ERR4352 | Fuel Injection Stepper Motor - V8 | Defender, Discovery 1, Range Rover P38
To check the stock of Genuine Parts before placing an order please use our Contact Us page
To check the stock of Genuine Parts before placing an order please use our Contact Us page
To check the stock of Genuine Parts before placing an order please use our Contact Us page
To check the stock of Genuine Parts before placing an order please use our Contact Us page
To check the stock of Genuine Parts before placing an order please use our Contact Us page
Land Rover Part Number: ERR4352 - Multi-Point Fuel Injection Stepper Motor
ERR4352 is a multi-point fuel injection stepper motor fitted to the plenum chamber of Rover V8 engines. The unit meters bypass air around the throttle in measured steps under commands from the engine management unit to regulate idle speed and steady the engine when loads change; on Discovery 1 models the same unit functions as the idle air control valve. Failure or sticking of the stepper can produce an unstable idle, low-speed surging or stalling when stationary. Replacement requires removal of the plenum/throttle area and disconnection of the electrical connector - refer to workshop guidance for correct handling and reassembly.
Use the compatibility data below to confirm fitment against your V.I.N.
Compatibility
- Defender (1987-2006) - 4.0L V8 EFI Petrol
- Discovery 1 (1989-1998) - 3.9/4.0 V8 Petrol EFI (From VIN FA393361 to WA799999)
- Range Rover P38 (1994-2001) - 4.0L and 4.6L V8 EFI Petrol
Frequently Asked Questions
The ERR4352 stepper motor controls a small bypass passage in the intake plenum to fine-tune low-speed airflow for multi-point EFI on Rover V8 engines. It moves in discrete steps under ECU command to maintain a steady idle and to compensate for accessory or gear-engagement loads; on Discovery 1 it performs idle air control. When the unit sticks or fails it commonly causes unstable idle, surging at low revs or stalling-replacement requires removing the plenum and disconnecting the electrical connector, so follow workshop procedures.
| Model | Variant |
|---|---|
| Land Rover Defender (1987-2006) | 4.0L V8 EFI Petrol |
| Land Rover Discovery 1 (1989-1998) | 3.9/4.0 V8 Petrol EFI (From VIN FA393361 to WA799999) |
| Land Rover Range Rover P38 (1994-2001) | 4.0L V8 EFI Petrol |
| Land Rover Range Rover P38 (1994-2001) | 4.6L V8 EFI Petrol |
If you are unsure of compatibility with your vehicle, you can also confirm by checking against your V.I.N. Simply reach out to us with your V.I.N and desired part number via our Contact page or use our Finding Part Numbers page.
Replace ERR4352 when it exhibits failure symptoms such as an unstable idle, low-speed surging or stalling, or when diagnostics confirm the stepper motor is not responding correctly; inspect the unit when performing engine diagnostics for idle faults.
- C8 products are usually supplied by Britpart.
- L8 products are genuine Land Rover parts.
- Z8 products are normally supplied by Allmakes.
All products and accessories available on LRDirect.com come with a 2-year warranty.