04891423AB OEM Sebring Avenger For Neon 1998-1999 Leak Detection Pump
Product Description
 

PUMP LEAK DETECTION MODULE | HYDRAULIC SYSTEM INTEGRITY MONITOR (4891423AB)

OEM Fluid Management Component – Critical Hydraulic System Safeguard
Part Number: 4891423AB ( Parts Specification)
⚙️ Function: Power Steering Pump Leak Detection Sensor
Condition: New | Factory-Sealed | Pre-Calibrated | Emission-Compliant

Engineering Purpose & Critical Function:
This HYDRAULIC LEAK DETECTION MODULE is a factory-engineered safety component for Chrysler's hydraulic power steering systems. It actively monitors:
• Real-time fluid pressure differentials in power steering circuits (operational range: 55-850 PSI)
• Micro-leakage rates as low as 0.8 mL/min before visible fluid loss occurs
• Temperature-compensated fluid viscosity changes during cold starts (-30°C to +120°C)
• Critical for triggering "SERVICE STEERING" warnings 47% faster than conventional pressure switches
• Prevents catastrophic pump seizure by disabling high-load operation during 25%+ fluid loss

Technical Specifications:

  • Primary OEM Number: 4891423AB ( Parts specification)
  • Physical Dimensions: 7.3" x 5.2" x 5.2" (185mm x 132mm x 132mm)
  • Weight: 1.30 lbs (0.59 kg) – includes integrated mounting bracket
  • Electrical Interface: 3-pin Deutsch connector (12V nominal, 0.3A max draw)
  • Detection Threshold: 15% pressure drop in 0.8 seconds OR 30% fluid volume loss
  • Response Time: 120ms signal transmission to PCM (vs. 450ms for aftermarket units)
  • Fluid Compatibility: ATF+4, ® ATF, and ZF Lifeguard 6 hydraulic fluids
  • Vibration Rating: MIL-STD-810G certified (5-500Hz continuous exposure)
  • Service Life: 150,000 miles or until first major steering system service
Performance & Safety Advantages:
  • Early Failure Detection: Identifies micro-cracks in steering pump housings before external leakage
  • System Protection: Automatically reduces engine load during critical fluid loss (prevents pump seizure)
  • DTC Precision: Generates specific P0551 (Power Steering Pressure) codes with failure magnitude data
  • Environmental Compliance: Meets CA Prop 65 requirements for fluid containment systems
  • Sealing Integrity: Laser-welded housing with Viton® O-rings (resists ATF+4 degradation)

Vehicle Compatibility Matrix:

PRECISION ENGINEERED FOR CHRYSLER PLATFORMS:
  • Chrysler Prowler: 2001-2002 models (3.5L SOHC V6 – hydraulic steering only)
  • Dodge Ram Van (B-Series): 2001-2003 models with:
      – 3.9L TBI V6 (RWD)
      – 5.2L Magnum V8 (RWD)
      – 5.9L Magnum V8 (RWD)
  • Dodge Ram Wagon: 2001-2002 models (all 3.9L/5.2L/5.9L variants)
  • ⚠️ NOT COMPATIBLE WITH: 2003+ Ram Trucks (switched to electric steering), Sprinter Vans, or Neons
  • CRITICAL NOTE: Only for vehicles with hydraulic (not electric) power steering systems
⚠️ CRITICAL INSTALLATION WARNINGS:
Fluid Contamination: Must replace power steering fluid (ATF+4) when installing new module
Connector Polarity: Reversed wiring causes permanent PCM communication failure (pin 1 = signal)
Mounting Torque: 89 in-lbs MAX on bracket bolts (overtightening cracks sensor housing)
System Bleeding: Requires 15-minute fluid circulation cycle post-installation to calibrate
Diagnostic Reset: Must clear stored codes with DRB-III scan tool before road testing

Failure Diagnosis Protocol:

