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Join Date: Oct 2003
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911 wont start

My car is currently stuck in a gym parking lot. It started fine, drove 5 minutes to the gym, worked out for maybe 25 minutes, came back out and the car wouldnt start. It cranks over fine, but there is no ignition. It is acting like a car without gas, and there is no smell of gas as I try to start.

There is a 3/4 tank of gas and the battery is fine.

Help!?

-Matt

ps: outside temperature is in the 50's, 60's, car did not drive through any puddles, car has never done this before.

Old 01-04-2004, 07:21 AM
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Assuming you have a CIS car, do you hear the whine of the cd box when ign is on?

You should also hear the fuel pump with ign on, you may take off the air box cover and lift the plenum you should hear fuel pulsing to the injectors.
Old 01-04-2004, 07:45 AM
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What year is the car? If it is a CIS like mine you may be having the "warm start" problems many of us have had. It is an easy fix with either a new check valve or accumulator. But it could be something else to. Where it sat for 25 minutes I think it might be something else because if mine would NOT start and I let it sit for 1/2 hour thats when it would start

IF CIS - open the airbox, take out the air filter, there is a lever on the inside top of the airbox push it up and let it come down under its own power, do this 2 or 3 times then try restarting it

Let us know more about the car, year, engine etc

Shawn
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Old 01-04-2004, 07:57 AM
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it is an 86 911 Coupe. That would be the mfi, not CIS i believe.

-Matt
Old 01-04-2004, 08:50 AM
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Check out this website (www.systemsc.com) on the Diagnostics page
under No-Start for some possible helpful info.

The most common 3.2 problems are:
1. DME relay under drivers seat
2. bad electrical connections
3. bad pickup sensors

Good Luck
Loren
'88 3.2
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Old 01-04-2004, 09:27 AM
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I wonder if this has anything to do with the use of Redline Fuel Injector Cleaner I put in 2 days ago for the first time as I filled it up.

-Matt
Old 01-04-2004, 10:01 AM
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Not likely. I would start with the DME relay under the driver's seat. There is a particular line in the circuit which *always* fractures and the car won't start.

Sometimes pulling it out and putting it back in works. Also check your distributor cap; make sure it's on firmly. Check your coil wire. Then grab a spare spark plug, pull a wire out, and hook it up. Have an assistant crank the engine while watching the plug for spark. If you have spark, then it's a fuel problem; possibly a bad fuel pump, fuel pump relay, or DME relay (or DME unit).

Good luck.
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Old 01-04-2004, 10:31 AM
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Quote:
Originally posted by Matt7084
it is an 86 911 Coupe. That would be the mfi, not CIS i believe.

-Matt
'86s run on Motronic (DME), not MFI.
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Last edited by Langers; 01-04-2004 at 06:27 PM..
Old 01-04-2004, 02:30 PM
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Hi Matt, can you hear the fuel pump running? Either when you turn the key to the run or start position? If you hear the pump going, then at least half of your DME relay is working. Do you have spark, if not, could be as simple as the other half of the DME relay bad. If you can, try a known good relay, if it still does not start, it is likely that the Ref. mark/speed sensors have taken a dirt nap.
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Old 01-04-2004, 09:18 PM
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right, i was thinking mfi as in motronic fuel injection...

Old 01-04-2004, 10:09 PM
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