97 mitsubshi daimante gdi. Lack of power up hill.

In general, poor starting is due to incorrect mixture of fuel & air in the cylinder or lack of a spark.
Check the condition of the spark plugs or change them if they have not been replaced for some time. Check the air meter is functioning & the air filter is not excessively blocked. If engine fires but will not run up, this is likely to be the idle control system, check for air leaks in the air path and the idle control valve is working. Start with a slight press of the accel pedal & see if it help to raise the idle during crank & run up, if it does help, it points to idle control valve or air leak.

Difficult question to answer directly. There's a pressure regulator on the end of the fuel rail that's set to around 35 psi. The fuel pump can deliver more than this of course, but the regulator is there to return excess pressure to the tank. Perhaps your problem is the fuel pump or the MPI relay which is usually behind the center console.

have the fuel pressure checked as it may be too low at accelerator opening. run fault codes to check for faulty MAP/MAF/VAF sensors.

I had a similar problem with one of my vans. My problem was a clogged fuel filter. It was a result of water in my gasoline tank.

if it shakes and smells of rotten eggs, then the catylitic convertor is bad. driveability symtoms are--- lack of power, drop in fuel economy, lack of high speed power, rough idle or stalling are the symtoms of excessive back pressure. due to a plugged up convertor. it should be diagnosed by a mechanic to verify this.

I would change the fuel filter anyway. Fuel filter problem manifest under a load usually. It is easy to do and cheap. This will eliminate one possible cause for your lack of power. Another reason may be your timing. If it pings going up hill also, you can ****** the timing a couple of degrees and/or try some fuel additive or higher octane gas or octane booster.

There's a few things I'd take into consideration. As stated in other posts, yes make sure transmission fluid is up to proper level. Also, depending on what engine you have, there may be an electric assist pump or even 2 in the system. On some, they have an electric pump to circulate coolant through heater core at idle to maintain proper heat , as well as another to assist mechanically driven pump when coolant temperature gets to approx 195F. Obviously when going up hills there is an added continuous load on engine, which will cause it to run hotter, thus I would expect that electric pump to be kicking in, and if not, may be the cause. Also the added load of climbing hills, creates added exhaust temperature, and if there is any restrictions, the results would be overheating. Quite often you may feel at least a little lack of power compared to what it used to be, or an increase in fuel consumption, or both when exhaust has a restriction. With that said, a weak water pump is also a possibility. Hope this sheds some light on what to pay attention to.

idle control valve. bad plug wires and bad plugs will all cause that as well as a air leak in the vacumn hose on galant

You're going to have to figure out what's causing the misfire. The car is almost 10 years old, so change the plugs to start with. If you still have a misfire, go to auto zone and have them pull the codes to find out which cylinder is the issue. Then figure out fuel or spark? Coil or injector? Was there a lean code? Check for a vacuum leak. Change the fuel filter and air filter for maintanence. The cruise control may be another issue.

check the timing chain for slop