I have 78k miles on my 07...bought it in for the usual oil/filter/lube service on Tuesday. Drove straight home from there. Wednesday I start it up...it beeps just after startup and the dash display says "gascap". Since I didn't touch the gas cap at all between the service and me starting it, I figured someone at the dealer knocked a vacuum hose loose when servicing the jeep or something. I reseated the cap, and it still beeped at me. I didn't see anything obviously disconnected or loose under the hood.
Yesterday I took it to the dealer, who said "uhh we think it was a loose gas cap...Did you tighten it all the way?" Sure, and explain to me how it got loose when no one touched it? But anyway...
They said they plugged in a vacuum tester and there was no vacuum leak, so they assumed it was just a loose cap, and left it at that. They did say however that it was NOT throwing an error code at the computer.
When I picked it up at the dealer, it didn't bong at all.
This morning, I started it...yep, it bonged.
Before I shove the gas cap down someone's throat at the dealer when they ask me if I was sure I put the gas cap back on (never mind that I haven't touched it), does anyone know where the sensor is for this? A quick google for it doesn't bring any useable results :/
Since I didn't touch it and since they say there's no vacuum leak, I can only assume the sensor's gone bad...
Hi. I know you posted this a while ago. But I currently have the same problem with my jeep, which is an 07. I currently have about 95000 on it. The gascap light showed up followed by the check engine light. They did a smoke test then told me it was the gas tank neck, repleced it and the problem showed right up again. Now they say it is some senor. I was wondering what your problems was.
I had it happen on my '07. I replaced the cap and cleared the code & still came back. Turns out it was the little sensor that goes into the evap canister. If I remember correctly it was pretty cheap to replace and easy to get to... at least with a 4" lift & 37's
Got it when I put a hole in my Evap Can. After I fixed the hole I had a few starts before it cleared the error. If your cap wasn't only all of the way it takes a few starts to clear it, otherwise there’s probably still a problem, somewhere...
2008 Rubicon - 2 Door - Flame Red - Automatic - MyGIG - Power Group - Deep Tint.
AEV Pintlers, BFG KM2s 35x12.50x17, Bulldog Fab Stubby Bump, Currie F/R Adj Trac Bars, Daystar Upper Dash, FireStik FireFly antenna, Kilby Rear Shock Skids, LoD Sig Stubby Bump, Midland 75-822 CB, Mopar Filler Door & Locking Gas Cap, Rancho LCA Skids, Rancho Oil Pan Armor, Riddler Diff Covers, custom Rubi Sliders, Sylvania X-treme Headlights, TeraFlex 2.5" Spring Lift, Warn PowerPlant HD, Woods Evap Can Relo, Woods SS Relo, Yukon 5.38s
I'm currently having the same problem. 9-1-1 help. My warranty is over and I can't pass smog because the system is reading the check engine light on code. Right now the gascap light is on & check engine light due to evaporative emission system leak ( small ) and exhaust gas recircuation ( high ). Which is the cheapest & quickest route? Change gascap, if it doesnt work? Smoke test?
2007 JKU Rubicon, RK 5.5 X Factor Plus System with RK 2.0rr's, 37" MTR's, Poison Spyder trail cage, Crusher Corners with LED lights, R-SE Step Sliders, JRC Dagger Tire Carrier Bumper, PCS box and ram, D44 sleaved-trused 5.13's, ORO sway locks and Currie 1" rear.....etc LC9 and 6l80e waiting to be installed
I pulled off the O-ring from the gas cap, cleaned the O-ring and the top of the filler tube with methyl hydrate / methanol, lubricated the O-ring with Seal Saver (a lube for latex/rubber seals), flipped over the O-ring, and put it back on the gas cap. Problem solved. My guess is that the O-ring had dried out and flattened out over time, such that it could no longer keep the pressure seal. Once the other side flattens out, I'll replace it. 2007 JK.