My car is doing some weird stuff,If I ease into the throttle and let the turbo spool on its own I get normal o2's,If I nail it and it kicks down and accelerates as fast as possible I get o2's in the low 700's and I also get about 3-4.5 degrees of retard.I have had a problem with knock and for some wierd reason it seemed to start when I put my rjc power plate in.I thought it might have been bad gass but I don't know.My blms are fine and I don't get knock betewwen gears.My fp is fine and boost is only at 15psi.Also when I start up cold my fuel pressure will be at 45 and by the time I run it a little and check it again it drops like 3-4psi by itself.If I let the car cool down it will go back to the original setting.I think I have a few gremlins loose in my car
wierd o2's
- Thread starter gnturbo
- Start date
Welcome!
By registering with us, you'll be able to discuss, share and private message with other members of our community.
the regulator is a new accufab billet one and the line hisses pretty good when I take it off to adjust fp.I have found that my pcv may be blowing by because it is a little oily around my vacuum block.Could any oil in there block or throw off vacuum in that whole system?
- Joined
- May 28, 2001
- Messages
- 16,756
FP ??
I have an idea that, since the fuel pressure becomes erratic after the car is driven for a while, that the fuel pump is getting hot and is losing performance. [This is backed up by the comment that after cool down, it is normal]
Another problem could be the alternator. Once it gets hot, the output drops and thus the fuel pump slows down.
I'd check the alt output cold and hot, and do a load test on the battery too.
If the pump has not been changed, I'd install a WALBRO 340 or the HOLLEY "forced induction" pump and a new sock.
The current pump IS hotwired, right??
Next, check ALL the grounds and power wires on the car...[I even add a heavy grnd cable from the engine to the frame.] Check the positive cable from the batt to the starter..
I have an idea that, since the fuel pressure becomes erratic after the car is driven for a while, that the fuel pump is getting hot and is losing performance. [This is backed up by the comment that after cool down, it is normal]
Another problem could be the alternator. Once it gets hot, the output drops and thus the fuel pump slows down.
I'd check the alt output cold and hot, and do a load test on the battery too.
If the pump has not been changed, I'd install a WALBRO 340 or the HOLLEY "forced induction" pump and a new sock.
The current pump IS hotwired, right??
Next, check ALL the grounds and power wires on the car...[I even add a heavy grnd cable from the engine to the frame.] Check the positive cable from the batt to the starter..
Just installed a racetronix walbro340 with hotwire about a month ago,Could be the alternator but my volts are always good looking at the scanmaster.I was thinking it maybe the fuel pump but man it's brand new.So is the regulator.the only thing not new are the injectors.
