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-   -   Help! My cobra shuts itself off? (http://www.clubcobra.com/forums/shop-talk/96697-help-my-cobra-shuts-itself-off.html)

jerry w 05-03-2009 12:50 PM
Help! My cobra shuts itself off?
 
Looking for help and advice in tracking down this intermittent problem:

Driving along at highway speeds, anywhere from 30 to 45 mph. Not during acceleration but cruising. Engine shuts off.

Here are some clues:
- Rebuilt 1968 302 engine is always warm and up to temperature
- there is no sputtering or hesitation
- does not happen at idle
- does not happen when I accelerate
- does not happen every time
- running electronic distributor with ford parts


I am apt to believe I have an electrical problem, since the engine never stutters, hesitates or misfires. But if I am wrong someone tell me.

If anyone has input where I might start to track down this annoying problem I would appreciate all advice.
:confused:

767Jockey 05-03-2009 12:57 PM
Fuel injected or carbed? What ignition are you running? I know it's Ford, but what is it?

FWB 05-03-2009 12:58 PM
without more troubleshooting info its hard to make a call. but the first thing are the basics , fuel, spark, then output of the alternator, bad wire from ignition, msd? duraspark? loose coil wire?

jwd 05-03-2009 01:07 PM
Does it start right back up or does it have to sit for a while?

Jim

jerry w 05-03-2009 01:18 PM
Pull to the side of the road, put it in park, starts right up.

-running a carb

jams 05-03-2009 01:36 PM
Could it be vapor Lock?

ERA Chas 05-03-2009 02:05 PM
Neutral safety switch.

jwd 05-03-2009 02:08 PM
Quote:
Originally Posted by jerry w (Post 945679)
Pull to the side of the road, put it in park, starts right up.

-running a carb
Bad ignition switch or loose wire in the ignition system? I hate intermittent problems. :mad: If the damn thing would just stay broken, it would be an easy fix.

Jim

jwd 05-03-2009 02:10 PM
Quote:
Originally Posted by ERA Chas (Post 945691)
Neutral safety switch.
That only effects the starting circuit. It does nothing once the engine is running.

Jim

Rick Parker 05-03-2009 02:59 PM
Replace the Module inside the distributor, and the "BOX". Heat is causing open circuit.

ERA Chas 05-03-2009 06:50 PM
I stand corrected JWD. I think Rick is on the right path. Is that the famous Ford "Thick film module"?

Great Asp 05-03-2009 07:05 PM
crack in the coil allowed the oil to get out.

Coil gets hot, engine quits,

Change coil

E

Dangerous Doug 05-03-2009 07:09 PM
Yeah, check the coil. Get your DMM and test the voltage on the - and + poles. Jump in and drive around until it dies. Verify that it won't start right up, test the output on the coil again. I'll bet you on either the + or - poles you get the wrong voltage.

Make sure if you have an oil filled coil it is standing upright in it's mount, not laying on it's side.

DD

jwd 05-03-2009 07:27 PM
Heat issues require a cooling off period that this situation doesn't appear to need. I'm still betting on a bad switch or a loose connection. Been there, done that. If it starts right back up, it's not a heat issue.

Jim

Sal Gerace 05-03-2009 07:57 PM
Jerry I am not a big guy and on occasion my knee has slightly rubbed the ignition switch and shut the car down. Sounds simple just something to consider.

jerry w 05-04-2009 05:57 PM
Thank you all for replying. I am going to start eliminating all the possibilites mentioned one by one until I find the problem. Love this forum.

Dwight 05-04-2009 08:29 PM
check you fuel filter.


Dwight

Cobrabill 05-04-2009 10:05 PM
Had a similar issue with a MSD Distributor.It turned out to be the magnet in the distributor was cracked thus interupting the "field".

lovehamr 05-05-2009 06:25 AM
Quote:
Originally Posted by jerry w (Post 945679)
Pull to the side of the road, put it in park, starts right up.

I think it's just rebelling because it has an automatic! :LOL:

Steve

jerry w 05-05-2009 03:17 PM
ahhh, lest ye forget the highest price ever paid for a cobra at BJ auction was...........equiped with an automatic!:3DSMILE:


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