Q: Transmission modulator valve is not working.

asked by on

I have a 1983 Lincoln continental 5.0 v8 engine that's not shifting so I'd like to replace the modulator but I have no idea where that's located need help!

My car has 500000 miles.
My car has an automatic transmission.

Hi there. The modulator valve is located on the back of the transmission on the passenger side. The valve is vacuum controlled. So, before you replace the valve, be sure to check the vacuum line from the engine to the valve and see if there is engine vacuum there. If there is no or less engine vacuum, then change out the vacuum line and retest the transmission shifting. If the transmission shifts, then that was your issue. If the transmission still does not shift, then I recommend replacing the valve. If you need further assistance with your transmission not shifting, then seek out a professional, such as one from Your Mechanic, to help you.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. Transmission modulator valve is not working.

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: CEL purge valve manifold

Hello there, thank you for asking about your 2011 Mercedes-Benz C63 AMG. If you are suspicious, you may want to hire another facility for a second opinion. Each time the Check Engine Light was illuminated, there's a good chance the...

Q: Q: Need car diagnosed.

I would call YourMechanic to come and diagnose this problem.

Q: How to get a manual stuck in reverse out

In a manual transmission, being stuck in reverse could be due to clutch and/transmission failures. You can try moving the vehicle slightly and/or manipulating the shift mechanism right on the transmission case. That may only provide a temporary solution, though,...

Related articles

How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.