BMW Turbo Discussion - BMW 745i and BMW Turbo Project Forums ...
Hey guys!! Haven't posted on here in a while but been steadily at work on the 745. INjectors were just ultrasonically cleaned, new intake gaskets and new intake rubber. Removed Johnson box, a big improvement!! Smoother idle and no more hesitation off idle when warm. The problem now is under full throttle and boost, it is cutting out. It did not do this prior to removal of JB.Wiring is correct back to stock, fuel psi is 37 pulling 17" vacuum at warm idle, just dialed in TPS though it wasn't terribly far out of adjustment. With vacuum/boost gauge installed, runs fine to 3psi, as soon as I stomp on it, above 3psi the gauge goes NUTS! It bounces all over the range until I back off the pedal. Any thoughts anyone else had this problem after JB removal?? Coming up on a year now since I've owned it, and considering the condition it was in when I drove it home(small miracle), I am very pleased with how it is now!! THanks for any help, guys!! Thanks Scottie, that was going to be the next thing I check. I looked under the boot, though, and it's not there, but I seem to recall someone else on the board finding theirs several inches from the plug, so I'll keep looking. Other than the cutting out, yanking the JB is one of the best things I've done to the car yet, thanks to the forum!!
Hey guys!! Haven't posted on here in a while but been steadily at work on the 745. INjectors were just ultrasonically cleaned, new intake gaskets and new intake rubber. Removed Johnson box, a big improvement!! Smoother idle and no more hesitation off idle when warm. The problem now is under full throttle and boost, it is cutting out. It did not do this prior to removal of JB.Wiring is correct back to stock, fuel psi is 37 pulling 17" vacuum at warm idle, just dialed in TPS though it wasn't terribly far out of adjustment. With vacuum/boost gauge installed, runs fine to 3psi, as soon as I stomp on it, above 3psi the gauge goes NUTS! It bounces all over the range until I back off the pedal. Any thoughts...