Loss of Power

christine2000 · 07-20-2007, 02:07 PM

I have a 2001, I just drove it to 2000 miles on vacation and while going up a mountain in Oregon the engine cut out and lost power. It was all it could do to pull itself off the road. The engine would run but would not go over 1900 rpms with limited power. I shut it off and when I restarted it it ran fine but the check engine light was on. It ran fine and when I shut it off again the engine light went off when restarted. When I drove it the next day it did the same thingnwhen I was going up a steep incline. I took it to the dealer and they said it had a code P0098 and they changed the fuel filter. When I left to come home it kept doing the same thing and I would shut it off, restart it and it would run ok until the next incline unless I kept it under 1900 rpm then it would continue running. I got it home and checked for codes and there were none. Any suggestions? I'm afraid to drive it to far after driving it back home that way.

**ob_1jr** · 07-20-2007, 02:42 PM

When is the last time you changed your air filter? The P0098 is Intake Air Temperature (IAT) Sensor 2 Circuit High Voltage. The dealer should have checked IAT sensor, but it could be that too.

christine2000 · 07-20-2007, 03:04 PM

The air filter was changed right before I left on the trip.

**ob_1jr** · 07-20-2007, 04:05 PM

You could have gotten some bad fuel. I would have a dealer check the IAT sensor to see if it is good. Other than that, It sounds like a bad fuel filter or something with the tranny going into limp mode. Are you sure they changed your fuel filter....some dealers aren't the best. When is the last time the tranny was serviced? In particular the spin-on filter.

christine2000 · 07-20-2007, 04:25 PM

I read the service ticket wrong, it was code P0093. The fuel filter was changed by the dealer before I left on the trip along with the injectors due to a recall but I didn't look to see that the filter was really done. They did change it after the problem 200 miles into my trip. The next time it happened was about another 300 miles into the trip on the first mountaim incline. I serviced the transmission and changed the filter right before the trip. My fuel mileage was eratic on the trip ranging from 15 mpg to 20 mpg getting the better when in the worst terrain.
Thanks for your help,

sweetdiesel · 07-21-2007, 03:24 PM

possible bad fuel in the tank need to change the fuel filter again

possible that you keep loosing fuel pressure due to a weak FRPV

due you have a chip or programmer?

christine2000 · 07-21-2007, 06:27 PM

I ran through 4 tanks of fuel coming back and as long as I kept it below 1900 rpms going up hill it did fine. On normal terrain if I push it hard it takes off fine and never hesitates. But if I go up a extended incline over 1900 rpms it hesitates and then goes into limp mode. I don't have a chip or a programer. It seems to me to be a fuel supply problem but I don't know why it would only do it on a incline.
Thanks

rollincoal · 07-22-2007, 03:46 PM

Is there a lot of black smoke comming from the tail pipe? If so it sounds to me like it could be an injector(s). That could be a serious problem too! Injectors can cause a cylinder melt down and you don't want that.

Chevy had a recall on injectors for a year or two, and the symptoms that you explain sounds like it could be a possibility. You shouldn't drive it too far until you figure out for sure its not the problem!

**ob_1jr** · 07-22-2007, 04:39 PM

Another thing, if you have a lot of black smoke, it could be the waste gate blowing open and you would have problems holding speed. How does the oil look?

benihana53 · 09-13-2007, 06:26 AM

I am having the same problem. I also have a 2001. Although mine will do it on flat terrain to. I thought it was bad fuel and have changed filters, but it keeps doing it. I also replaced the two rubber fuel hoses that attach to the fuel filter assembly. That didn't fix it either. I drove it yesterday while it was doing it and checked the codes and there were 2: P0093 & P1345. I am stumped. I wish some one could figure this out. The truck has 120000 miles , but it had the motor replaced at 75,000 and it was sort of doing the same thing before they had to replace the motor. Now the warranty is out of date and I don't want to buy a motor.