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Fuel System

1995 993 Engine RPM

Vehicle Information: Model: 993; Year: 95; Body Type: Coupe; Total Mileage: 32,000;

I have a 95 993 coupe. 6 speed, non varioram engine. When driving the car, the engine RPM will hang and drop slowly between shifts. While parked the RPM will drop normally when the engine is revved. Everything associated with the throttle linkage has been checked and is free and smooth. I am thinking that there is something associated with the fuel or smog system that would cause the RPM to hang?

2003 996 ethanol fuel

Vehicle Information: Model: 996; Year: 2003; Body Type: Coupe; Total Mileage: 7900;

Hello Joel, Ethanol is to replace MTBE for reducing emissions in my region. What detrimental affects will it have on the engine & fuel system? I have never run less than Sunoco 94Ultra with occasional shots of Sunoco GT Race Fuel 100. Sunoco will be the first to change over. I checked with the other car categories, thinking someone had asked this question. Finding that YOU answer alot of tech Q's. I & certainly many others are grateful for your expertise & time.

1995 993 C4 Starting 993 After Winter Storage

Vehicle Information: Model: 993 C4; Year: 1995; Body Type: Coupe; Total Mileage: 60000;

Not a question, but a success story. Starting 993 after winter storage, 3 months since run. Tried to start, nothing. Waited 30 minutes (flooded?). Still nothing. Added 5 gal gas, nothing. Took out sparkplug, dry. Check PCA Tech Q&A. Read about DME relay and fuel pump several times. Located DME relay, took out and tapped on flashlight. Inserted relay, car fired immediately! Success for the Tech Q&A.Thanks!

2000 996 Really hard to start after fueling

Vehicle Information: Model: 996; Year: 2000; Body Type: Cabriolet; Total Mileage: 63000;

Every time I get gas I have a very difficul time starting the car. I have to crank it for at least 1-2 minutes before it fires up. When I get it going it runs very rough. After the initial hard start I have no probs until I fuel again. Any Guesses?

2002 996 - E 85 Ethanol ? UPDATE

Vehicle Information: Model: 996 - C2; Year: 2002; Body Type: Coupe; Total Mileage: 11,000;

Can my car use E85 Ethanol? Will it wreck the fuel system?There are no stations near SF yet. The only CA stations are at: (They all are only "Private facility. No public access". )Lawrence Berkeley National LaboratoryBerkeley, CA 94720Lawrence Livermore National LabLivermore, CA 94551Vandenberg Air Force BaseLompoc, CA 93437

2004 GT3 Fuel input problems

Vehicle Information: Model: GT3; Year: 2004; Body Type: Coupe; Total Mileage: 7500;

I am having a difficult time putting fuel in my GT3. The fuel overflows almost immediately and sits in the intake pipe. With luck and a lot of patience, I can get sometimes put almost a half tank of fuel in the car but sometimes I can't get 1 gallon in before I give up.

2003 996 FUEL PRESSURE

Vehicle Information: Model: 996; Year: 2003; Body Type: Coupe; Total Mileage: 17000;

CAN MORE POWER BE HAD BY INCREASING FUEL PRESSURE ON THE PUMP OR THE CONTROL UNIT A RELIABLE MECH TOLD ME THAT ONE i THINK HES MKIXED UP WITH A 993 THANKS FERD

1999 996 Fuel Consumption

Vehicle Information: Model: 996; Year: 1999; Body Type: Cabriolet; Total Mileage: 34000;

The onboard computer informs me I drive 15.3 MPG. I try to keep the engine around 3000-4000 RPM. Is this a normal MPG for a 996?

1999 996 Minimum octane permitted for 996

Vehicle Information: Model: 996; Year: 1999; Body Type: Coupe; Total Mileage: 46000;

Should I drive car with a full tank of "regular" gas instead of "premium"? Gas station attendant mistakenly filled tank with regular. Drivers manual says minimum RON should be 95( 98 recommended). I think regular is only 93 or 94. Should I use an octane enhancer to boost octane level? Again drivers manual cautions against octane boosters. Should I drive car for 1/2 tank and then fill with with premium? Any suggestions?

1997 993 CEL P0441 Fuel Tank Ventilation System

Vehicle Information: Model: 993; Year: 1997; Body Type: Coupe; Total Mileage: 46,300;

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