need help car turns off on its own
 

when i shift to nuetral when coasting off the highway today the car rpms just dropped and the car just turned off like it was in gear and was going to slow and killed or something my car has been in my garage all winter and today was the first day i brought it out and this is the first time this is happened and it happened three diffrent times today can anyone tell me what it is or how to fix it any insight will be great

Codes?

Have you checked for vacuum leaks?

MAF and intake clean?

Mods?

Please give more info on your setup. For instance, was the car stored with the battery out? How many miles? What ignition are your running? Fuel level? Did you stabilize your gas? Do you premix?

stored in a heated garage battery cables disconnected got greaddy hi power exhaust and just put in mishimoto ram intake everything else stock no i didnt stabalize gas just over 60000 on car its an 04 dont know what else to give u it only did it when i was comming down from speeds over 60mph

Note that when the battery is disconnected, the car has to re-learn fuel trims. There've been a few that stall after running on the highway in the first couple of drive cycles. If this is the problem, it will just disappear.

Next, start with the intake (it's easiest).

If you just put your new intake in over the winter, make sure you have connected and/or plugged all the vacuum lines (especially where you removed the VFAD) & the line from underneath the oil filler cap. Clean the MAF with some MAF cleaner and make sure the electrical connections are clean and tight. Check the throttle unit for gunk buildup and no air leaks at the same time.

If all is well, then the problem is narrowed down to either ignition or fuel. Ignition is the next easiest to check......

Check for intermittent clutch pedal switch operation. There are two and you may as well check both while you are under the dash.;)

Get the code pulled and let us know.
Sounds very familiar... but want to know what the code(s) are before speculating.

yea sounds like the car needs to just re learn the fuel trims... that happens to my 8 every time i disconnect the battery

Check you Alternator readings, take it to Auto Zone for free check up, also you might wanna check your spark plugs + wires, coils etc. consider upgrading.

How often is the maintance done in your car + aprox daily mileage ?

Ok I was in my shop today during class and I checked for codes nothing came up And the car hasent completly stalled since Saturday so I beleive that it just needed to relearn fuel trims thank u everybody for ur insight if I have anymore problems I'll be sure to post thanks