Acura RL. Instruction — page 365

VACUUM PUMP — DIESEL TROUBLE SHOOTING

VACUUM PUMP (DIESEL) TROUBLE SHOOTING CHART

Incorrect ignition timing

Reset ignition timing see

ENGINE PERFORMANCE

Distributor centrifugal or vacuum advance malfunction

Check operation and replace

as necessary

Carburetor setting too lean

Readjust mixture setting, see

ENGINE PERFORMANCE

Vacuum leak

Eliminate vacuum leak

EGR valve malfunction

Replace EGR valve

Poor Gasoline Mileage

Cracked or broken vacuum

Replace vacuum hoses hoses

Vacuum leaks

Repair vacuum leaks

Defective ignition wires

Replace wires

Incorrect choke setting

Readjust setting, see ENGINE

PERFORMANCE

Defective vacuum advance

Replace vacuum advance

Defective spark plugs

Replace spark plugs

Binding carburetor power piston

Eliminate binding

Dirt in carburetor jets

Clean and/or replace jets

Incorrect float adjustment

Readjust float setting, see

FUEL

Defective power valve

Replace power valve, see

ENGINE PERFORMANCE

Incorrect idle speed

Readjust idle speed

Engine Stalls

Improper float level

Readjust float level

Leaking needle valve and seat

Replace needle valve and seat

Vacuum leaks

Eliminate vacuum leaks

NOTE:

This is GENERAL information. This article is not intended to be specific to
any unique situation or individual vehicle configuration. The purpose of this
Trouble Shooting information is to provide a list of common causes to
problem symptoms. For model-specific Trouble Shooting, refer to SUBJECT,
DIAGNOSTIC, or TESTING articles available in the section(s) you are
accessing.

NOTE:

Diesel engines mechanical diagnosis is the same as gasoline engines for
items such as noisy valves, bearings, pistons, etc. The following trouble
shooting covers only items pertaining to diesel engines.

CONDITION & POSSIBLE CAUSE

CORRECTION

Excessive Noise

Loose pump-to-drive assembly screws

Tighten screws

Loose tube on pump assembly

Tighten tube

2007 Acura RL

GENERAL INFORMATION Trouble Shooting — Basic Procedures

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Friday, June 05, 2009 2:26:48 PM

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© 2005 Mitchell Repair Information Company, LLC.

MANUAL TRANSMISSION

MANUAL TRANSMISSION TROUBLE SHOOTING

MANUAL TRANSMISSION/TRANSAXLE TROUBLE SHOOTING

Valves not functioning properly

Replace valves

Oil Leakage

Loose end plug

Tighten end plug

Bad seal crimp

Remove and re-crimp

seal

NOTE:

This is GENERAL information. This article is not intended to be specific to
any unique situation or individual vehicle configuration. The purpose of this
Trouble Shooting information is to provide a list of common causes to
problem symptoms. For model-specific Trouble Shooting, refer to SUBJECT,
DIAGNOSTIC, or TESTING articles available in the section(s) you are
accessing.

Condition

Possible Cause

Noisy In Forward Gears

Low gear oil level, Loose bell housing bolts, Worn

bearings or gears

Clunk On Deceleration (FWD Only)

Loose engine mounts, Worn inboard CV joints,

Worn differential pinion shaft, Side gear hub

counterbore in case worn oversize

Gear Clash When Shifting Forward Gears

Clutch Out Of Adjustment, Shift linkage damaged

or out of adjustment, Gears or synchronizers

damaged, Low gear oil level

Transmission Noisy When Moving (RWD Only)
Quiet In Neutral With Clutch Engaged

Worn rear outputshaft bearing

Gear Rattle

Worn bearings, Wrong gear oil, Low gear oil,

Worn gears

Steady Ticking At Idle (Increases With RPM)

Broken tooth on gear

Gear Clash When Shifting Forward Gears

Worn or broken synchronizers

Loud Whine In Reverse

Normal condition

(1)

Noise When Stepping On Clutch

Bad release bearing, Worn pilot bearing

Ticking Or Screeching As Clutch Is Engaged

Faulty release bearing, Uneven pressure plate

fingers

Click Or Snap When Clutch Is Engaged

Worn clutch fork, Worn or broken front bearing

retainer

Transmission Shifts Hard

Clutch not releasing, Shift mechanism binding,

Clutch installed backwards

Will Not Shift Into One Gear, Shifts Into All
Others

Bent shift fork, Worn detent balls

Locked Into Gear, Cannot Shift

Clutch adjustment, Worn detent balls

Transmission Jumps Out Of Gear

Pilot bearing worn, Bent shift fork, Worn gear

teeth or face, Excessive gear train end play, Worn

synchronizers, Missing detent ball spring, Shift

2007 Acura RL

GENERAL INFORMATION Trouble Shooting — Basic Procedures

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Friday, June 05, 2009 2:26:48 PM

Page 40

© 2005 Mitchell Repair Information Company, LLC.

