I have the same problem. I found out that my vacum motter is good. I jacked the truck up-all 4 wheels off the ground and jack stands on all 4 corners. on the vacum moter(on the axle) the connection on the pass siide is the vacum, I put a hose on it and sucked- the 2 conections are drivers side is on , pass side is off. I could engage the 4wheel drive this way. then I traced the vacum line to the back of the trasfer case on the top there is a vacum switcth, 4 lines to it red = black to vacum moter and white +green to the front of thetruck drivers sidebehind valve cover. this is as far as I got, I need someone else on top of the truck as I wiggle the wires to see where they go- also help to remove the air cleaner. its 20degrees outside and My fingrers are frozen. oh, I had no vacum at the switch on top of the transfer case,..
Broken or disconneted duct? vacuum actuated motor not working due to a vacuum leak? selector switch not working?
Check for vacuum leak either under hood or under dash Check for bad vacuum motor underdash Check for bad selector switch
Assuming you have no speeds including HI I would check for power at the connection at the blower motor with ignition and switches on. If you have power the motor is shot. If you have no power go back and check the fuses. If the fuses are good check the switch and electrial plug at the switch for damage. If the blower motor speed resistor was burned out you would still have HI speed.
There is no fixing a broken motor mount. Replace them with a new ones.
First check your throttle body sensor and then your (iac) motor. Last but not least it could be your plenum gasket or a leak in your vacuum system
A diagram for a vacuum system of a 1976 440 Dodge motor home can found in its maintenance manual. It can also be found in its repair manual.
First check to see if the front drive shaft turns. If it turns then check for 4wd light. If no light then your vacuum shift motor is not working. On the top of your axle there is box bolted on the axle with an eletrical conector and two vacuum tubes. There are three reasons why it doesn't work. 1. There is no vacuum to the motor, check for vacuum pressure at the motor. 2. the solenoid (part where vacuum hoses connects) put about 15hg vacuum on outside vacuum port and block off inside port. With vacuum on jack up front end and try to tun drivers side tire. If drive shaft turns when you turn the wheel then problem is related to vacuum. if not then either solenoid is bad or the guide bushing inside is bad. Unbolt the shift motor and try to slide the spline conector back and forth. You should be able to push the connector over fairly easy, you might have to turn the tire a little. If it does not slide over the other axle then the bushing is bad and you'll need to pull the axle and replace. If it slides over the other axle then the solenoid is bad.
The Dodge Intrepid was always front wheel drive.
It is computer controlled and is not adjustable.If idle speed is incorrect, you will need to check for vacuum leaks, inaccurate sensors, or a failing idle airflow control motor.It is computer controlled and is not adjustable.If idle speed is incorrect, you will need to check for vacuum leaks, inaccurate sensors, or a failing idle airflow control motor.
Check for vacuum leak or bad vacuum motor Check selector control
Check vacuum hoses against diagram located in manual or under hood. Check ingine timing and idle speed.
Broken or disconneted duct? vacuum actuated motor not working due to a vacuum leak? selector switch not working?
First check for a blown fuse. Check to see if there is power at the motor. If there is power at the motor then the motor itself is bad.
Front wheel drive check cv joints, motor mounts, steering bushings, and bearings, rear wheel drive check motor mounts, universals, drive shaft, bearings, and steering bushings.
Check for vacuum leak either under hood or under dash Check for bad vacuum motor underdash Check for bad selector switch
Check for a vacuum leak on the intake. if there is no vacuum leak then you will need to rebuild the carburator. if your bike is injected change out the injecters
hook a vacuum gauge up to any of the rubber hoses that are coming out of the intake manifold, such as the brake booster....