cisurfer

well this is the second time this week, first time i thot it was my mistake becuz i have a lanyard on my key and maybe i accidently pulled it and turned the key off but didnt think so and tonight while coasting in neutral my car just shut off, not stutter or nothign just like if i shut my ignition off...started up perfect...i have a 5 spd...and dubarado (who i was following, we live 4 houses apart) said it was posted on here once and it happened wit a person with a 5spd...please help this could be dangerous!

NotStok

https://mustangforums.com/m_587901/tm.htm

Clean yer IAC.

ripped camel

Also have your battery & alternator tested.

cisurfer

and idk if this is related but recently every day on the first start it takes like 6-8 seconds of cranking to start it the engine, its never been like this, even in the winter it would crank 2-4 times not 6-10 like it is now

99BlackPonyGT

happened to me...clean your IAC or replace it

hot wheels

i had the same problem. i changed the iac, still did it. lo and behold i changed my tb/plenum back to stock and now it runs perfect. i saw you have an aftermarket75mm like i did. don't know if it's causing you the same problems but it's a thought.

99BlackPonyGT

theres gotta be something else wrong with your car....tb/plenum wouldnt make that happen....maybe you just had it installed wrong or had a vacuum leak

baino

If you were running your car hard then threw it into nuetral and it died, it might also be the fuel filter. Sounds lame but it happened to me. Found some bad petro i guess and she died twice on me, swapped it and had no prob. <cheapest to start with on your search

karrarararararar

clean or replace your IAC

doughboy4.6

Disconnect your batteri you have a sct tune your cumputer will still adapt to changes such as weather and how good the air is worth a try