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YOUR RESEARCHHelp please! 2002 996 won?t start
Leading reported evidence
Check connector
Performed · outcome unconfirmed
No successful repair reported for this finding.
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Performed · outcome unconfirmed · Original poster
Hey guys so I checked the connector to the fuel pump today with voltmeter and no 12v getting to the pump
Leading evidence: 'Check connector' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Check connector' (1 discussions). For that action, 0 discussions report a resolution and 0 report an unsuccessful attempt. No action has an explicit, attributable resolution report under the current rules. These are forum reports and suggestions, not a confirmed diagnosis.
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Performed · outcome unconfirmed · Original poster
I checked all the fuses and the relays they�re all good
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Suggestion
- disconnect the fuel rail and check the pressure with a pressure gauge.
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Hello everyone my 996 won�t start was run great at the 2 days ago after park the car in the garage 30sec after it�s just shuts itself off and now it will crank but won�t start. Any ideas
First step is hook up a monitor and see the codes..
Most likely first things,
1. Fuel Pump or Fuel Pump relay
2. Spark (Check fuses and relays)
3. Sensors Crank/Cam
CPS=crank position sensor
Most common cause of "cranks but won't start"
Other common cause=fuel or fuel pump
Have to check fuel pressure at the rail
Then you have to start on all the other stuff...fuses, relays, checking for spark, ignition switch......
If you have a helper, you can try spraying starting fluid into the air intake while someone else is starting it. If it starts to fire up and then dies, the fuel is not getting there, but you have spark and compression.
First thing to do before anything is make sure the carpet or mat hasn't slid up under the clutch pedal prohibiting the little sensor on it from being fully depressed. If the sensor is being stopped from full depression the motor won't crank. GL
If it's NOT a C4 (i.e. the gauge is actually reflective of how much fuel is in the tank, and it shows fuel), I'd suspect the fuel pump, pump electrics (relay), or a clog in the fuel system.
Edit: I's a lot tighter than I remembered.
Bummer. Always pre treat these old cars with BP plaster or similar before trying to remove. Been there done that!
Now you need to center punch and drill it out. It's not that bad, just time consuming... I would blast every nut and bolt while you're there.
Hey everybody a little update
i replace the CPS still doesn�t start
I also replace the fuel pump and fuel pump relay and it still doesn�t start
i checked all the fuses and there are all good everything else (electric) works great
I sprayed carb cleaner to the throttle body and the car start and works perfect for 2-3 seconds and then shuts off again
A few things to try:
- do the e-gas recalibration since it's easy
- unplug the MAF
- disconnect the fuel rail and check the pressure with a pressure gauge. There's a quick disconnect at the upper left side of the engine bay next to the coolant tank. Once disconnected you can use a fuel hose with hose clamp to connect it to a pressure gauge.
Hey guys so I checked the connector to the fuel pump today with voltmeter and no 12v getting to the pump
I checked all the fuses and the relays they�re all good
Upon initial key on the fuel pump will only be momentarily (one or two seconds) commanded to run to prime the fuel system. It will not constant run until the engine is running. Are you checking for voltage on the Green/White (pin 4) of the pump the moment of key on or are you turning the key on and then and then looking.
