MARK3 ,sometimes hard to start, idle rpm not stable.

cre · 02-16-2010, 02:15 AM

There's a valve in the heater line on the passenger side. It's mounted on the firewall by the charcoal canister. Follow the heater hose from the firewall to it. There's a VSv with a metal bell with a lever that runs to the valve. Run the vacuum line which runs along the firewall to the VSV straight to the bell and see if the lever moves up. It's a common failure point. I'll see if I can find a diagram.

Here you go:

02-16-2010, 02:15 AM	#16
cre Toyota Racing Development Join Date: Apr 2007 Posts: 5,038	There's a valve in the heater line on the passenger side. It's mounted on the firewall by the charcoal canister. Follow the heater hose from the firewall to it. There's a VSv with a metal bell with a lever that runs to the valve. Run the vacuum line which runs along the firewall to the VSV straight to the bell and see if the lever moves up. It's a common failure point. I'll see if I can find a diagram. Here you go: __________________ If something breaks or you need to contact a member of the administration please post HERE. Unless it's a private or administration matter please post it on the forum. It benefits no one else if car related questions aren't posted for future users and takes away from the time I'm able to spend helping on the rest of the forum. If you're so inclined I'm always more than happy to accept tips via PayPal. Tip Jar ---> Last edited by cre; 02-16-2010 at 02:18 AM.