- Joined
- Jun 1, 2020
- Member Number
- 1740
- Messages
- 314
I have an 08 Yukon with a 6.2 in it, about a year ago while driving up I70 into the mountains it shut off while coasting down a hill, it started back up after pulling off to the side and hadnt had an issue since.
Today while pulling up I70 to the Eisenhower tunnel it died again while coasting to a stop, went to push on the gas and nothing, just dead. This time it would not restart, so CDOT pulled me off to the side where I pulled relays fuses and pounded on the fuel tank thinking it was the fuel pump, and popped the gas cap on and off just out of habit.
It would crank and ever so slightly kick, but not take off. I then pushed in on one of the shrader valves on the fuel rail and had plenty of fuel coming out, making me believe the fuel pump was ok.
After sitting for about 45 minutes it started to try a little harder to start and after 10 or so attempts finally started and ran fine.
I drove it 100 miles home with no issues until I got of the highways, whenever you would slow down and come to a stop for a light it would pull down below 500rpm and nearly stall, then have very poor throttle response until it got above 1000rpm. I started popping it into N at lights and keeping the revs above 1500rpm which seemed to keep it alive.
When I got home I came to a stop and it about died when getting into the garage so I popped it in N and just let it try to idle thinking something in the trans was the issue, but it just surged around 4-500rpm, when I gave it some throttle it stumlbed really hard and struggled to climb about 1000rpm, but once it did it ran fine.
There were no active or stored codes on it. I was thinking fuel pump or pressure regulator, but I am not very convinced thats my issue. After sitting for a few hours at home it runs fine now and I cant repeat any of it.
Today while pulling up I70 to the Eisenhower tunnel it died again while coasting to a stop, went to push on the gas and nothing, just dead. This time it would not restart, so CDOT pulled me off to the side where I pulled relays fuses and pounded on the fuel tank thinking it was the fuel pump, and popped the gas cap on and off just out of habit.
It would crank and ever so slightly kick, but not take off. I then pushed in on one of the shrader valves on the fuel rail and had plenty of fuel coming out, making me believe the fuel pump was ok.
After sitting for about 45 minutes it started to try a little harder to start and after 10 or so attempts finally started and ran fine.
I drove it 100 miles home with no issues until I got of the highways, whenever you would slow down and come to a stop for a light it would pull down below 500rpm and nearly stall, then have very poor throttle response until it got above 1000rpm. I started popping it into N at lights and keeping the revs above 1500rpm which seemed to keep it alive.
When I got home I came to a stop and it about died when getting into the garage so I popped it in N and just let it try to idle thinking something in the trans was the issue, but it just surged around 4-500rpm, when I gave it some throttle it stumlbed really hard and struggled to climb about 1000rpm, but once it did it ran fine.
There were no active or stored codes on it. I was thinking fuel pump or pressure regulator, but I am not very convinced thats my issue. After sitting for a few hours at home it runs fine now and I cant repeat any of it.