Hi,
The air filter can sometimes be a good place to start, as a slightly blocked/dirty/damaged one can give the car near normal operation on flat roads but when going uphill make it slow right down.
would suggest you try that first. If that doesn't work it could be a faulty/blocked fuel filter or dodgy turbo or slipping clutch or air/fuel mix issue (faulty sensor).
SOURCE: engine looses power going up hill, no check engine light at this time.
How old is the Catalytic Converter, sometimes they will get clogged up and affect performance.
Good luck
SOURCE: 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...
SOURCE: loss of power going up hill
fuel pump is bad. they are under extented warranty from ford. take to dealer and "insist" they change it. there is service bulletin on this, but dealers often play "dumb".
SOURCE: losing power up one particular long hill
I was told to put the entire contents of those very small plastic bottles of injector cleaner into full tank of fuel, it was better after running in 5th gear at over 50 mph it got even better after some redx lead replacement, same type of bottle size...and even better after I changed the air filter, an easy cheap do it yourself job....I live in a country area in England where the car has to pull straight out and up a hill after going around a roundabout...total outlay £20
give ti a go , it can't harm the vehicle, and prob. needs doing anyway...esp. the air filter.
SOURCE: I have a 1999 Subaru Impreza 2.2 Litre
if not skipping and losing power take it to a reputible exhaust shop to check for exhaust flow.. possible stopped up cat. could also be a timing problem
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