Workshop Manuals Factory service & repair Rover
Rover 400 Workshop Manual (1995-2000)11 · Engine management system - PGMFi
11 · Engine

Engine management system - PGMFi (Engine tuning): Adjustments

Make
Rover
Model
400 Workshop Manual
Year
1995–2000
Section
Adjustments › Engine tuning
Engine management system - PGMFiEngine tuning

ENGINE TUNING

Service repair no - 19.22.13

Adjust

  1. Connect a suitable tachometer.
  2. Connect an exhaust extractor.
  3. Start engine and run until cooling fan has switched on. Switch off engine.
Engine tuning – Start engine and run until cooling fan has switched on. Switch off engine.
  1. Disconnect the 2 pin multiplug from the idle air control valve.
  2. Start the engine with the accelerator pedal slightly depressed. Stabilize engine speed at 1000 rev/min then slowly release the pedal until the engine idles.
  3. Check idle speed with no electrical components switched on. Idle speed should be 550 æ 50 rev/min.
Engine tuning – Check idle speed with no electrical components switched on. Idle speed should be 550 æ 50
  1. Adjust idle speed if necessary, by turning the idle adjusting screw.

NOTE: After adjusting the idle speed, check the ignition timing and adjust if necessary. See this section.

  1. Switch off engine and connect multiplug to idle air control valve, then remove BACK UP (7.5 A) fuse in the engine compartment fuse box for 10 seconds to reset the ECM.
  2. Start engine let it idle for one minute, then check the idle speed. Idle speed should be 750 æ 50 rev/min.
  3. Switch off engine and disconnect tachometer.

Parts & tools for this job For 1995 Rover 400

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