POWERTRAIN

CLUTCH TROUBLE SHOOTING

BASIC CLUTCH TROUBLE SHOOTING CHART

mechanism worn or out of adjustment, Engine or

transmission mount bolts loose or out of

adjustment, Transmission not aligned

Shift Lever Rattle

Worn shift lever or detents, Worn shift forks,

Worn synchronizers sleeve

Shift Lever Hops Under Acceleration

Worn engine or transmission mounts

(1)

Most units use spur cut gears in reverse and are noisy

NOTE:

This is GENERAL information. This article is not intended to be specific to
any unique situation or individual vehicle configuration. The purpose of this
Trouble Shooting information is to provide a list of common causes to
problem symptoms. For model-specific Trouble Shooting, refer to SUBJECT,
DIAGNOSTIC, or TESTING articles available in the section(s) you are
accessing.

CONDITION & POSSIBLE CAUSE

CORRECTION

Chattering or Grabbing

Incorrect clutch adjustment

Adjust clutch

Oil, grease or glaze on facings

Disassemble and clean or replace

Loose «U» joint flange

See DRIVE AXLES article

Worn input shaft spline

Replace input shaft

Binding pressure plate

Replace pressure plate

Binding release lever

See CLUTCH article

Binding clutch disc hub

Replace clutch disc

Unequal pressure plate contact

Replace worn/misaligned

components

Loose/bent clutch disc

Replace clutch disc

Incorrect transmission alignment

Realign transmission

Worn pressure plate, disc or flywheel

Replace damaged components

Broken or weak pressure springs

Replace pressure plate

Sticking clutch pedal

Lubricate clutch pedal & linkage

Incorrect clutch disc facing

Replace clutch disc

Engine loose in chassis

Tighten all mounting bolts

Failure to Release

Oil or grease on clutch facings

Clean or replace clutch clutch

disc

Incorrect release lever or pedal adjustment

See CLUTCH article

Worn or broken clutch facings

Replace clutch disc

Bent clutch disc or pressure plate

Replace damaged components

Clutch disc hub binding on input shaft

Clean or replace clutch disc

2007 Acura RL

GENERAL INFORMATION Trouble Shooting — Basic Procedures

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Friday, June 05, 2009 2:26:48 PM

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© 2005 Mitchell Repair Information Company, LLC.

and/or input shaft

Binding pilot bearing

Replace pilot bearing

Sticking release bearing sleeve

Replace release bearing and/or

sleeve

Binding clutch cable

See CLUTCH article

Defective clutch master

Replace master cylinder

Defective clutch slave

Replace slave cylinder

Air in hydraulic system

Bleed hydraulic system

Rattling

Weak or broken release lever spring

Replace spring and check

alignment

Damaged pressure plate

Replace pressure plate

Broken clutch return spring

Replace return spring

Worn splines on clutch disc or input shaft

Replace clutch disc and/or input

shaft

Worn clutch release bearing

Replace release bearing

Dry or worn pilot bearing

Lubricate or replace pilot bearing

Unequal release lever contact

Align or replace release lever

Incorrect pedal free play

Adjust free play

Warped or damaged clutch disc

Replace damaged components

Slipping

Pressure springs worn or

Release pressure plate

Oily, greasy or worn facings

Clean or replace clutch disc

Incorrect clutch alignment

Realign clutch assembly

Warped clutch disc or pressure plate

Replace damaged components

Binding release levers or clutch pedal

Lubricate and/or replace release

components

Squeaking

Worn or damaged release

Replace release bearing

Dry or worn pilot or release bearing

Lubricate or replace assembly

Pilot bearing turning in crankshaft

Replace pilot bearing and/or

crankshaft

Worn input shaft bearing

Replace bearing and seal

Incorrect transmission alignment

Realign transmission

Dry release fork between pivot

Lubricate release fork and pivot

Heavy and/or Stiff Pedal

Sticking release bearing sleeve

Replace release bearing and/or

sleeve

Dry or binding clutch pedal hub

Lubricate and align components

Floor mat interference with pedal

Lay mat flat in proper area

Dry or binding ball/fork pivots

Lubricate and align components

Faulty clutch cable

Replace clutch cable

Noisy Clutch Pedal

Faulty interlock switch

Replace interlock switch

Self-adjuster ratchet noise

Lubricate or replace self-adjuster

2007 Acura RL

GENERAL INFORMATION Trouble Shooting — Basic Procedures

me

Friday, June 05, 2009 2:26:48 PM

Page 42

© 2005 Mitchell Repair Information Company, LLC.

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