2012 boss 302 shut off

[Eatrunner]

I was at the NCM track today. First time on a track for a 4 lap session in preparation for a full day this coming Saturday. On Lap 4 the car flashed the engine light and then shut completely off. Tried to restart and it would turn over, but not start. Towed to garage and about 30 min later it started and ran fine. Temperature was good and oil pressure was good. Drove it home and all was fine. Track key was in during and the engine temperature was about 225+ at the time it shut off. Help Why would it shut down?

 

[PLexo50]

Did you happen to scan your car to see what the check engine light was/is for?

 

[Eatrunner]

Did you happen to scan your car to see what the check engine light was/is for?

Yes I just had it read. It was P0300: Random, Multiple Misfire Detected Car drove to get tested fine and even ran it hard and it was fine. No code is showing. Just additional information, 2012 boss LS, no modifications, 2100 miles

 

[67GTA]

Yes I just had it read. It was P0300: Random, Multiple Misfire Detected Car drove to get tested fine and even ran it hard and it was fine. No code is showing. Just additional information, 2012 boss LS, no modifications, 2100 miles

With such low miles, I would bet this TSB has not been performed on the car. Pretty simple fix for less than $30 to replace the crankshaft position sensor with the o-ring style if you don’t feel like taking it into the dealer. Are you the original owner? If not, perhaps call the dealer to have them check service records to see if this has been done.

TSB 13-06-15 Random Misfire Code and O-Ring Fix

https://trackmustangsonline.com/thr...ford-issued-technical-service-bulletins.5800/

 

[Eatrunner]

Ford has the o ring. They want $200 to put it in the car. The o ring is $3.90. Is this something that can be done at home? Just unbolt, put on the o ring and replace it in the block? What does the o ring actually do for the postion sensor? Thanks

 

[67GTA]

Ford has the o ring. They want $200 to put it in the car. The o ring is $3.90. Is this something that can be done at home? Just unbolt, put on the o ring and replace it in the block? What does the o ring actually do for the postion sensor? Thanks

It’s a really simple replacement - one bolt that holds the sensor in. The sensor is located behind the right hand cylinder head - down near where the bell housing bolts to the block. Google the TSB # referenced above and you’ll find a pdf of the actual Ford bulletin with pictures. No way that I would pay $200 for this install - it’s really that simple.

As far as function, the o-ring isolates the sensor from vibrations and “noise” from the engine and transmission.

 

[Pitt Stang]

Got the same code tracking my 012 Boss this summer. Ordered the o-ring thru Amazon and will be installing shortly. Awesome advice as this was driving me crazy.

Thanks!

 

[TMSBOSS]

While you have the sensor out, check to see how clean it is. Sometimes clutch dust will build on the sensor. Clean it up with a shot of carb cleaner before you side it back in.

 

[Eatrunner]

Ford has the o ring. They want $200 to put it in the car. The o ring is $3.90. Is this something that can be done at home? Just unbolt, put on the o ring and replace it in the block? What does the o ring actually do for the postion sensor? Thanks

Just took out the sensor and it has the o ring already installed. Guess I will not be going to the track this weekend.
Any other ideas? If it got hot and did not throw up a engine overheat light I wonder why the car stopped?
Thanks

 

[Pitt Stang]

Crap. My original crank sensor, too, has an o-ring.

Any suggestions to cure a P0300 code? I already replaced my coil packs with new MSD’s.

Thanks!

 

[Pitt Stang]

FYI, I was thinking about adding a 2nd o-ring since I didn’t think it would hurt anything and would just get chewed up in the flywheel worst case.

I googled the actual TSB and it looks like you are actually supposed to add the 2nd o-ring per the attached photo. Who knew? I’ll try it and report back in 2 weeks. I have back to back TNiA and a HPDE.

 

[Pitt Stang]

With new o-ring.

 

[TMSBOSS]

Replacing the pickup ring with the CJ ring and or replacing the wiring harness worked for some.

 

[Eatrunner]

Just took out the sensor and it has the o ring already installed. Guess I will not be going to the track this weekend.
Any other ideas? If it got hot and did not throw up a engine overheat light I wonder why the car stopped?
Thanks

 

[Eatrunner]

Took the! grill out and the overheating issue went away! 4 hard laps at the track and never got above 200 degrees. The overheating must have made the computer go into safe mode and shut the engine down. When to my track day and ran all day with no issues.https://www.youtube.com/watch?v=jo-3u9aLMTk

 

[Pitt Stang]

Threw a 0030 code at yesterday’s HPDE after putting an o-ring on the original crank sensor.

Threw a new sensor in last night. We’ll see if I get a code at tonight’s TNiA.

 

[67GTA]

Threw a 0030 code at yesterday’s HPDE after putting an o-ring on the original crank sensor.

Threw a new sensor in last night. We’ll see if I get a code at tonight’s TNiA.

Did you perform the crank relearn procedure after the o-ring install, and now after the new sensor install?

 

[Pitt Stang]

I did not do the relearn procedure. Is there a link to this procedure?

Thanks! (BTW,I did not get a code at tonites TNiA):