How To Test Governor Pressure Sensor 46re

Okay, picture this: I'm cruising down the highway, windows down, singing along to some terrible 80s power ballad (don't judge!). Suddenly, BAM! My trusty old Dodge Ram starts shifting all wonky. Like, REALLY wonky. It was shifting hard, sometimes not at all, and generally acting like it had a personal vendetta against smooth gear changes. After a lot of head-scratching and Googling (because let's be honest, who actually knows what's going on under the hood, am I right?), I stumbled upon the culprit: the dreaded Governor Pressure Sensor.

Turns out, this little guy is a crucial component of the 46RE transmission, telling it when to shift gears. When it goes bad, it can cause all sorts of shifting nightmares. So, if you're experiencing similar transmission troubles, keep reading! We're going to dive into how to test that pesky Governor Pressure Sensor.

What IS a Governor Pressure Sensor, Anyway?

Before we get our hands dirty, let’s cover the basics. The Governor Pressure Sensor is basically a little pressure-sensitive dude inside your transmission. It monitors the governor pressure, which, in turn, tells your transmission's computer (the PCM) when to shift. Think of it as the transmission's internal GPS, guiding it through the gear changes.

If this sensor is sending inaccurate information, your transmission will shift poorly, or not at all. Sounds annoying, right? It is.

Symptoms of a Failing Governor Pressure Sensor

How do you know if your Governor Pressure Sensor is the one causing all the drama? Here are a few telltale signs:

• Erratic shifting: This is a big one. If your transmission is shifting at weird times or skipping gears, suspect the sensor.
• Harsh shifting: Feels like you're being thrown around in a boxing ring every time it shifts? Yeah, that's not normal.
• Stuck in gear: Sometimes, it might just refuse to shift at all. Frustrating, to say the least.
• Trouble codes: Your check engine light might illuminate, throwing codes like P1762 or P1763. Of course, it could be anything triggering that light, but it's a clue.

Testing Time: Let's Get Our Hands Dirty!

Alright, enough talk! Let's get down to business. Testing the Governor Pressure Sensor isn't rocket science, but you will need a few basic tools:

• Multimeter: A must-have for any DIY mechanic. Seriously, invest in one.
• Wiring diagram: This will help you identify the correct wires. Don't just guess!

The Resistance Test: A Good Starting Point

The easiest way to check the sensor is by measuring its resistance. Here's how:

1. Locate the sensor: This is usually inside the transmission pan, so you'll likely need to drop the pan to access it. (Yeah, I know, messy. But think of it as a bonding experience with your truck!)
2. Disconnect the connector: Unplug the electrical connector from the sensor.
3. Set your multimeter: Set it to measure resistance (Ohms).
4. Test the terminals: Place the multimeter probes on the sensor's terminals. Check your wiring diagram to confirm which terminals to test.

Now, compare your reading to the manufacturer's specifications. This is crucial! You can find these specs online or in a repair manual.

If the resistance is way off (too high, too low, or zero), your sensor is likely bad. Congratulations, you've pinpointed the problem!

The Voltage Test: For a More In-Depth Look

You can also test the voltage output of the sensor while the engine is running. This is a bit more involved but provides a more complete picture.

1. Reconnect the connector: Plug the electrical connector back into the sensor.
2. Backprobe the connector: Use backprobing pins to access the wires without damaging them. You'll need to identify the signal wire.
3. Set your multimeter: Set it to measure DC voltage.
4. Start the engine: With the engine running in park, observe the voltage reading. As the engine speed increases (gradually!), the voltage should also increase.

If the voltage doesn't change or is erratic, your sensor is probably malfunctioning.

Important Considerations

• Cleanliness is key: When working inside the transmission, make sure everything is spotless. Contamination can wreak havoc.
• Safety first: Always disconnect the battery before working on electrical components.
• When in doubt, ask a pro: If you're not comfortable with any of these steps, don't hesitate to take your vehicle to a qualified mechanic. Better safe than sorry!

So, there you have it! Testing your 46RE Governor Pressure Sensor isn't as daunting as it seems. With a little patience and the right tools, you can diagnose the problem and potentially save yourself a ton of money. Happy wrenching!