Engine power fluctuates during acceleration

ENGINE POWER FLUCTUATES DURING ACCELERATION

Model

Discovery Series II

Affected vehicles

All Td5 diesel derivatives with air conditioning in VIN ranges: XA 900012 to XA 907212 XA 200412 to YA 277020

Date

2000-07-05

Reference

Bulletin 0023, CDS ref L8600bu

Bulletin text

Discovery Series II

AFFECTED RANGE:

All Td5 diesel derivatives with air conditioning in VIN ranges: XA 900012 to XA 907212 XA 200412 to YA 277020

PROBLEM:

ENGINE POWER FLUCTUATES DURING ACCELERATION The customer may report any or all of the following problems: Erratic engine performance under load, i.e. conditions where turbocharger would normally be producing boost. Erratic performance from air conditioning system (A/C), i.e. air in cabin intermittently not being cooled on demand. ‘Check engine’ light (MIL) illuminated.

CAUSE:

Damage to the engine harness to turbocharger boost control solenoid and/or the A/C compressor wiring due to chafing on the A/C compressor pipe connector block.

ACTION:

Where a complaint vehicle exhibits symptoms similar to those described above, inspect the boost control harness in the area of the A/C compressor connector block. Where damage is confirmed, repair the harness as necessary. If damage is confined to • the insulation, (no damage to bare wires) repair by individually taping the damaged sections of wire. If damage extends to the • wire core, replace the damaged section using wire of the same gauge as the original, with joints protected by insulating sleeves.

Bulletin N o : 0023 L8600bu 1 05.07.2000

On completion of the repair, protect the area with split convoluted plastic • conduit to ensure that the problem does not recur. Prior to reconnecting the harness, reroute behind the A/C compressor pipe • connector block and beneath both A/C pipes, as shown arrowed in the illustration. Ensure that the harness does not come into contact with the connector block or pipes.

PARTS INFORMATION:

Locally sourced repair materials.

WARRANTY CLAIMS: Use Complaint Code: 7G0K

Use S.R.O.: 86.70.89.62 Time allowance: 0.20Hrs