Starting problem - 4.0 SOHC

[Z3NYC]

I've been searching the forums for about an hour and I haven't come across this problem...

I have a '00 SOHC 4.0 that starts, but you need to keep your foot on the gas to get the engine to stay on. The car dies at idle. I tried spraying the IAC valve with no improvement. When I get the car to run I hear a hissing noise from the top of the engine but I'm not sure if that's always been there. Any ideas for what I should check next? I changed the fuel filter about 2 months ago, and I'd be surprised if it was a fuel pressure/fuel pump issue because the car runs if I hold my foot on the gas. Maybe a hose somewhere? Thanks in advance for your help!

 

[energie]

On my old 1991 ex the vaccum line hose kept slipping off and that caused sputtering, rough idle, adn then eventually died. check those hoses maybe.

 

[chapsdeva]

Cleaning the IAC does not always work. Mine had similar symtoms and after cleaning the IAC didn't work I ended up replacing it....problem solved! You may first want to try cleaning your MAF sensor (Use MAF cleaner!!!).

 

[Z3NYC]

Thanks...it ended up being a rotted out vacuum hose connector once I took everything apart.