Quote:
|
Originally Posted by smokey2006
My 2001 Buick Lesabre has been given me a mesage that says gas cap loose check gas cap. The gas is on tightly and does not appear to be loose. Could this mean I need to purchase a new gas cap
|
Inspect the rubber seal where the gas cap makes contact with the filler neck. I've treated mine with vaseline a couple of times when the seal didn't work. Also check the top of the metal filler tube for roughness so that the rubber doesn't seal well enough. The gas cap seal is the easier and first thing to check. Always start with simplest solution--the KISS method.
Remember if you reseal the gas cap the car doesn't do a vacuum test every time it starts. It only does it when the coolant is between two temperatures--a lukewarm restart. So if you fix the problem, the light may not go out for a while if you drive the car from A to B and then park so it's a cold restart the next time you go from B to A--like at work for 8 hours.
So don't assume the cap doesn't fix it until you've given the computer a chance to retest for seal when it pulls a vacuum. Mine could be driven 4-5 miles on cool morning, stop for coffee at a Speedway, and then on restart it would check and turn the light on or off. Every time on that car it turned on or off at the same gas station.
The check pattern I've cited is for a 98 LeSabre from the FSM. I expect the current models are programmed the same way for EPA standards.
Show Printable Version | 
Subscribe to this Thread
11-30-2006, 05:57 PM
