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E46 M3 (2001-2006) Engine: S54 - Max Hp: 333 hp at 7,900 rpm / 262 lb/ft at 4,900 rpm
Total Produced: 45,000+ - Years Produced: 2001 to 2006.


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Old Sun, Mar-19-2017, 11:12:21 PM   #1
duracellttu
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Default Starter keeps cranking

So a few weeks ago I had my starter die on me. Previously it had been giving me intermittent starting issues. I got a refurbished Bosch unit from ECS tuning and had it installed. For the past week, I've had no issues. The car starts up with no issues. However, last night I start the car, it doesnt turn over, and the starter keeps cranking when the key isnt turned over all the way. It caught me by surprise and I just turned over the key (like I was starting the car again) but this time the car started. I havent tried starting the car since it happened.

I thought that this was really weird, especially after just replacing the starter.

Any ideas on what could be going on?
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Old Mon, Mar-20-2017, 03:58:13 AM   #2
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Default Re: Starter keeps cranking

Need some help with your desciption/terminology. 1. You didn't start it, you tried to start it, right?
Turn over means the engine/crank moves, so the starter whirs but the engine doesn't move? Or they both move?
Regardless, you say you release the key and starter keeps moving? Here's where the clarifications above are important.
But this much we can say: If the engine turns over and keeps doing so after you release the key, either the key cylinder/contacts are hosed, or the solenoid is hosed (not retracing after the engaging voltage is removed (a spring mechanism with bad/broken parts or worn/misalignment).

ADS
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Old Mon, Mar-20-2017, 04:14:30 AM   #3
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Default Re: Starter keeps cranking

Quote:
Originally Posted by RedM3/4 View Post
Need some help with your desciption/terminology. 1. You didn't start it, you tried to start it, right?
Turn over means the engine/crank moves, so the starter whirs but the engine doesn't move? Or they both move?
Regardless, you say you release the key and starter keeps moving? Here's where the clarifications above are important.
But this much we can say: If the engine turns over and keeps doing so after you release the key, either the key cylinder/contacts are hosed, or the solenoid is hosed (not retracing after the engaging voltage is removed (a spring mechanism with bad/broken parts or worn/misalignment).

ADS


To clarify, I turned the key and heard the starter crank then engine, but it didn't turn over and start the car. When I let the key go back to position 2, the engine was still turning but again didn't start until I turned the key to start it a second time. The starter is a brand new refurb so I dont think it's the starter. Any suggestions on what to look for in the key cylinder? Is it fixable or do I need to replace it?
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Old Mon, Mar-20-2017, 11:42:02 AM   #4
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Default Re: Starter keeps cranking

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Originally Posted by duracellttu View Post
To clarify, I turned the key and heard the starter crank then engine, but it didn't turn over and start the car. When I let the key go back to position 2, the engine was still turning but again didn't start until I turned the key to start it a second time. The starter is a brand new refurb so I dont think it's the starter. Any suggestions on what to look for in the key cylinder? Is it fixable or do I need to replace it?
I had to replace my alternator THREE times in 2 weeks using brand new refurbs.....
YMMV.

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Old Mon, Mar-20-2017, 08:06:03 PM   #5
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Default Re: Starter keeps cranking

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Originally Posted by nuc1 View Post
I had to replace my alternator THREE times in 2 weeks using brand new refurbs.....
YMMV.

Mike
Thats not very reassuring :/

What brand alternator where you using? Just curious, because I have to replace mine soon.
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Old Mon, Mar-20-2017, 09:16:55 PM   #6
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Default Re: Starter keeps cranking

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Originally Posted by duracellttu View Post
Thats not very reassuring :/

What brand alternator where you using? Just curious, because I have to replace mine soon.
Well that was about 4 years ago so.....

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Old Wed, Mar-22-2017, 01:25:37 AM   #7
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Default Re: Starter keeps cranking

Like RedM3/4 was saying...these are the possible scenarios with what you described.
1. Starter solenoid is stuck in the engage position (could be a refurb flaw?) and since the engine doesn't fully start, the overrunning clutch/pinion gear of the starter stays engaged with the flywheel. Simultaneously, the solenoid controlled contact remains closed which provides a continuous 12-volts to the starter. But, if this is the case, the starter will continue to run even with the ignition in off position though.

2. Or the ignition coil. Position "0" is off, position 1 is "run", position 2 is "start". Sounds like position 2 is getting power when the ignition is in position 1 "run" mode. Yes it is replaceable.

Determine which is which then throw money at the rootcause.
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Old Wed, Mar-22-2017, 01:40:44 AM   #8
duracellttu
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Default Re: Starter keeps cranking

Quote:
Originally Posted by Pnick View Post
Like RedM3/4 was saying...these are the possible scenarios with what you described.

1. Starter solenoid is stuck in the engage position (could be a refurb flaw?) and since the engine doesn't fully start, the overrunning clutch/pinion gear of the starter stays engaged with the flywheel. Simultaneously, the solenoid controlled contact remains closed which provides a continuous 12-volts to the starter. But, if this is the case, the starter will continue to run even with the ignition in off position though.



2. Or the ignition coil. Position "0" is off, position 1 is "run", position 2 is "start". Sounds like position 2 is getting power when the ignition is in position 1 "run" mode. Yes it is replaceable.



Determine which is which then throw money at the rootcause.


Thanks for the detailed response. I'm beginning to think it was the ignition coil, but it hasn't happened since the first occurrence. I'm going to wait to see if it happens again, then look into the ignition coil.

I'm assuming the ignition coil is matched to our keys and I would need to replace both??
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Old Wed, Mar-22-2017, 11:38:05 PM   #9
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Default Re: Starter keeps cranking

Ignition module (where you insert your key) not coil. My bad...

I would make sure that you identified the rootcause instead of just throwing money at it. After awhile it gets expensive.
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Old Thu, Mar-23-2017, 12:50:02 AM   #10
duracellttu
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Default Re: Starter keeps cranking

So did anlittleore research in that part and is called the ignition switch, part number 61326901961. The links below are for the part at TMS (although I've found non OEM parts for much much less, between $20-$40) and a DIY at pelican parts

https://www.turnermotorsport.com/p-1...-e39-x3-x5-z4/

http://www.pelicanparts.com/techarti...eplacement.htm
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Rogue Engineering ASP, RSM, RTABs, TM | TMS Sway Bars, Camber Arms, Pullies | Mason Race Strut, Rear X-Brace | AS 30% SSK | aFe Stage 2 | SPAL Fan
AKG FCABs, SFB | Redish Reinforcement | Turbo Toys V2 Hub | WPC Treated Rod Bearings
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Discussing Starter keeps cranking in the E46 M3 (2001-2006) Forum - Engine: S54 - Max Hp: 333 hp at 7,900 rpm / 262 lb/ft at 4,900 rpm
Total Produced: 45,000+ - Years Produced: 2001 to 2006. at BMW M3 Forum.com (E30 M3 | E36 M3 | E46 M3 | E92 M3 | F80/X)