Question about 1999 Chevrolet Tahoe

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Losing power going up long hills it has to be a long one otherwise car runs fine could it be the torque converter or something else

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  • Anonymous Mar 27, 2014

    1998 blazer torque converter does not lock up in overdrive. The trnsm,ission is smooth operating and works fine otherwise.

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When was the last proper tune up? if it is losing power under load (probably misfiring) wouldn't that be the first thing to look at?

Posted on Aug 24, 2009

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Do you have a K/N filter. The oil could be coating the MAF sensor wires. If so use brake clean or MAF cleaner from the auto parts store or just replace it. Being a 99 its got some good usage allready if it has'nt been replaced yet. Also pay attention to the temp when climbing. As the engine starts overheating you could develop a ping. Also low grade fuel could cause a ping and when this happens the engines timing will ****** and you will have less power. The computer retards the timing in order to protect the engine. Next trip use high grade.

Posted on Jul 14, 2009

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Depending on mileage you could have a cat problem. Have the exhaust back pressure checked when the cat is fully warmed up. It may be the cat overheating on a long grade.

Posted on Jul 14, 2009

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2001 mazed tribute runs good no power to go up hills ?


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2005 Ford Focus losing power on hills. This car just moved from Winnipeg Manitoba canada to guelph ontarion canada


Hello and welcome to FixYa!
I strongly suggest that you replace the transmission fluid. If the fluid is burnt it tends not to shift properly that's why it losses power on hills. If the fluid is good then It has to be a faulty torque converter. Torque converter controls the shifting of the vehicle that when it's faulty it will surely run sluggish.
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Loud whine then knock in overdrive


well, without hearing the noise myself, i could guess that the torque converter clutch might be going bad. the torque converter is the part that transfers the power from the engine to the transmission via viscous fluid motion, the converter also has a clutch that internally provides a direct connection inside the converter for better fuel economy. but as with anything labeled as a clutch, it wears down to a point where is slips. the noise your hear could be the torque converter clutch slipping. i owned a 90 astro van with the same drivetrain that made a noise similar to what you speak of up hills. while driving up hills, fully depress the accelerator and if the clunking noise occurs, then the whine goes away as you accelerate faster in a lower gear, very likely this is the case. you would have to have a transmission shop diagnose further. i drove that old van for five more years cause i didn't want to pay to have transmission repaired. it can be very expensive.

Jul 08, 2010 | 1992 Chevrolet S-10 Blazer

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I changed spark plugs and car still misfires and loses power when frist taking off and when going up hill it's a 97 mercury sable. what else could i do?


i bet your spark plug wires are bad. Arching is occuring (when the spark doesnt get to the plug) Probably because of old cracked wires

Jul 28, 2009 | 1997 Mercury Sable

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Car looses power up a hill


How slight was the hill and how much weight did you have in your car? When you got power back was it because you were no longer on the hill or were you going downhill?
You may just need to drop down a gear to get the power back, if you have a heavy car even slight hills can cause it to lose power especially if your in top gear. You have a "sports transmission" option (I'm pretty sure it's on all the DSG transmissions) you just need to move it across to the +/- bit and move the stick to the - to go down a gear. Otherwise you'd have to wait until your auto decides it's lost enough revs to go down a gear. Which is why I hate autos.
Otherwise it could be bad fuel or something wrong with the turbo.

Apr 07, 2009 | 2006 Volkswagen GTI

1 Answer

Losing power up one particular long hill


It sounds like a tranny problem. Without more info kinda hard to diagnose. The simplist thing to check is tranny fluid. If its low, going up a hill will pull fluid out of the torque converter. It could be the converter itself. It could possibly a fuel problem, but unlikely. Hope this helps. John...

Jan 10, 2009 | 1993 Subaru Legacy

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1993 Ford Tuarus Gl IN NEED OF HELP!


Well this could be in your timing. As cars get some miles on them the timing chain stretches therefore causing you car to lose alot of power.So you may want to have your timing set on this car. Also I had a taurus that had a bad torque converter, and it lost alot of power on hills and under loads, also when i gunned the gas pedal. so try the timing first. Hopefully you dont have a bad head gasket or a cracked head these symptoms you are describing are all signs of head gaskets or blown heads

Sep 02, 2008 | 1993 Ford Taurus

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NO POWER / SHUDDER


Is it a standard or automatic transmission? If standard, your clutch may be slipping. While driving down a straight road, push the brake while still in gear and push the gas pedal as well. If the engine slows with the vehicle, the clutch isn't slipping. If the engine speeds up while the vehicle is slowing down, the clutch is slipping.
If it is an automatic, check the transmission fluid. You may be low and the transmission is slipping while under load, or the torque converter is slipping for the same reason. You may have a bad torque converter clutch switch, but the computer should have picked that up and made your "Check Engine" light come on.
These are the main reasons you would be losing power going up hills unless your engine isn't powerful enough to handle the larger tires on extreme hills. (It takes more power to turn a larger wheel going up hill since the vehile has to travel further for each revolution of a larger tire. Incidentally, have your speedometer checked. You will be going faster than what the speedo says since you put larger tires on.) Good Luck.

Aug 19, 2008 | Volkswagen Golf Cars & Trucks

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