ford141
Member
- Joined
- Apr 15, 2014
- Posts
- 40
- Reaction score
- 12
I really need some help with my 99 Yukon. My in-laws gave this to me 3 years ago with 228k miles, I've ran it up to 253k. Original motor, but trans was replaced.
The whole time I've had it I've experienced a problem with it dying at the top of a very long hill. If I have to pull a hill any longer than about 1/4 mile, it will start missing and shaking and will unlock the torque converter. The only code that shows up is a random misfire. I've replaced fuel pump (3 times), plugs, wires, complete distributor, tps, and upgraded to the better injector unit. But the problem continues. About 2 months ago I replaced the crank sensor, which seemed to solve the problem for a few weeks, but it came back.
I'm at my wits end with it. I love this truck and I can't afford another right now, so I have to rely on it. But I'm in pa and it's hilly here, and long hills will kill it. If I let off the gas it will come back after a few seconds.
I've monitored fuel pressure while driving and it stays consistent even when the misfire starts.
No catalytic converters, so the rear oxygen sensor throws a code all the time, but it did it before the cats were gone too.
Please help!
The whole time I've had it I've experienced a problem with it dying at the top of a very long hill. If I have to pull a hill any longer than about 1/4 mile, it will start missing and shaking and will unlock the torque converter. The only code that shows up is a random misfire. I've replaced fuel pump (3 times), plugs, wires, complete distributor, tps, and upgraded to the better injector unit. But the problem continues. About 2 months ago I replaced the crank sensor, which seemed to solve the problem for a few weeks, but it came back.
I'm at my wits end with it. I love this truck and I can't afford another right now, so I have to rely on it. But I'm in pa and it's hilly here, and long hills will kill it. If I let off the gas it will come back after a few seconds.
I've monitored fuel pressure while driving and it stays consistent even when the misfire starts.
No catalytic converters, so the rear oxygen sensor throws a code all the time, but it did it before the cats were gone too.
Please help!