Going down the road my 91 Eldo just dies. No codes show up. I let it sit for a couple of minutes and it usually starts. Today it did it and it took a while to start. It is as if it is out of gas. It would chug and then die. After 10 tries it started and runs fine. Again no codes. Also when I get gas there is a lot of air pressure in the tank and it blows back when I take the gas cap off. Do you think it is related to my stalling? I have 115,000 miles on her and I did a complete tune up with fuel filter at about 105,000.

Going down the road my 91 Eldo just dies. No codes show up. I let it sit for a couple of minutes and it usually starts. Today it did it and it took a while to start. It is as if it is out of gas. It would chug and then die. After 10 tries it started and runs fine. Again no codes. Also when I get gas there is a lot of air pressure in the tank and it blows back when I take the gas cap off. Do you think it is related to my stalling? I have 115,000 miles on her and I did a complete tune up with fuel filter at about 105,000.It could be as simple as the gas cap not properly venting or it could be something else. I would start by having the cap checked at a trusted smog station, after that, you will want to check the fuel pressure.

Is it pressure or vacuum being released when you remove the cap?

Ths gas cap was tested a couple of weeks ago for the emissions test and the air is definetly blowing out of the tank.