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Starter motor overrun on convenient start system

When the car is started the starter dosnt cut out when engine fires up.

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  • Tom Wilson
    Tom Wilson Mar 22, 2014

    this is on a bmw 535i 2001

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Look for a bad ground

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2 Answers

It's taking to long for my 1988 300zx to start


Might be your battery is not charger to it's fullness, or pump your gas one time it might not be getting enough gas, it's been cold try it.

Jan 02, 2013 | Cars & Trucks

1 Answer

Having problem w starter on a fatboy 2004..engine starts sometimes.other times it spins like its not engagin, just keeps spinin. someone said it could b the starter clutch..help


Yes, they are probably correct. The "starter clutch", or "overrunning clutch", is the part that acts like the old Bendix in earlier starting systems. It's basically a "one way bearing" that locks up in order to turn the engine over but freewheels when the engine fires up. It is an integral part of the starter. You can replace it but the starter must be removed from the engine and then disassembled. If you can do the job yourself, you can save some money by not having to replace the entire starter. However since disassembling and reassembling the starter is labor time intensive, if you are going to pay to have the bike fixed, you'd probably be better off simply replacing the entire starter. The labor cost for the repair of the starter would quickly negate any savings you might have realized by repairing the starter.

Good Luck
Steve

Aug 10, 2011 | Harley Davidson FLSTF Fat boy Motorcycles

1 Answer

I have a tuff stuff mini starter on a street rod with a 350 chev motor half the time the starter doesnt turn the motor over it engages but dosent make contact with the fly wheel, then two tries later it...


the starter needs to be able to drive the gear on the bendix out to the flywheel or as you said, it won't work. Generally the solenoid does that by way of a lever. I'd remove the starter and check to see what's causing it to bind up. I've built lots of high horsepower engines and unless there's a huge clearance problem I use a normal factory starter (old style) on just about everything. On very high compression engines I make an ignition cut out so you can get the engine spinning without spark and then turn on the ignition.
If you can see the gear not engaging then it's not being driven out far enough. If you can't see it, then suspect the bendix itself as well.. It's an overrunning clutch and if that's bad it will engage but fail to turn the flywheel.

Jul 06, 2011 | Chevrolet Chevy Cars & Trucks

1 Answer

Dyna super glide will not spin over, took starter off and hooked to power and starter tested good


OK. I sent a "clarification request" to the other post that appeared here but I'll take a guess at the problem here as well. If the starter was spinning but not turning the engine over, it's probably the "overrunning clutch" inside the starter is damaged. This "overrunning clutch" does the same thing that the older "Bendix" used to do. It's basically a one-way bearing or sprag unit. It locks up and drives the clutch drum until the engine fires and then it free-wheels to keep the engine from over spinning the starter.

To replace the overrunning clutch, you must disassemble the starter itself as the part is inside of the Nippondenso type starters. You can go to http://www.bikebandit.com and see an exploded view of the starter. If you don't wish to try it, most shops will replace the part for you and then you can reinstall the starter on your bike.

Good Luck
Steve

Apr 30, 2011 | Harley Davidson FXD Dyna Super Glide...

2 Answers

Truck doesnt start battery is good, cables are good. crossed the two connections on solniod and starter spins but dosnt engadge flywheel. is it my statrer and if so hoe can i get it to work one last time...


Teeth could be broken on overrunning clutch on starter. If you cant get the starter to engage you will not be able to get the engine turned over.

Jan 15, 2011 | 1991 Nissan Pickup

1 Answer

The starter has been tested as good, but the car wont start, any ideas?


load test battery
check for tight, clean connections at battery
check neutral safety or clutch safety switch
check starter relay
check ignition switch
check engine and chassis grounds,
below is from the autozone.com site. click on red X's to view files

Four types of starter motor are utilized depending upon the vehicle transaxle and assembly plant location. Manual transaxle equipped vehicles utilize a conventional starter motor which consists of a yoke, an armature assembly, an overrunning clutch assembly, a solenoid, a commutator end cover, a brush holder and a pinion drive lever. Automatic transaxle equipped vehicles utilize a reduction type starter motor which has, in addition to the components found on conventional starter motors, a reduction gear and shock absorber assembly.
In the basic circuit, the solenoid windings are energized when the ignition switch is turn to the START position and the clutch start/neutral safety switch is closed. The resulting plunger and shift lever movement causes the pinion to engage the engine flywheel ring gear. This movement also causes the starter solenoid contacts to close.
With the contacts closed, the starter solenoid provides a closed circuit between the battery positive terminal and the starter motor. Because the starter motor is permanently grounded to the engine block, the circuit is complete and cranking occurs as soon as the starter solenoid contacts are closed.
When the engine starts, the pinion is designed to overrun and protect the armature from excessive speed until the ignition switch is released from the START position. With the ignition switch released, a return spring in the solenoid assembly forces the starter solenoid contacts open, breaks the circuit between the battery and the starter motor, and disengages the pinion. To prevent prolonged overrun, the ignition switch should be immediately released upon engine start-up.
See Figures 1 and 2



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Fig. Fig. 1: Electrical system diagnosis - No cranking condition



0900c152800487db.jpg enlarge_icon.gifenlarge_tooltip.gif

Fig. Fig. 2: Electrical system diagnosis - Slow cranking condition

Oct 15, 2010 | 1994 Geo Metro

2 Answers

My 92 saab 9000 wont start. it makes a spinning sound sort of like a hairdryer. the battery is fine and i get the oil changed every 3000 miles and all the other fluids regularly checked. so what could it...


