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Registered
Join Date: Mar 2006
Location: North Georgia
Posts: 29
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Engine "stutter"
Engine stutter on a 1983 911SC.
This has been a problem for a couple of years now and I am worried that if I do not diagnose it now my car will leave me on the side of the road one of these days. This almost never happens when I am accelerating, it happens more often when I am just cruising at 3000-3400 RPM. I do know that the fuel filter likely has 30K plus miles on it and am going to change that, but my experience with other vehicles is that a dirty fuel filter causes more problems on acceleration than just plain cruising, so I am doubtful that the fuel filter is the root of my problem. Any ideas or suggestions would be greatly appreciated. Rob '83 911SC |
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03-18-2011, 12:00 PM
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Join Date: Nov 2002
Location: Los Angeles
Posts: 2,571
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Is the lamda working?
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03-18-2011, 12:49 PM
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RETIRED
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Likely a fuel filter or crap in the tank.....
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1983/3.6, backdate to long hood 2012 ML350 3.0 Turbo Diesel |
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03-18-2011, 01:51 PM
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muck-raker
Join Date: Jan 2009
Location: Coastal PNW
Posts: 3,059
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plugs, rotor, wires, cap, etc. etc....could be just about anything.
Particularly the fuel filter. If it's got 30K on it, I'd replace it just for peace of mind. I've seen all kinds of problems with dirty filters, other than the one you describe.
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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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03-18-2011, 03:41 PM
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Join Date: Oct 2008
Location: Nash County, NC.
Posts: 8,516
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I would look at the silver relay under the pass. seat. When that goes irratic is like having a fuel pressure problem.
Bruce |
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03-18-2011, 03:50 PM
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Location: seattle, WA
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i have an 87 that has stuttered a few times on different occasions but going uphill but not accelerating just maintaining speed. i haven't changed the fuel filter but plan to. is this relay you talk about under the passenger seat on all fi 911s?
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ken 87 targa |
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03-18-2011, 05:30 PM
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Join Date: Oct 2008
Location: Nash County, NC.
Posts: 8,516
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Just on the 80 to 83 with the oxygen sensor has the silver relay.
Carrera has a whole different set of culpable sensors that can cause problems. Bruce |
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03-18-2011, 05:39 PM
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muck-raker
Join Date: Jan 2009
Location: Coastal PNW
Posts: 3,059
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Quote:
__________________
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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03-18-2011, 06:37 PM
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Registered
Join Date: Mar 2006
Location: North Georgia
Posts: 29
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Thanks
Thanks for the replies, when I can get beyond my shift-coupler adjustment problems I will change out the fuel filter and go from there.
Anyone have any good advice for adjusting my shift coupler? I describe my problems with that here: Shifter, Shift Linkage, and Adjustments Rob 83 911SC |
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03-25-2011, 07:11 AM
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Registered
Join Date: Apr 2004
Location: Arlington, VA
Posts: 77
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Tired fuel pump?
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_____________ 1985.1 944 NA Past: 84 RoW Coupe, 86 Carrera, 95 993, 80 SC, 73.5 T |
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03-25-2011, 07:59 AM
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Da cab
