Hello.
I could really use some help. I lost power and the car wouldn't start. I checked the computer and the only error code was the vacuum sensor. If I unplug the vacuum sensor on the firewall, the engine will at least start but not rev past 1,200 RPM. I now have a new $360 dollar Toyota sensor and the car still will not run.
During my testing with the sensor unplugged, I then noticed the exhaust down pipe was glowing red and there was air blowing out of the vacuum lines vs. sucking air in.
I then thought that maybe I had blockage in my exhaust. I removed the exhaust at the Catalytic converter and it seems to run easier but I still have air coming out of the vacuum lines (the line going to the pressure sensor & at the valve cover). Before taking the exhaust off, I could only get the RPM up to 1,000 without the sensor. With the exhaust off, I can get the RPM up to 1,200.
At this point, if I plug in the vacuum sensor wire harness then the car stalls very quickly. I have the exhaust off the car right now and the brand new sensor installed.
What should I be looking at? I am confused. Do I have a sticking or bent valve? I don't hear any funny noises and the car seems to turn over easily. I put a wrench on the crank and can readily turn it.
I have not pulled the valve cover off yet.
I could really use some help right now as I don't know what to make of these symptoms.