Where does a 87 Chevy 305 map sensor vacuum line connect?
on the back of the throttle body or intake port.
Why on your 1991 camaro the car runs all right at idle for about 30 seconds with map sensor vacuum line unplugged with it plugged in it immediately stalls could it be the map sensor or something else?
Check the vacuum line on the map sensor for dry rot or other damage. If vacuum line on map sensor is in good condition the map sensor itself may be faulty and need replaced. The car will run with either a faulty map sensor or vacuum line. It would just run badly or stall. It might throw a code but not all the time. Also could be an ignition system problem or spark plugs needing…
Vacuum line missing from the AIR that is connected to the throttle body. where does the other end of the vacuum line connect to?
Evaporated emissions are the fumes that your fuel gives off. The pollution control system pulls them back into the intake to burn them off when you are running your engine. There is a vacuum line that is leaking between the fuel tank and the sensor that detects this or your gas cap is loose or leaking. It could also be a bad sensor which detects vacuum pressures from the tank.
Where can you get a vacuum line routing diagram for a Chevy Scottsdale half ton 4X4 305 with a quadra-jet carb?
It doesn't have a MAF sensor. It uses a MAP sensor. This is usually bolted to the back side of the upper intake plenum or to the firewall. It will have a plug with 3 wires and a vacuum line running to it. It's about 3" long and 1" wide..... Just unscrew the two screws holding it in, unplug the wires and vacuum line and replace with the new one.
EGR valves are usually activated by a vacuum line from a thermal sensor. It could be leaks in the vacuum lines, a failure of the sensor, or a failure of the valve itself. Since the valve is exposed to the heat of the exhaust system, it is prone to jamming from carbon buildup and destruction of the vacuum diaphragm from heat.
Remove the grey upper engine cover, standing in front of the car, you will look over the top of the engine and see fuel rails that go across the top of the engine. The sensor is located at the back of the engine just next to the fuel rails. Its a black, rectangular device that is about an inch and quarter by three inches. There is a 4 wire connector and a vacuum line going…