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Registered
Join Date: Aug 2008
Location: Mallorca 9treffen
Posts: 318
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964 with little problem
I have a littlel problem with my 964
when the clock of temp in more little up with the pic, the engine run perfect but when Y stoped the engine and turn push the start and the engine is hot not satart and no work. one hour later the engine start perfect . when it has cooled .  I´m bodywork car painter and when is this little problem ???? I change the dme relay and no see the problem at a glance. thank you for your answers later hang pictures of my car!!!!! |
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08-21-2010, 03:52 AM
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Registered
Join Date: Oct 2002
Location: Philly Area
Posts: 121
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I assume that the engine turns over, but just does not start. I would suspect that you are experiencing "vapor lock" in the gas (petrol) line.
My old 914 was always having this condition on hot stop-starts. I found that turning the key on, and allowing the fuel pump to run for a few seconds, then off, followed by on-wait-off, on-wait-off, would circulate the fuel and disperse the vapor. Then the car would start.
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LouZ '90 C2 TIP '08 Cayman S |
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08-21-2010, 06:16 AM
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Now in 993 land ...
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You need to tell us what happens when you turn the key? Does the starter crank over the engine normally? If not you have heat soak - either bad starter, solenoid or wiring.
G |
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08-21-2010, 09:58 AM
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Bandwidth AbUser
Join Date: Nov 2001
Location: SoCal
Posts: 29,522
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I dug this up from Rennlist:
964 Hot Start Problem From: "Adrian Streather" Dear Rory, This is an old Porsche problem. Uncommon on the 964s but not unheard of. before you go start changing the sensors I highly recommend youget the Bosch Hammer connected up straight after stopping after you have got it nice and hot. The most common failures for this problem are, Fuel Pump/DME relay Fuel Pump Overheating Fuel Pump Wiring damaged or other wiring damaged feeding the DME Engine Temp Sensor II Intake Air Temp Sensor Check your fuel pressure Check for air intake leak Check operation of tank venting valve. Try resetting the DME first of all. Turn ignition to run but not start then put fot on gas pedal for more than 11 seconds. Or my preferred way, gets around all these On Board Computer systems as well. Disconnect the battery for five minutes, reconnect battery, go for a drive lasting more than ten minutes without turning engine off, Ciao, Adrian. 911C4 944
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Jim R. |
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08-21-2010, 11:54 AM
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