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Recently on the way back home from an out of town trip the Yukon started to climb a mountain pass and the engine started losing power. I was traveling at 75 mph and it starting dropping speed.
It was as if it was laboring to climb. I pulled over, checked the trans. fluid level and it was good. I waited awhile to let the vehicle cool, restarted and continued my trip home.
The vehicle ran o.k for awhile, maybe 15 minutes, but started losing power again, this time on flat roadway. I pulled over, opend the hood, let it cool again and while I was waiting I noticed a small filter attached to the Air filter compartment and it was orange, the instructions on the filter said that if the color turned orange it was time to change it.
Could this of been the problem? I was now in the city and the vehicle ran o.k at city speeds ( 35 mph ) , but still hesitates to shift up when pulling out from a stop sign or stop light.
I also have to mention that the vehicle has never given me problems on trips so this is puzzling.
I have the same problem on long trips. After 4+ hours of pulling a trailor I experience progressive and gradual power loss until the engine is struggling to maintain 50MPH on level ground. Last year, I had to climb two hills one was south on I25, Raton pass New Mexico and I17 Southbound Camp Verde hill, Arizona. Both hills brought my speed down to 20 MPH and the engine was struggling.
Gas was full, no warning lights, acted like it did not have adequate gas going to the engine. Had new gas filter, new air filter, changed out all lubricants, engine - transmission - rear end.
Seems to run ok other times - only does it after many hours of road mileage. First thing in the morning, it will pull the world at 80MPH. Once it loses power, I can pull over for 10 min and it will have power again for 1-3 hours.
I know the camp verde hill of which you speak , last vehicle in the shop with that same scenario , after doing everything possible including a catalyst check , as we could not duplicate the problem , we replaced fuel pump at owners request and next trip he confirmed it was a fix .
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I got this, and it was a failed trans shift solenoid no 1. This rendered the trans unable to find low gears. However there should be a trouble code notified by a light on the dash.
it could be as simple as a solenoid in the transmission or a mechanical issue best to find a friend that works at a shop and maybe they can give you a break on the diagnostics
A few ideas. 1) Try the motor home where you are now and see. Find some REALLY steep hills or something and try it out. 2) If it is an automatic transmission, you may need to purchase a "transmission cooler" kit to add on before you try mountain climbing. 3) If it is a stick shift, take along another clutch disc and pressure plate and throwout bearing in case you burn yours up. 4) And remember, cars and trucks that normally operate at sea level will not do well in high mountains. They need to have the timing and/or carburetor set for high altitudes. 5) Many countries outside the USA have different octane ratings on their gasoline, you will need to take along the stuff to set your engine to the octane rating of the gas you buy. Be blessed
in the first place you must change the filter and the transmission oil in your automatic gear box , if the problem persists and your gear box shift not the gear for climbing hills it is a tehnycal problem with your gear box , but in my opinion ( i had a similar problem with my car ) this is the only problem. God help You ! Sorry for my English !
Yes. The DEFAULT is on. If you turn it off, it will turn back on if you turn the ignition switch off and back on again. The only reason you would want it off is if you are towing a trailer. In this case, you must turn it off each time you turn the ignition switch on to prevent transmission damage.
The only other time you would want to turn it off (towing or not towing) is if you are climbing a LONG STEEP hill - like in the mountains, and the transmission is shifting in and out of overdrive continuously.
Does the trany fluid smell burnt? Might want to have the trany flushed - torque converter too - and replace the filter in the trans. FYI you may know this but it is not recomended that overdrive be enabled when pulling a trailer - especially a heavily loaded one. Does your town have lots of hills - this is an added stain on the trany.
That orange signal is telling you that your air filter is almost clogged up and the engine is not getting enough air to run porperly. By all means change your air filter. Depending on dust conditions that you drive in, this should be changed every 18 months or so.
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