Question about 2008 Beta Alp 200

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Rear suspension sqeaks and is stiff with little movement

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Grease the swing arm and spray WD40 on the shocks. Wipe off the excess.

Posted on Jun 17, 2009


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Sqeaking from rear of 2005 fat boy suspension

is the squeaking when u let off the throttle ?? is it more like a chirp instead of a squeak? if so maybe your final drive belt worn or out of adjustment rubbing on your sprocket shroud

Oct 01, 2014 | Harley Davidson Motorcycles

1 Answer

Super stiff suspension

Most likely it is a bent or seized shock absorber - remove and test by hand and replace if necessary. For best practice replace in pairs.

Feb 24, 2018 | 2001 Lexus ES 300

1 Answer

My soft tail rides really stiff on rough roads. What can I do to soften the ride. Seems like the front forks are stiff. Just had shocks serviced.

As far as the rear suspension, a softtail won't ride a smooth as one with a swingarm, as the softtail has less travel.

On the front end, Harley has three different "thicknesses" of fork oil, light, medium, and heavy, which gives different suspension dampening.

If the front forks are too stiff, you could try a lighter fork oil.

Feb 14, 2014 | 2007 Harley Davidson FLSTC Heritage...

1 Answer

What can be done to improve the forks so they are not so stiff for fire roading and light off roading.

First, use the owners manual and check the setting of the compression damping. Set the compression damping a bit lighter and try it out. This will make the forks feel less stiff, but the fork springs could still be too stiff for your weight. Make sure the rear air spring has enough air in it too, this can adversely effect handling.

Next step, Work with a reputable off-road suspension shop to set up the bike for your weight and riding abilities. There is not much you can do with the rear air spring/shock, but I found that it worked quite well.

A couple of good suspension tuning shops are Enduro Engineering, Factory Connection. etc. Most of the good shops will require that you remove the forks and send them in for re-spring or re-valve work.

Ask at your local dealer that sells a lot of motorcross type bikes about good suspension shops in your area.

Nov 03, 2010 | 2007 BMW G 650 Xchallenge

1 Answer

Left rear is sqeaking

Several possibilities, You could have worn out brake pads or a brake pad scratcher telling you it is time. You could have bad wheel bearings. If you back into parking spaces till you bump the curb, you could have broken or bent suspension bushings. Could just be one dry shock absorber. Could be an automatic brake adjuster that is set too tight causing brake pad glazing/squeaking. If it happens when you bounce it is suspension. If it happens when you roll its Brake/bearing.

Sep 10, 2010 | 2000 Mazda MPV

1 Answer

1999 Towncar - Air suspension shocks in good condition and car rides level - no idicator light is on. The car just rides way too stiff. Even the slightest bump jolts the inside (rattles change in ash...

I will check the shop manual, but the module does control ride for stiffness, increased stiffness at higher speeds, etc. If the bags are inflated, then the module cintrols how much air to allow in or out based on inputs to the module. See if you can get one from a salvage yard form a cash for clunkers car.

A dealer can run a test for fault codes in the computer. Call and ask how much for just a scan for fault codes in the air suspension module.

Vehicle Dynamic Suspension The vehicle dynamic suspension consists of the following components:
  • Rear air suspension control (RAS) module (5A919)
  • Snorkel
  • Drier
  • Air compressor (5319)
  • Air suspension switch (5K761)
  • Solenoid valve (5311)
  • Air spring (5560)
  • Air suspension height sensor (5359)
  • Air line
Rear Air Suspension Control Module
A microprocessor controls the air suspension system. The microprocessor and its supporting hardware are contained in the rear air suspension control module. The rear air suspension control module responds to signals from various sensors in the vehicle to maintain the programmed ride height while the vehicle is either moving or stopped. The rear air suspension control module accomplishes this by opening and closing solenoid valves to control the amount of air in the air spring(s). The rear air suspension control module turns on the compressor by applying voltage through the compressor relay to inflate the air spring(s) and raise the vehicle. The rear air suspension control module opens the vent solenoid to lower the vehicle by releasing air from the air spring(s) in response to signal inputs from the air suspension height sensor(s).
Air Suspension Switch
sxg~us~en~file=ani_caut.gif~gen~ref.gif CAUTION: The air suspension switch must be turned to the OFF position when the vehicle is hoisted, jacked, towed, jump started, or raised off the ground, to avoid unnecessary operation of the system and possible damage to the air suspension system components.
The air suspension switch provides a signal to the rear air suspension control module in the ON position to activate the system to maintain the programmed vehicle height.
Air Compressor
NOTE: The compressor contains a thermal overload circuit breaker. The circuit breaker automatically resets after a cool down period and after being tripped by excessive compressor motor heat.
The air compressor assembly consists of the compressor pump, electric motor and vent solenoid (must be installed as an assembly).
Air Suspension Height Sensor
The air suspension height sensor sends signals to the air suspension control module. There are three possible conditions that the air suspension control module interprets from the signals of the air suspension height sensors. The conditions are trim height, below trim height, or above trim height.
Solenoid Valve, Air Spring
sxg~us~en~file=ani_caut.gif~gen~ref.gif WARNING: Never rotate an air spring solenoid valve to the release slot in the air spring end cap fitting until all pressurized air has escaped from the air spring to prevent vehicle damage or personal injury.
The air spring solenoid valve allows air to enter and exit the rear air springs during height adjustment operations. The air spring solenoid valve is electrically operated and controlled by the air suspension control module.
Steering Sensor
The steering sensor provides the steering rate and position to the air suspension control module to avoid overcompensation of the air suspension during turns.
Inspection and Verification
  1. Verify the customer concern.
  1. NOTE: If the door ajar indicator is illuminated, repair the door ajar indicator. For additional information, refer to Section 413-09 .
    Visually inspect for obvious signs of mechanical and electrical damage.

