I wouldn’t really call this an issue, but something that puzzles me.

So, if I go to the pump to fill up, (from half a tank for reference) it fills up to about 9 gallons, stops the pump, but after that, I can continue filling it up for an extra 2-3 gallons after it clicks. Sure, it clicks like it’s full, but i’ve never actually had it overflow on me. I don’t think this Jeep had EVAP since it’s obd1, so maybe this is normal?

 

Do you fill up on the slow speed or the fast speed?
I always fill slow and figure on fast it splashes back when it gets to a certain point making it click off thinking it is full.
But 2 or 3 gallons after the first click seems a bit much in that scenario so.....

 

You are probably pushing quite a bit more fuel than you should. Try running it to near empty and see how much gas it takes to get the pump to click off. Like Ralph said, fill at the slowest speed on the pump.

 

If your profile is correct and you have a 95 i( or an 85 for that matter)t has an evap control system including a canister (unless of course someone has removed all that stuff) .

Another way to see what emission controls are on a vehicle is to look at the emission label..........

Anyway, jamming the last bit of fuel into the tank can be a good way to flood/saturate the canister....not a disaster but not a great idea. But if you can put in a couple gallons after the nozzle shuts off you just need to slow down.

 

If you top it off to much, the air space in the tank is filled, and the evap system may flood. this defeats the purpose of the evap system. the air space is needed for when the gasoline expands with temperature increase. The gas in the filling station tank may be 40, 50, 60 F (often colder than day time high temp) thus the gasoline when filling is dense. but if hot day, that gas will expand. if air space is gone, in your truck, and evap system flooded, that gas will escape the trucks tank. this can be dangerous, paticularly if you park in a garage with an ignition source.

I have added an extra 2.0 gallons. almost always when on road trips where I will burn off those two gallons in the next 15 minutes of hiway driving. Not much opertunity then for the gas to heat up and expand.

if you over fill too much, and it is a hot day, yes gasoline will burp out, use care.

 

If you have a 20 gallon tank and your at 1/2, thats 10 gallons. But gauges are not 100% accurate. Nor are sending units. So 9 gallons could be correct and the tank really is full. You can keep pumping until you see a full 10 gallons on the pump display, but no more than that because you could very well be a gallon over already. A quick pull or two of the trigger after that perhaps, but no more.

 

Thanks to everyone for the info. I used to fill it up 3,4 gallons past the first click, and after reading the replies, I won’t do that any more. Once it clicks, i’ll do one more and that’ll be it.

Oh, and I do have EVAP. I have the canister and all the lines

 

First time pumping gas?

 

Lol. No. Every car i’ve ever filled up with gas, when it clicks once, it usually overflows after another click or two. Not take 3 extra gallons

 

Is the nozzle bottomed out in the neck or do you like letting it hang out there some? I'd lean this more on just the pump safety shutoff doing its thing from capacity pressure kicking back as you near "full"

 

The nozzle is all the way in there when it clicks. If I keep going, I can let the nozzle be all the way in there and have it click 5 more times with about 3 extra gallons, sometimes more