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Registered
Join Date: Jan 2004
Location: Chicago, IL
Posts: 415
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No start issue.....battery question
The car in question is a well-sorted 82SC with no previous issues during my 13 years of ownership. Hasn't been driven since Thanksgiving (Chicago). When I put it away it was running perfectly. I attempted to pull it out of the garage to wash it the other day......no start. Turned over pretty weakly, but wouldn't catch. The car is always on a Battery Tender, but the Optima red-top is about 10 years old. In the past, it has fired up after a winter's rest as if it was driven the day before. The car is mechanically totally stock.
I have spark, the CIS is functioning, as is the fuel pump. Regardless of the problem, I'm going to install a new battery. My question is can a weak battery by itself cause this situation. Is an up-to-snuff battery an absolute necessity to trigger a strong enough spark/ignition/fuel delivery for starting. Thanks, Steve
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'82 911 SC |
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03-16-2015, 08:18 AM
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Counterclockwise?
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Without trying to sound .....
Did you test the battery before and after trying to start the car? I've never had a battery last 10 years. And to answer your question. Maybe before you drained it trying to get it going.
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Rod 1986 Carrera 2001 996TT A bunch of stuff with spark plugs Last edited by 911 Rod; 03-16-2015 at 11:05 AM.. |
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03-16-2015, 08:30 AM
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Coincidentally, I had a similar issue yesterday (but the similarity ended when my car started). Anyway, I hadn't driven mine for over a month due to this brutal Tennessee winter (
 ) and had to put it on the charger. It started up after that.When disconnecting my charger, though, I noticed that my battery was made in September 2006. I can't believe it is still working.
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Mike 1976 Euro 911 3.2 w/10.3 compression & SSIs 22/29 torsions, 22/22 adjustable sways, Carrera brakes |
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03-16-2015, 09:34 AM
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Member 911 Anonymous
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+1 need to check the voltage. 13 years is a good run, 3+ years past it's life ain't bad at all.
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'85 Carrera Targa Factory Marble Grey/Black * Turbo Tail * 930 Steering Wheel* Sport Seats * 17" Fuchs (r) * 3.4 * 964 Cams * 915 * LSD * Factory SS * Turbo Tie Rods * Bilsteins * Euro Pre-Muff * SW Chip on 4K DME * NGK * Sienes GSK * Targa Body Brace PCA/POC |
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03-16-2015, 10:50 AM
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Registered
Join Date: Jan 2004
Location: Chicago, IL
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Would slow cranking contribute to this no-start situation? I'm still going to order a new battery. Anyone? Thanks
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03-17-2015, 06:08 AM
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Member 911 Anonymous
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Contribute, no. Symptoms of a weak to dead battery, yes. Take it to a FLAPS and test it, especially the Cold Crank Amps
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'85 Carrera Targa Factory Marble Grey/Black * Turbo Tail * 930 Steering Wheel* Sport Seats * 17" Fuchs (r) * 3.4 * 964 Cams * 915 * LSD * Factory SS * Turbo Tie Rods * Bilsteins * Euro Pre-Muff * SW Chip on 4K DME * NGK * Sienes GSK * Targa Body Brace PCA/POC |
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03-17-2015, 07:01 AM
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Join Date: Oct 2006
Location: MYR S.C.
Posts: 17,321
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yes.
the cold start valve needs a certain voltage to fire. i dont remember for sure but i am thinking around 9v. if the battery volt drops below that, the CSV will not work. otherwise a slow starting WARM engine can start with a low battery.
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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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03-17-2015, 07:09 AM
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Member 911 Anonymous
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I stand corrected :-)
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'85 Carrera Targa Factory Marble Grey/Black * Turbo Tail * 930 Steering Wheel* Sport Seats * 17" Fuchs (r) * 3.4 * 964 Cams * 915 * LSD * Factory SS * Turbo Tie Rods * Bilsteins * Euro Pre-Muff * SW Chip on 4K DME * NGK * Sienes GSK * Targa Body Brace PCA/POC |
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03-17-2015, 07:21 AM
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Join Date: Oct 2006
Location: MYR S.C.
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oh its possible to still have another issue, and probably just because i said yes he will have another issue. but i would fix the battery before i did anything else.
tony has tested the CSV firing voltage just for an issue like this, i just dont remember for sure what it was.
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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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03-17-2015, 08:21 AM
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1976 Porsche 911
Marble Grey
