gas cap?

[95SLOW5.0]

i was pumping gas the other day and well i noticed i still have my original gas cap witch is like 14 years old..does the cap affect fuel pressure? wut is its role? anybody?

 

[MustangChris]

a faulty gas cap can cause the MIL to turn on. i suggest going to autozone or Ford and getting a new one, maybe a locking one at that...

 

[CC'S95GT]

every year when I have to get my car smogged they also test the gas cap. As far as I know it's still the original one. still good with 170,000 miles.

 

[Ford Tough]

The gas cap on our cars will not cause the MIL to come on. They do not have a evap system.

 

[MustangChris]

The gas cap on our cars will not cause the MIL to come on. They do not have a evap system.

my mistake. I was going off information the guy at pepboys gave me about 5 years ago. I didnt know why/how it would make the light go off, i just figured it was the way cars opperated.

 

[DFG_magic]

True, the tank isn't monitored for escaping vapors like the OBDII cars. A loose cap won't trigger the CEL on OBDI cars. (94-95's) But on 96's and up, Chris, you are correct!

 

[GREG@SN95]

Why would you replace it? If there's nothing wrong with it leave it alone...

 

[NVH]

wut is its role?

It keeps gas from evaporating or sloshing out of the tank.

 

[x182dan]

yup they test the cap here in ct for emissions even though I dont think it matters for our cars