I removed and capped every vacuum line except the fuel pressure regulator and brake booster. There is a member on here that sells the “test” bypass plug for EGR sensor, so no CEL codes.@slow95z & @Will Van :
By "every one of the switches" do you literally mean EVERYTHING that's running on vacuum?
Did y'all remove every VSV, every check valve, & every single vacuum line?
Basically everything pointed out and bolded on page EG-172 in the FSM?
I'm having serious idling issues with my new to me FZJ80 with OBD1. The previous owner removed the EGR, PAIR, and some vacuum lines are removed/capped off. But I'm not entirely sure what's causing my issues. I replaced the O2 sensors and spark plugs and things seemed to have only worsened.
A few quirks I'm experiencing though:
Until the engine is completely warmed up the engine basically refuses to go beyond 1200 RPM while in Drive. In neutral or park it will slowly increase however high I want it to go, but not in Drive, even with the pedal to the floor.
Additionally, this morning, for the first time, the power steering seemed non-existent at first, then slowly built up to normal when pulling out of my parking garage. And my brakes seemed to not function when I was reversing out of my parking spot as well. I quickly popped it from reverse to neutral and then the brakes seemed to function normally, and were fine after that.