Going back to the OP, I'd be *BLEEP*ed they made you spend $180 and didn't even bother to check to see if the problem went away.
2nd - a "kinked" fuel line? How is that even possible unless the car was rolled or crashed? The mechanics are FOS. I'd also demand a refund on the labor for the last job- if they didn't even bother to check to see if it's fixed it's because they knew it was gonna come back anyhow.
Don't pay for a bad diagnosis.
Frankly, I'd tell them you're out of money and want to tow it away. Shops are in the habit of creating false problems to fix. Tell them you are "flat broke" and can't afford the quote so you'll just have to stumble the car out of there.
I'll be willing to bet they'll magically "fix it" for a lot less.
Also to the guy with the bad IAC valve? $700? Hell no. Also, Hell no on the injector cleaning, you won't see a difference.
It's like 2-3 screws to remove, and replace., and like no time to remove and reinstall. You are getting screwed, and screwed bigtime. Even if the part itself was $600 (it's not) it's still huge labor...
Here's a "How to"- You can do this on the way to work, it's that quick to do- definitely not worth $700
http://www.clublexus.com/forums/performanc...trol-valve.html
Start telling the service writers you're broke, and tell them the car will have to wait. Amazing how much you'll save doing that.
These stories are the EXACT reasons I learned to work on my own stuff. No issues like this, ever.
Hate dishonest mechanics...
rjp