Either the timing belt/chain/gears has failed, which can really change the sound of cranking, but the engine visibly goes around.

If the engine does not turn (as it sounds is the case with your car), but the starter spins fast enough to be described as sounding like a hairdryer, then the starter drive is bad and the starter will need to be replaced or rebuilt.

The starter drive is turned by the starter motor, and the drive in turn turns the gear that engages the flywheel of the engine. The part that turns that gear will not let the starter motor be pushed by the engine — it has a one-way, overrunning clutch in it. If the engine got a chance to spin the starter, the starer would simply explode. It is maybe 10 or 15 to one between the engine. One good start using the gas pedal would spin the starter like 15 to 25 thousand RPM...

If that overrunning clutch fails the starter motor cannot spin the gear that turns the engine.

Jun 27, 2010 | 1992 Saab 9000

2 Answers

Ignition has no electicity going to it everything else works and we can start the car by bypassing the ignition is there a fuse somewhere we aren't seeing or a wire or is it the key part does anyone know...


Hi, there should be a fuse and a Starter Relay located in engine compartment, driver side, front side of strut tower, mounted in relay block on fender wall.

Different manufacturers use different abreviations for circuit fuses and relays, I recommend to check all of them.

Also, check if when key is in RUN, power is getting to the Starter Selenoid Mounted on top of the Starter thru the skinny wire (There is a FAT wire coming straight from the battery, that one is HOT at all times,) if power is coming in, REPLACE STARTER SELENOID, if no power present, REPLACE IGNITION SWITCH.

I've includded a troubleshooting chart, instruccions on how to replace STARTER SELENOID and some pictures to help you better identify and fix your problem. (I always think is better to have too much information than not enough) : )

Four types of starter motor are utilized depending upon the vehicle transaxle and assembly plant location. Manual transaxle equipped vehicles utilize a conventional starter motor which consists of a yoke, an armature assembly, an overrunning clutch assembly, a solenoid, a commutator end cover, a brush holder and a pinion drive lever. Automatic transaxle equipped vehicles utilize a reduction type starter motor which has, in addition to the components found on conventional starter motors, a reduction gear and shock absorber assembly.

In the basic circuit, the solenoid windings are energized when the ignition switch is turn to the START position and the clutch start/neutral safety switch is closed. The resulting plunger and shift lever movement causes the pinion to engage the engine flywheel ring gear. This movement also causes the starter solenoid contacts to close
.
With the contacts closed, the starter solenoid provides a closed circuit between the battery positive terminal and the starter motor. Because the starter motor is permanently grounded to the engine block, the circuit is complete and cranking occurs as soon as the starter solenoid contacts are closed.

When the engine starts, the pinion is designed to overrun and protect the armature from excessive speed until the ignition switch is released from the START position. With the ignition switch released, a return spring in the solenoid assembly forces the starter solenoid contacts open, breaks the circuit between the battery and the starter motor, and disengages the pinion. To prevent prolonged overrun, the ignition switch should be immediately released upon engine start-up.


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0900c152800487dc.jpg

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  1. Disconnect the negative battery cable.
  2. Remove the positive battery cable from the starter.
  3. Label and disconnect the solenoid electrical connectors.
  4. Scribe matchmarks on the solenoid and drive housing to ensure proper solenoid installation.
  5. Remove the nut and field coil lead wire from the solenoid.
  6. Remove the screws and solenoid from the starter.

To install:
  1. Lightly grease solenoid plunger.
  2. Install solenoid to starter aligning housing matchmarks.
  3. Install screws and tighten securely.
  4. Install field coil lead wire to solenoid and secure with retaining nut. Tighten to 89 inch lbs.. (10 Nm).
  5. Install the solenoid electrical connector.
  6. Install the positive battery cable. to the starter. Tighten to 89 inch lbs.. (10 Nm).
  7. Connect the negative battery cable.
Let me know how it worked out, Good Luck,

Mar 31, 2010 | 1991 Geo Metro

2 Answers

Bad starting


what do you mean "bad starting"

starter dosnt engage?(starter engauges but dosnt catch flexplate or flywheel, maybe dosnt engauge at all)
barely turns over? (like theres no battery causing hard crank)

you can test your battery by starting the car with the headlights on, if the headlights go dim the battery is bad. your battery could be out of date or the alternator could be bad and not charging the battery.

Nov 13, 2008 | Mazda RX-8 Cars & Trucks

1 Answer

Changing the starter


INSPECT OVERRUNNING CLUTCH 1. Slide the overrunning clutch along the shaft. Replace it if does not slide smoothly. 2. Rotate the overrunning clutch (A) both ways. Does it lock in one direction and rotate smoothly in reverse? If it does not lock in either direction or it locks in both directions, replace it. 299a793.gif 3. If the starter driver gear (B) is worn or damaged, replace the overrunning clutch assembly: the gear is not available separately. Check the condition of the flywheel or torque converter ring gear if the starter drive gear teeth are damaged.
CLEANING 1. Do not immerse parts in cleaning solvent. Immersing the yoke assembly and/or armature will damage the insulation. Wipe these parts with a cloth only. 2. Do not immerse the drive unit in cleaning solvent. The overrun clutch is pre-lubricated at the factory and solvent will wash lubrication from the clutch. 3. The drive unit may be cleaned with a brush moistened with cleaning solvent and wiped dry with a cloth. findme(''); findme(''); findme(''); 7d082d0.gif

Jun 07, 2008 | Hyundai Motor 2004 Sonata

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