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rough idle---fixed
Couldn't take it anymore. cleaned idle speed control valve, worked great. Cleaned volume air flow sensor. Cleaned throttle housing. replace fuel filter, spark plugs, oxygen sensor, cylinder head temp sensor, adjusted valves, ran fuel system cleaner, and then did what cleaned up the rough low rpm problem by replacing the fuel injectors. the injectors made the most difference. The previous owner drove car 4k miles last 13 years and old injectors gummed up at intake where injector gets fuel from fuel rail. Idle is really smooth now with minimal hunting. 1984 m491 coupe.
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08-30-2006, 08:48 PM
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1985 Carrera Coupe
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Thanks for the information!
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Art |
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08-18-2007, 05:04 AM
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Back in New England!
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Can you post a picture of the old injectors? I'm just wondering how bad they looked.
Thanks, MAtt
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'78 RoW 911SC Targa converted to a '86-like 3.2L Cab (w/930 body & No A/C) Custom subframe integrated into AutoPower Half Cage, Euro Ride Height, Turbo Tie-Rods, WeltMeister Bump Steer Kit, Sway-Away 26mm Rear Torsion Bars, Koni Adjustable Shocks and Strut Inserts, Two Bar Rennline Strut Tower Brace, Poly Motor Mounts, WEVO Trans Mounts, Modified Conical K&N Intake, ER PB A-arm bushings and 17" CUP3 Wheels. Steve Wong Chip! |
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08-18-2007, 05:31 AM
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Registered
Join Date: Aug 2002
Location: Galivants Ferry, SC
Posts: 10,550
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also wondering what "kind" of fuel claner you tried first....
Techron ( the full strength stuff...not the kind that says "with Techron") works wonders usually, and precludes replacement of injectors many times.
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Wil Ferch 85 Carrera ( gone, but not forgotten ) |
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08-18-2007, 12:03 PM
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1984 Porsche carrera m491 coupe 3.2 L
1978 Porsche 911 3.2L
