WHY?
Thread Starter
4th Gear Member
Joined: Aug 2006
Posts: 1,516
From: NYC
WHY?
I was at the gas station yesterday filling up so I decided to test the vehicle check system (or whatever it's called). I left the gas cap off and then went in my car to do the test and it said my fuel cap was "OK." Why? It was obviously off.
2nd Gear Member
Joined: Sep 2006
Posts: 174
From: Massachusetts
RE: WHY?
There's no little button like on your door or trunk to tell the computer your gas cap is off, it can tell that the cap is off by the change in pressure (or lack thereof) in the fuel system. You need to have the motor running and even then it won't be instantaneous.
2nd Gear Member
Joined: Oct 2006
Posts: 223
From: Utah
RE: WHY?
ORIGINAL: saltzy
There's no little button like on your door or trunk to tell the computer your gas cap is off, it can tell that the cap is off by the change in pressure (or lack thereof) in the fuel system. You need to have the motor running and even then it won't be instantaneous.
There's no little button like on your door or trunk to tell the computer your gas cap is off, it can tell that the cap is off by the change in pressure (or lack thereof) in the fuel system. You need to have the motor running and even then it won't be instantaneous.
Well said!