Visual Inspection Chart Mechanical Electrical
  • Restricted suspension movement
  • Excessive vehicle load
  • Cut, severed or crimped air line(s)
  • Incorrectly mounted, damaged or disconnected height sensor
  • Damaged air spring(s)
  • Central junction box (CJB) Fuse:
    • 8 (10A)
    • 17 (10A)
  • Battery junction box (BJB) Fuse 12 (30A)
  • Loose or corroded connectors
  • Air suspension switch
  • Damaged air spring solenoid(s)

  1. If the concern remains after the inspection, connect New Generation STAR (NGS) Tester to the data link connector (DLC) located beneath the instrument panel and select the vehicle to be tested from the NGS Tester menu. If NGS Tester does not communicate with the vehicle:
    • check that the program card is properly installed.
    • check the connections to the vehicle.
    • check the ignition switch position.
  1. If the NGS still does not communicate with the vehicle, refer to the New Generation STAR Tester manual.
  1. Carry out the DATA LINK DIAGNOSTIC TEST. If NGS Tester responds with:
    • CKT914, CKT915 or CKT70 = ALL ECUS NO RESP/NOT EQUIP. Refer to Section 418-00 .
    • NO RESP/NOT EQUIP for rear air suspension control module, go to Pinpoint Test A.
    • SYSTEM PASSED, retrieve and record the continuous diagnostic trouble codes (DTCs), erase the continuous DTCs and perform self-test diagnostics for the rear air suspension control module.
  1. If the DTCs retrieved are related to the concern, go to Rear Air Suspension Control Module Diagnostic Trouble Code (DTC) Index to continue diagnostics.
  1. If no DTCs related to the concern are retrieved, proceed to Symptom Chart to continue diagnostics.
Rear Air Suspension Control Module Diagnostic Trouble Code (DTC) Index
NOTE: If rear air suspension control module C251 is disconnected before rear air suspension control module C250, DTCs C1830, C1770, C1790 and C1795 will be retrieved and must be cleared before an accurate list of continuous DTCs can be retrieved. The DTCs C1441 and C1442 will only be retrieved when running the electronic variable orifice (EVO) functional test on NGS Tester. The DTC C1897 will only be retrieved once per ignition switch cycle.

Module —Air Suspension Control Removal
sxg~us~en~file=ani_caut.gif~gen~ref.gif WARNING: Before performing maintenance on any air suspension components, disconnect the power to the system by turning off the air suspension switch located on the LH side of the luggage compartment to prevent vehicle damage or personal injury.
sxg~us~en~file=ani_caut.gif~gen~ref.gif CAUTION: Electronic modules are sensitive to static electrical charges. If exposed to these charges, damage may result.
  1. Turn the air suspension switch off.
  1. Disconnect the battery ground cable (14301).
  1. Pull out the lower instrument panel insulator.
    1. Remove the pushpins.
    1. Pull out the lower instrument panel insulator.
  1. Remove the lower instrument panel insulator.
    1. Disconnect the power point.
    1. Disconnect the courtesy lamp.
    1. Remove the lower instrument panel insulator.
  1. Remove the rear air suspension control module.
    1. Remove the screws.
    1. Disconnect the electrical connectors.
    1. Remove the rear air suspension control module.
  1. NOTE: When the battery is disconnected and reconnected, some abnormal drive symptoms may occur while the vehicle relearns its adaptive strategy. The vehicle may need to be driven 16 km (10 mi) or more to relearn the strategy.
    To install, reverse the removal procedure.

Jan 20, 2010 | Lincoln Town Car Cars & Trucks

1 Answer

Sqeaking and noise in rear nearside suspension on bumpy roads

the most common cause of this is worn out rubber suspension bushings, have them checked.

Aug 14, 2009 | 2000 Volvo V40

1 Answer

The rear shock on my 1999 cr 250 dosn't compress, and fells stiff. I checked the bolts, and they seem to be free. What can cause the rear suspension to have a stiff rebound, and short travel? The...

That's not a cheap shock to buy but i'm afraid it's blown or bent. Bike is 7 years old..I think it's time for a quality shock like a Fox or comparable..............Good luck to you friend.....Tim

May 03, 2009 | 2002 Honda CR 250 R

2 Answers

2004 yamaha 250 yz .. is extreamly bouncy


Replace the suspensions, buy new ones. I know that the old ones can be repaired, but its expensive and you never know how long they live.

New suspensions arent expensive to buy

Good luck

Apr 01, 2009 | 2004 Yamaha YZ 250

1 Answer

2000 BMW 7 Series Model 728i

When the car is stationary. Push down on the back (Boot or TRunk) as hard as you can a few times & listen for the squeek. It's more common in the rear suspension from my experience. It sounds like the bushings are gone or worn at the top of the suspension struts.
That's if it does squeek. You might not need your suspension replaced just the bushings as they are normally plastic.
Try doing the same by pushing down at the front of the car also as it maybe happening there too.

Dec 15, 2008 | 2000 BMW 7 Series

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