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-   -   Mustang Won't Stay Running!! (https://mustangboards.com/modular-4-6l-tech/14777-mustang-wont-stay-running.html)

TClark22 06-17-2006 01:18 PM

im not gonna lie here...what the hell is a IAC and PCV valve?

stevemainian 06-17-2006 03:28 PM


Originally Posted by TClark22
im not gonna lie here...what the hell is a IAC and PCV valve?

Idle air control valve
Positive crankcase ventilation valve

r3dn3ck 06-17-2006 05:23 PM

IAC is a bypass valve that lets air get in without going through the throttle body. It allows the ECU to control the amount of air let in to the motor while the throttle blade is completely closed. Basically... it controls the idle.

PCV is a check valve that allows air to be sucked out of the crankcase to keep it ventilated of acidic fumes and nasty vapors of various sorts. The breather is on the other side of the engine and allows air to enter the crankcase to replace that which is sucked out through the PCV valve. The PCV will close if pressure hits it so you don't blow out seals and gaskets in the bottom end, like in the event of a backfire.

mpowerstang 06-18-2006 06:40 AM


Originally Posted by 4.6 Love
Spray your iac with some carb cleaner....it will solve your problem...

Not tryin to be an ass, but cleaning them does nothing, just a temporary fix if that... :)

GREG@SN95 06-18-2006 06:09 PM

hey... uh...

my car isnt running too great either...

any idea what the problem could be?

stevemainian 06-18-2006 08:29 PM


Originally Posted by GREG@SN95
hey... uh...

my car isnt running too great either...

any idea what the problem could be?

By looking at your sig.. You may need a new car.

r3dn3ck 06-19-2006 07:30 AM

it looks like you won the telephone pole chopping contest... that'd be where I'd start. Most cars dont' like being totalled.

GREG@SN95 06-19-2006 03:52 PM


Originally Posted by r3dn3ck
it looks like you won the telephone pole chopping contest... that'd be where I'd start. Most cars dont' like being totalled.

WHAT!?!?!

she aint totaled:devil2:

4.6 Love 06-19-2006 04:03 PM


Originally Posted by mpowerstang
Not tryin to be an ass, but cleaning them does nothing, just a temporary fix if that... :)


Not entirely true...I had the same problem slither had right around 40k or so...i'm now at 94,4xx and i haven't had a single problem so far...:)

r3dn3ck 06-19-2006 04:03 PM

oh... sorry. The caved in front end threw me. Tube chassis time. :punk:

mpowerstang 06-19-2006 05:12 PM


Originally Posted by 4.6 Love
Not entirely true...I had the same problem slither had right around 40k or so...i'm now at 94,4xx and i haven't had a single problem so far...:)

You just got lucky....I cleaned mine and it lasted about 1500 miles and it acted up again, so I cleaned it and it didn't help, so I bought a new one....problem solved.

roushrider81 06-19-2006 05:18 PM

Random but this happened to my lawn mower today and now i cant finish the yard:(

GREG@SN95 06-19-2006 07:50 PM


Originally Posted by roushrider81
Random but this happened to my lawn mower today and now i cant finish the yard:(

is there gas in the tank?:poke:


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