"CHECK FUEL CAP" dash light?

sweet99 · June 16th, 2007, 07:25 PM

OK, I have this light lit on the dash of my '99 GT and canot figure how I got it nor how to delete it!
I was told by a Ford tech I must have added fuel with the car running. Not likely but could have added an additive with it running. I noticed it after I changed the coolant to a non-antifreeze type for summer use, could that have affected anything, seems unlikely? I have NO CEL's and the car runs fine except for this one problem. If there was a small leak in the EVAP system I would get a CEL! Could the charcoal canister be plugged? I have added octane boosters a fedw times but not around the time the light came on so any suggestions? Thanks, mark

stanglifemike · June 16th, 2007, 07:34 PM

Could just be that you tightened the fuel cap on a little cooked and wasnt a tight seal. Check the cap, make sure its on straight and tight then clear the code with a handheld or have a parts store do it for you. If it comes back on then you have a prob but my guess is that it won't

Wildsteeda · June 16th, 2007, 10:56 PM

mine did the same thing and it was the rubber seal that is used to seal the fuel tank to the fuel inlet hose/pipe what ever you want to call it that you put the gas nozzle in when you fill up. just buy a new seal and replace it takes about 30 minutes and is a bitch to pop in.

40thmustanggt · June 16th, 2007, 11:15 PM

mine did the samething when i first got it i turned the light off 2 times then i just bought a new gas cap and i bought a vented one not thinking.. so then the cel came on with a large evac leak went back bought a non vented gas cap problem solved.. so i would get the light turned off and then if it come's back try a new gas cap..

tlr96 · June 17th, 2007, 01:18 AM

yeah that most newer cars have that nowadays, its either ou dont have it tight enough or you need a new one cause the seal is bad.

01whitecobra · June 17th, 2007, 02:47 AM

Mine did it for the first three weeks that I had it and then it stopped. All that I did was pull the neg cable off to let the comp reset and it cleared it.

neckbonekat · June 17th, 2007, 03:51 AM

Originally Posted by 01whitecobra

Mine did it for the first three weeks that I had it and then it stopped. All that I did was pull the neg cable off to let the comp reset and it cleared it.

+1
That is the quickest way to clear the code or you can leave it and the next time the car runs through it's cycle it will clear.

June 16th, 2007, 07:25 PM	#1
sweet99 Regular Join Date: Nov 2006 Posts: 201 iTrader: 0 reviews	"CHECK FUEL CAP" dash light? OK, I have this light lit on the dash of my '99 GT and canot figure how I got it nor how to delete it! I was told by a Ford tech I must have added fuel with the car running. Not likely but could have added an additive with it running. I noticed it after I changed the coolant to a non-antifreeze type for summer use, could that have affected anything, seems unlikely? I have NO CEL's and the car runs fine except for this one problem. If there was a small leak in the EVAP system I would get a CEL! Could the charcoal canister be plugged? I have added octane boosters a fedw times but not around the time the light came on so any suggestions? Thanks, mark __________________ '99 Convertible. 4.10's, PYPES catted X-pipe and catback. UDP's. 75mmBBK TB/plenum. JLT CAI. UDP's, Brenspeed custom tuned SCT. SVO intake & SHM cams this winter! Lord willing.

June 16th, 2007, 07:34 PM	#2
stanglifemike IBEATU 06 GT, 98 GT, & 93 Notch Join Date: Dec 2006 Location: Douglasville, GA Posts: 5,937 iTrader: 0 reviews	Could just be that you tightened the fuel cap on a little cooked and wasnt a tight seal. Check the cap, make sure its on straight and tight then clear the code with a handheld or have a parts store do it for you. If it comes back on then you have a prob but my guess is that it won't __________________ 98 GT: some stuff 06 GT: more stuff 93 Notch: 4 cyl at birth, now 5.0 drivetrain and stock exterior and interior= True Sleeper Paxton/Vortech Crew Member #3 FRPP's #1 Dealer Injected Engineering BMR Suspension

June 16th, 2007, 10:56 PM	#3
Wildsteeda Regular 1999 Mustang GT Join Date: May 2007 Location: Fort Riley Posts: 124 iTrader: 0 reviews	mine did the same thing and it was the rubber seal that is used to seal the fuel tank to the fuel inlet hose/pipe what ever you want to call it that you put the gas nozzle in when you fill up. just buy a new seal and replace it takes about 30 minutes and is a bitch to pop in. __________________ Mamma I wanna go FAST!

June 17th, 2007, 01:18 AM	#5
tlr96 Hardcore Enthusiast 1996 Mustang GT Join Date: Mar 2007 Location: Effingham, IL Posts: 1,796 iTrader: 0 reviews	yeah that most newer cars have that nowadays, its either ou dont have it tight enough or you need a new one cause the seal is bad. __________________ view my garage for pics and modifications listen to my exhaust video 1 video 2 video 3

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June 16th, 2007, 11:15 PM	#4
40thmustanggt Hardcore Enthusiast Join Date: Jun 2007 Location: southcarolina Posts: 1,270 iTrader: 0 reviews	mine did the samething when i first got it i turned the light off 2 times then i just bought a new gas cap and i bought a vented one not thinking.. so then the cel came on with a large evac leak went back bought a non vented gas cap problem solved.. so i would get the light turned off and then if it come's back try a new gas cap..

June 17th, 2007, 02:47 AM	#6
01whitecobra Regular 2001 cobra Join Date: Mar 2007 Location: Oklahoma Posts: 176 iTrader: 0 reviews	Mine did it for the first three weeks that I had it and then it stopped. All that I did was pull the neg cable off to let the comp reset and it cleared it.

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