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Starting Problem

OK I hate to advertise my ignorance, but electrics plumb evade me. Car starts and runs fine, but after say 20 mins or so, if I shut her down she won't start again till everything cools way down. I don't know if it's just a dirty/corroded connection or a bad solenoid. Pop starting it has become dangerous (slipped yesterday and landed on my tail bone as the car kept rolling away), and I don't want to leave it running every time I need to make a stop. Help is much appreciated.
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'85 (Early) 944 - Beater
'87 924S - Crunch/Rebuild
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Old 09-29-2003, 10:51 PM
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Your ground cable is probably in need of replacement - goes from the negative of the battery to the block, right behind cylinder 4

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Old 09-30-2003, 04:03 AM
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Also include the positive terminal. Replaced one on Gordon's car and it cranks everytime now.

Search for previous thread.
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Hugh - So Cal 83 944 Driver Person
NOT a 'real' Porsche -- Its Better!!!!
When was the last time you changed your timing and balance belts and/or cam chain and tensioner?
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Old 09-30-2003, 08:01 AM
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With a hot starting problem that goes away when the car cools down I would put a bad check valve on the fuel pump high up on the list. Fuel in the injector rail is heated up via heat soak and vaporizes which forces fuel back into the gas tank because the check valve is leaking and results in vapor lock.

I'm not sure if you can buy just the check valve and you may need a whole new fuel pump.
Old 09-30-2003, 09:55 AM
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Gesh! It's a wonder these things start at all!
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Hugh - So Cal 83 944 Driver Person
NOT a 'real' Porsche -- Its Better!!!!
When was the last time you changed your timing and balance belts and/or cam chain and tensioner?
New Users please add your car's year and model to your signature line!
Never break more than you fix!
Old 09-30-2003, 11:50 AM
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Quote:
Originally posted by SoCal Driver
Gesh! It's a wonder these things start at all!
Now thats funny!!

Try just cleaning your battery terminals really well, and the connection at the solenoid. If it continues then do a SoCal says!

Personally, Id pull solenoid and have it tested also. But then, I had a 69 Firebird that didnt like a single one I put in! So now, anytime a car wont start when hot, I blame the solenoid!
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Old 09-30-2003, 12:28 PM
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Guys,
Thanks a bunch. Pulled the ground wire from the Battery, cleaned and sprayed 'Wire Dry" on both ends, then (this car has two grounds one from the batt to the firewall, then from the other side of the firewall to the engine) cleaned the other firewall connection and sprayed it (required unplugging both flywheel sensors). I couldn't get to the engine connection without disconnecting a heater hose, Sooo ... under the car and did the same routine with all the starter connections (not alot of play in the wires, but got the crud off). So far no prob, car starts every time. Hooyah!
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'85 (Early) 944 - Beater
'87 924S - Crunch/Rebuild
'76 924 - Long Gone
"If everything seems under control, you're just not going fast enough."
- Mario Andretti
Old 10-03-2003, 06:20 PM
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Grounds! Why is it always the grounds!!!
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Hugh - So Cal 83 944 Driver Person
NOT a 'real' Porsche -- Its Better!!!!
When was the last time you changed your timing and balance belts and/or cam chain and tensioner?
New Users please add your car's year and model to your signature line!
Never break more than you fix!
Old 10-03-2003, 07:31 PM
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