coasting with clutch in... car stalls

[fast95talon]

hey i have been having this problem with a 1992 laser i just bought.. everythign else is working properly but when i am driving and i press the clutch in so the car comes out of gear the car stalls out.. when i release the clutch the car comes right back on.. whats will cause this?? here are the mods..

wiesco pistons
eagle rods
tial external wastegate
fmic
2g maf
1g bov recirculated
big 16g
2g intake manifold
safc
550cc rc injectors
afpr
walbro 255

please give me any advice if you have any.. the car is not leaking vaccum its steady at 18 vac and the alternator is working properly.

thanks in advance

 

[Splitpi]

Boost leak test.

 

[DougR]

1st guess. IAC = Idle air controller...

 

[ekanddsm]

Check they nuetral switch, it tells the ecu when your in gear. when it dies the ecu doesnt know to start the isc because it still thinks your in gear

 

[Black91TSiAWD]

Usually if the clutch switch is bad it will cause a no-start situation.

It could be the ISC, or your idle is set too low, or you have a boost leak, any one of those plus a few other things could cause that to happen.

The car magically starting back up again when you let the clutch out is just you pop-starting the car.

 

[Captain D]

I had the same problem. My Idle Speed Controller (ISC) had a bad coil. The ISC has 4 coils and if 1 or more are bad the car will stall. There is an easy way to test the ISC with a multimeter: DmTaLoN's Idle Speed Control Test/Fix Page!.

In addition, if you have a bad coil it can burn up the drivers in the ECU over a period of time.

 

[silver bullit]

Massive boost leak

 

[Defiant]

I want to hear what a boost leak could possibly have to do with a car dying in neutral.

First, never coast. Stay in gear all the time you possibly can. Fuel injection cuts off the gas supply when you close the throttle, so neutral does nothing but remove chassis control.

What's your idle speed set at?