My 2000 Jeep Grand Cherokee 4.0l Wont Shift Out of 1st Gear UPDATED

My 2000 Jeep Grand Cherokee 4.0l Wont Shift Out of 1st Gear

The same symptoms can also indicate a  serious transmission problem such as a faulty valve trunk, work, clutches, and faulty torque converter.

This guide goes over common issues and step-by-step instructions to help y'all troubleshoot Jeep manual issues such as limp mode, no shifting, delayed shifting, and slipping on Jeep Wrangler, Thou Renegade, Compass, Gladiator, Cherokee.

Possible Causes

Common bug that oftentimes cause Jeep transmission problems:

• Depression transmission fluid level - Low transmission fluid level can cause several issues, including erratic shifting, no shifting at all, delayed shiting, strange grinding noises, limp mode, and even check engine low-cal to come on.
• Faulty Torque Converter - Can cause Jeep transmission to slip in all gears, shuddering, and fifty-fifty overheating.
• Worn Bands -  Tin cause delayed shifting, shifting at loftier RPM, harsh shifting, no gear at all, no contrary.
• Shifter Module - A faulty shifter module or shifter cable can cause the transmission to get stuck or non go in the selected gear.
• Defective Valve Body - The valve body is very circuitous and tin can fail in several ways. Depending on the competent that fails, it tin cause limp manner. The transmission may not shift at all or harsh shifts between gear or specific gear.
• Faulty Vehicle Speed Sensor  - If your Jeep has developed a harsh shift or is stuck in emergency mode (limp mode), the vehicle speed sensor (VSS) may be the problem. Sigan from the VSS is sent to the Powertrain Control Module (PCM), and the last point can crusade one or more of the previous systems.
• Brake Lite Switch - A faulty brake calorie-free switch tin prevent the shifter from moving out or back in Park.
• Low Battery Voltage - In rare cases, the low battery voltage can trigger the automatic transmission to get stuck in limp mode.
• PCM / TCU / ECU Software Issue - Software issues can cause erratic shifting or downshifting bug. Transmission may shift too late or gears to drop unexpectedly. This is a common problem for your particular transmission; a Jeep dealer may have a software update to fix such shifting problems.
• Wire harness - Damages wire harnesses from ECU / PCM to the transmission housing can cause shifting bug. For example, you may non shift at all or become in gear.

Near Common Jeep Manual Problems

Based on our enquiry and experience with Jeep vehicles, hither is a list of the most common problems with Jeep transmission and possible causes.

Delayed or failed gear shifts

Older Jeep vehicles that utilise a 42RE or 42RLE 4-speed automatic transmission have a widespread effect with delayed or failed gear shifts. In that location are ii dissimilar scenarios when this happens. One is when shifting through 1st to 3rd gear, and the other is shifting from 3th to quaternary gear. In almost cases, in that location volition be no check engine light or other symptoms.

Possible causes

• Worn or stuck governor pressure solenoid, preventing it from maintaining proper fluid force per unit area. This volition touch on 1st-third gear shifts. A faulty sensor or wiring issue will cause wrong readings on the solenoid position.
• Worn overdrive solenoid, which serves as a pressure accumulator that engages the overdrive gear. This will affect the quaternary (overdrive) gear only. When this solenoid wears out, it cannot hold the transmission fluid pressure needed for proper performance.
• Other possible causes include low manual fluid level or dingy manual filter.

Torque converter or overdrive bug

Jeep, with a 42RE or 42RLE 4-speed automatic transmission made later 2000, tin accept desultory torque converter clutch or overdrive appointment bug. Usually, this outcome will trigger a 'check engine' warning light so that a corresponding code volition be stored in ECU memory.

Possible causes

• A broken encompass plate holds the pressure level boost valve in place on the bottom side of the valve body. This is a well-known problem, which is a result of poor pattern from the factory. Equally a outcome, the retaining bracket that holds the lockup pump breaks off. This triggers a P1740 lawmaking. Installing a special upgrade kit from Superior Solution is the best solution.
• Faulty input/output speed sensors on the gearbox or faulty throttle position sensor. If any of them are giving the incorrect reading, it can impact torque converter clutch functioning. These issues will normally trigger various speed sensor-related codes.
• Faulty governor pressure solenoid or the respective sensor, as already described.

Delayed or failed gear engagement

Jeeps that apply a 545RFE five-speed automatic manual tin can develop a problem with gear engagement. This affects both drive and reverse gears and shows a noticeable delay with gear engagement when the vehicle is cold. The trouble volition be more than apparent when outside temperatures are shallow. The check engine light may also come up on.

Possible crusade

• Loose or disconnected transmission libation filter. This allows the manual fluid to bleed from the torque converter when the vehicle is turned off for some time; it will delay gear engagement until the pressure builds upward. Installing a modified filter solves the issue.
• Dirty transmission fluid and filter, low fluid level, or improper transmission fluid

Delayed gear shifts or limp-dwelling mode

Jeep vehicles with a Mercedes sourced 722.half dozen 5-speed automated transmissions tin can suffer from problems that range from harsh and delayed gear shifts to gear slippage or fifty-fifty going into limp-home mode. In most cases, these symptoms will exist intermittent and trigger a bank check engine light to store a corresponding fault code.

Possible causes

• Faulty usher plate, which holds the solenoids and connects them to the TCU. When the conductor plate is faulty, it causes communication bug, which results in improper solenoid operation. This is a well-known problem, and there are numerous aftermarket solutions.

• Worn or faulty valve trunk solenoid. Sometimes, the problem tin can exist due to impairment to the internal wiring.

Erratic gear shifts or gear slipping.

