Where is the transmission modulator located?
Most of the time, the transmission modulator valve is located somewhere near the rear of the transmission. Pull the hose off of the intake manifold and transmission modulator valve and set it aside.
Where is the fuse box on a 1997 Cadillac Deville?
It’s on the drivers side wheelhouse (under the hood) as well as I can remember.
Where is the fuse box located in a 1999 Cadillac DeVille?
This fuse block is located on the front wall of the trunk (behind the rear seat) on the driver’s side.
What does a modulator do on a transmission?
The modulator valve is attached to the intake manifold with a vacuum line. It senses intake manifold vacuum and shifts the transmission accordingly: When you press down on the gas pedal, the throttle plate opens and the vacuum is reduced. The modulator valve will cause the transmission to downshift.
Where is the ECU fuse located on a 2004 Cadillac Deville?
It is located under the air filter box for cooling purposes.
How much did a Cadillac cost in 1997?
1997 Cadillac DeVille Retail Prices
| Trim | MSRP | CarGurus Instant Market Value |
|---|---|---|
| Concours Sedan FWD | $42,660 | $4,088 |
| Sedan FWD | $37,660 | N/A |
| d’Elegance Sedan FWD | $40,660 | $5,008 |
How does a transmission vacuum modulator work?
A lot of people take gear shifts in their vehicle for granted. But every time your automatic transmission needs to shift into a different gear, there is a vacuum modulator inside which ensures that the gear shift can be successfully completed. How Does a Transmission Vacuum Modulator Work? How Does a Transmission Vacuum Modulator Work?
What should I do if my modulator valve fails?
Newer transmissions usually don’t use them, but they are common in older transmissions. Here, you’ll learn about how modulator valves work and what to do when your modulator valve fails.
How is the modulator connected to the engine?
The modulator is connected to the engine through a combination of steel tubing and rubber hoses. When higher amounts of engine vacuum act on the modulator, the transmission begins to shift earlier and softer. As engine loads increase, vacuum diminishes, causing the transmission to shift later…
When do you know you have a bad vacuum modulator?
Most people find this out when they have an emissions test done on their car, which is required by some states. If you’re experiencing all of the above symptoms while having shifting problems too, then you likely have a faulty transmission vacuum modulator. As you just learned, the vacuum modulator is what allows the transmission to shift properly.