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Help with starting issue
i have a 1976 carrera 3.0 which i have owned for over ten years.i had the starter rebuilt due to not starting about a month ago.
this weekend i had an m&k exhaust installed and we crank the car up and it sounded amazing.i drove it out of the garage to hear it better and i turned it off.a few seconds latter it would not turn over.solenoid is engaging but starter will not turn.all i would hear is the solenoid clicking.i have done all what guys have suggested here as far as checking grounds and the yellow wire, the battery ground etc. today after getting back from work i just tried to crank it up and to my surprise it fired right up.i drove it for 15 minutes and then put it in my garage and tried again three times and it starts right up. i am now scared that this could happen again away from home.any idea what is happening and what is the remedy. this is crazy. 
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76 carrera 3.0 SSI W/M&K 1RARE76/]89 carrera 4 (964)SOLD 87 targa 3.2,fabspeed cat bypass,sw chip,m&k exhaust(sold)94 carrera 2 cabriolet(sold)00 carrera 996(sold) 95 993,red,meanest looking one(sold) 83 911 sc targa,my first porsche(sold) 
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06-05-2013, 07:20 PM
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I Wonder
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Inside the solenoid there is a set of contact points so when the solenoid is energized a round contact plate is drawn in and bridges a connection allowing the current to flow to the starter motor. Sometimes one side will wear more then the other so the plate does not make a good contact or sometimes not even touch. They may not have changed thes contacts inside the solenoid. To check it out you undo the bolts that hold the end plate on the solenoid and open it up. There is a spring under the plate so hold plate to control the spring from flying out. Pull out center core and note the round contact plate and the two side contacts. It is probably a dirty contact point in here. Most starters have this setup. I have had the same scenario. Was probably a coincidence that it happened after you did the work but if it was happening before maybe they did not change the contacts. Good luck. Thanks rob
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06-06-2013, 03:03 AM
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Registered
Join Date: Apr 2010
Location: New Orleans, LA
Posts: 1,493
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it is common for starters to fail by working sporadically rather than failing all at once. if it happens away from home push start.
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1982 911SC, Mocal oil cooler, Bilsteins, Carrera tensioners, backdated heat, factory short shift, Seine gate shift, turbo tie rods, pop off. 2005 Mercedes-Benz C230 kompressor sport 6-speed (daily driver) |
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06-06-2013, 03:24 AM
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muck-raker
Join Date: Jan 2009
Location: Coastal PNW
Posts: 3,059
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you might be surprised to find out how successful you'll be by putting it into 2nd gear and rolling it a couple of feet, then gently letting the clutch out (without "bump starting" it)....put into neutral and retry starting it. Something seems to get freed up whenever I did this.
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STONE '88 Cabriolet, using EP Slick 20w50 partial synthetic Snake Oil...just as Rommel intended.  Deny Everything; Admit Nothing; and Always Make Counter-accusations 
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06-06-2013, 06:18 AM
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Registered
Join Date: Oct 2006
Location: MYR S.C.
Posts: 17,321
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if they did not replace the solenoid it was not a complete rebuild.
there are 3 contacts in there. one is the battery, one is the starter motor and the other is the one that connects the 2 others together to run the motor. i dont know of any way to change the one on the solenoid itself, but they can be cleaned and what i do is rotate them so that new "meat" is on contact. check my thread and you will see what i mean. SOLENOID and STARTER rebuild......finally if the solenoid is pulling in, it is either the solenoid contacts or there is not enough power to the starter to run the motor. inspecting the grounds and other connections it not enough. they need to be removed and cleaned. dont forget the tranny to the body
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86 930 94kmiles [_  _] RUNNING:[__] NOT RUNNING: ____77 911S widebody: SOLD88 BMW 325is 200K+ SOLD 03 BMW 330CI 220K:: [_ _] RUNNING: [__] NOT RUNNING:01 suburban 330K:: [_ _] RUNNING: [__] NOT RUNNING:RACE CAR:: sold |
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06-06-2013, 06:27 AM
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thanks for the help.
i will take it and get it checked out.i have driven it the last two days with no issues. scared thought.i could hapen again away from home.
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76 carrera 3.0 SSI W/M&K 1RARE76/]89 carrera 4 (964)SOLD 87 targa 3.2,fabspeed cat bypass,sw chip,m&k exhaust(sold)94 carrera 2 cabriolet(sold)00 carrera 996(sold) 95 993,red,meanest looking one(sold) 83 911 sc targa,my first porsche(sold)
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06-07-2013, 05:45 PM
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My Favorite
AWSOME 964
carrera 3.0