  • DTC Indicators: P0551 (low pressure), U0155 (lost communication with module)
  • ⚠️ Driving Symptoms: "SERVICE STEERING" light without visible fluid loss, inconsistent assist at low speeds
  • Voltage Test: Measure 4.7-5.3V at connector pin 1 (ignition ON, engine OFF)
  • Pressure Correlation: Compare with mechanical gauge reading (deviation >7% = faulty sensor)
  • Fluid Check: Milky fluid indicates internal seal failure (requires full system flush)
  • ⚠️ Common Misdiagnosis: Confused with failing pressure relief valve – verify with live data stream
Professional Service Notes:
  • Always replace O-ring with 04888129AB (fluid exposure degrades reused seals)
  • ️ Install only after complete system cool-down (hot fluid causes false leak detection)
  • Post-installation procedure: Cycle steering lock-to-lock 10x with engine running
  • ⚖️ Never bench-test with air pressure – requires hydraulic fluid for proper calibration
  • Required service step: Program module via STARSCAN with vehicle-specific VIN data
PACKAGE CONTENTS
1 × Pump Leak Detection Module (4891423AB)
1 × Pre-lubricated Viton® O-ring ( 04888129AB)
Power steering fluid NOT included – must use ATF+4 specification fluid

Disclaimer: "" and "Chrysler" are trademarks of Stellantis N.V. This component meets Stellantis engineering specifications for listed applications. Prop 65 warning applies due to potential exposure to Di(2-ethylhexyl) phthalate (DEHP) in fluid seals. California residents: www.P65Warnings.ca.gov. Module must be programmed to vehicle VIN – non-programmed units will trigger persistent warning lights. Not serviceable; replace entire assembly if contaminated. Always verify hydraulic steering system compatibility before installation.

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We will process the order within 1-2 working days after payment is clear.
--- For US warehouse delivery, it usually takes 3-7 days of delivery time.
Please review the customization and eBay policies in your city area for more information.
Our 30-day Satisfaction Guarantee assures our customers that they will receive all orders promptly and exactly as described. In addition, it allows customers to return new and unused products in their original factory condition for any reason within 30 days from the date of purchase.
1. All returns must be contact us and have a return. Unauthorized returns will not be accepted.
2. Buyers are responsible for appropriate packing, returning shipping cost, insurance and returning the item in "new" condition. Used items will not be accepted for return.
3. We will replace the returning item with an identical item, issue a full store credit or a full refund.
Our working time: Monday to Saturday, 9:00~18:30.
For inquires and customer support, please send your email via ebay email system.
All emails will be responded to within 24 hours during business days.
We sincerely hope you can give us ALL-5 STAR feedback after your purchase, and hope you have good days with our products.
If you have problems with our products, please don't open request or leave negative feedback before communication, you can feel free to contact us first, we will definitely try our best to help you. Hope for best understanding.
  • We sincerely hope you can give us ALL-5 STAR feedback after your purchase, and hope you have good days with our products.
    If you have problems with our products, please don't open request or leave negative feedback before communication, you can feel free to contact us first, we will definitely try our best to help you. Hope for best understanding.
  • We accept PayPal via eBay Secure Check-Out only.
    Payment is expected within 7 days of auction close. Unpaid Items will be forfeited per eBay.
    Immediate payment needs to be processed for items with Add to Cart option so that any promotional discounts can be applied to your order immediately.
  • Notice:
    1 .We do everything we can to ship your orders out as soon as possible.
    2. Transportation and handling:
    We will process the order within 1-2 working days after payment is clear.
    --- For US warehouse delivery, it usually takes 3-7 days of delivery time.
    Please review the customization and eBay policies in your city area for more information.
  • Our 30-day Satisfaction Guarantee assures our customers that they will receive all orders promptly and exactly as described. In addition, it allows customers to return new and unused products in their original factory condition for any reason within 30 days from the date of purchase.
    1. All returns must be contact us and have a return. Unauthorized returns will not be accepted.
    2. Buyers are responsible for appropriate packing, returning shipping cost, insurance and returning the item in "new" condition. Used items will not be accepted for return.
    3. We will replace the returning item with an identical item, issue a full store credit or a full refund.
  • Our working time: Monday to Saturday, 9:00~18:30.
    For inquires and customer support, please send your email via ebay email system.
    All emails will be responded to within 24 hours during business days.