either.
The car does not smoke or anything. No oil in pipes, nothing in the IC, vacuum is at 23"HG, and the engine hits boost fine.
Not sure if I missed anything I covered. I'll edit if I remember anything. Thanks for the assistance.