Front-wheel drive Jeeps with an A6MF1 6-speed automated transmission tin develop bug with wrong gear changes. Shifts can be erratic, or in that location can even exist a slippage during gear shifts. In most cases, the symptoms will be more noticeable when cold. In that location might be a check engine light and corresponding codes in DTC retention.

Possible causes

• Leaking or sticking solenoids that appoint each gear. This is a gradual process, which starts only when cold and gets worse with time. Replacing the whole solenoid set with new or upgraded ones is the only solution.
• Faulty or damaged solenoid wiring, which obstructs signals from the TCU. Checking and repairing or replacing the wiring will solve the consequence.

Intermittent shifts to neutral

Front end-wheel bulldoze Jeeps with a ZF9HP48 9-speed automatic transmission can unexpectedly shift to neutral while driving. This issue is intermittent in near cases, and there will be no apparent correlation to driving atmospheric condition or overheating. This problem volition trigger a check engine light, and a corresponding DTC code will be stored in the Engine Control Unit (ECU).

Possible crusade

• Faulty transaxle range sensor connector and wiring, which causes wrong signals from the sensor. When the TCU detects an implausible signal, it shifts the transmission to neutral and sets the P0901 code. Equally this is a well-known trouble and a serious condom issue, a Service Message covers it. Check if your vehicle is affected.

Troubleshooting Jeep Transmission Problems

Follow the steps to troubleshoot and isolate Jeep transmission problems. Information technology is critical to determine which transmission is installed on your Jeep to inquiry the issues that affect that particular transmission. You can verify the transfer by Decoding your VIN or calling the dealer.

To help yous go started, here is a listing of Jeep transmissions:

• three-Spd Automatic A999: 1986-1991
• 3-Spd Automatic 30RH (A904): 1994-1995
• 3-Spd Automatic 30RH (A904): 1994-1995, 1997-2006
• iv-Spd Automatic 42RLE: 2003-2006, 2007-2011
• 5-Spd Automatic W5A580: 2012-2017
  • This is manufactured by Mercedes-Benz and is known as the 722.6 transmissions. It is a reliable transmission only known to have a few minor problems. For more assistance, see our commodity on Mercedes-Benz 722.half-dozen transmission bug.

The next step is to check the transmission fluid level. Low transmission fluid level is one of the most mutual bug that cause shifting bug on Jeep Wrangler, Gand Cherokee, Renegade, Compass, Gladiator, and Cherokee.

How to Check Jeep Manual Fluid Level

This process should only be performed to check the manual fluid that may be slightly low. If the transmission fluid is extremely low, you need to add together fluid then check the level. Checking the manual fluid level on a manual that has no fluid tin can damage the transmission.

1. Park the vehicle on level ground when possible.
2. Set the parking brakes and shifter in Park.
3. Pull the hood release and open the hood.
4. Locate the manual dipstick.
5. Remove the dipstick and clean it with a clean textile.
6. Reinsert the dipstick in the transmission. Ensure the transmission is fully inserted, then remove information technology.
7. Look carefully at the dipstick to determine the current transmission fluid level. The level should exist betwixt MIN and MAX marks for the Cold (lower) markings.
8. If the level is low, add transmission fluid level.
9. Drive vehicle for fifteen minutes making sure to select all the gears manually.
10. Repeat the procedure in one case the transmission warm-upward, but this time, the level must be between the MIN and MAX marks for the HOD (higher) markings.

Not all Jeep vehicles have a transmission dipstick. If the dipstick is not present, the vehicle will demand to be raised on a lift, and the level tin can be checked via the fill hole.

Reset Automatic Transmission Adaptation

Adaptive automated transmission monitors your driving behavior and adjusts the gear shits to deliver the driver's all-time engine response and shift points.

If y'all have a newer Jeep, there is a loftier chance it monitors your driving beliefs. Resetting the transmission adaptation to the factory setting can make your Jeep shift normal again. This unproblematic procedure tin improve shifting and does not cause agin effects.

This procedure will piece of work on W5A580 transmission but may work on other models likewise. It does non cause any bug and doesn't injure to try.

Here is how to reset Jeep transmission without whatsoever tools:

1. Printing the gas pedal downwardly and proceed it pressed.
2. Plow ignition on without starting the engine.
3. Keep ignition on (engine off), and the gas pedal pressed for thirty seconds.
4. Turn the ignition off.
5. Release the gas pedal.

Start the engine, and don't bulldoze too aggressively for the adjacent 20 miles. If the procedure above does non improve the shift quality, y'all can perform a manual adaption reset with a professional person scanner.

Read Transmission Fault Codes

If the transmission fluid level is right, the adjacent stride is to read error codes from the transmission control module or what is known as the TCU. To retrieve transmission codes, you will need a Jeep OBD-II Scanner. Basic code readers are non recommended because they can just read codes from the Engine Control Unit and not Transmission Control Unit of measurement.

1. Park the vehicle and turn off the ignition—set parking brakes.
2. Locate diagnostic port under the dashboard, commuter's side.
3. Plugin your OBD-Two scanner, and so turn on the ignition without starting the engine.
4. The scanner volition turn on. Allow it to communicate with the vehicle. Select MAKINA; so, your item model.
5. Select Control Units, then Transmission.
6. Select Read Fault Codes from the main menu.

Check For Recalls

Lastly, always check if whatsoever open up recalls or Technical Service Bulletin (TSB) exist for your Jeep.

Recalls are performed free of charge past any Jeep dealer. To bank check if a recall exists on your vehicle, visit our Cheque Recalls page.

Ask if Technical Service Bulletins (TSB) exist for your automobile as well. TSBs for the transmission typically update the Engine or Transmsimon command unit software. TSBs can program the shift solenoids, which makes the transmission shift better.

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My 2000 Jeep Grand Cherokee 4.0l Wont Shift Out of 1st Gear UPDATED

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