May be I have to make my problem clear. The car goes ok when I drive it on plain roads. But moment comes to up hilly roads car loses power and almost stall. it makes only very tardy slow move up hill.

SOURCE: 2002 sequioa sudden stall

Often when the battery is disconnected or replaced the computer will lose it's learned idle settings. You could try letting the engine idle in park until the engine temperature comes up to normal and leave it like that for a few minutes, then put the Air con on and let it idle again for a few minutes, then switch the air con off and put it into drive. If it does not stall, let it idle in drive for 2 minutes or so, and then do the same with the Air con on. This should relearn the base idle settings and stop it from stalling on you. Before you carry out this procedure you should make sure that when you replaced the battery you didn't remove any other plugs or knocked anything that may be causing the fault. If you try this procedure and it still stall when you select drive, you will need to get a Mechanic to check the vehicle over.

Hope this helps,
Mark.

SOURCE: loses power on steep grade

Sounds like you need a clutch replacement.

Try this. Go somplace where there are no cars, and no possibility of running into anything. Stop the car. Set the park brake. With the engine running, put the vehicle in 1st gear. Hold the foot brake pedal, and give it gas, and let out the clutch slowly.
If the engine does not stall real quick, the clutch disc is bad.

SOURCE: 1986 Toyota 4x4 Manual transmission

May be a bad rear end, Gear in rear may be broken check rear. Good luck and thanks for using FIX YA

SOURCE: decellerates while going up hill

faulty maf sensor,bank 1 lean (get new maf sensor and use 89 oct or above fule

Dar

• 2007 Answers
• Posted on Jun 07, 2009

SOURCE: when car sitting in idle the engine management

Try changing the fuel filter.