Lose power or MPH when climbing hills/grades. Start off at 70mph, usually end up at 50mph. Check engine light on, already replaced air filter, and spark plugs.
SOURCE: Loss of power, transmission not shifting
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 .
SOURCE: No power when under load like going up hills
Your Rpm needs to be high in this little 4 banger makes the most torque at 4000rpm and horse power peeks out around 5600rpm. I own a 95 side kick gotta gear down espicialy if you've put bigger tires on
SOURCE: 1999 legacy outback no power going up hill,new knock sensor
Check your tail pipe for color. If insides are black you are running rich and it all may boil down to an oxygen sensor or an EGR valve. EGR valves are the most common causes for the 'check engine' light to come on. Your trouble codes will tell you what it is. Some auto stores will check it for free or you can buy an inexpensive checker.
SOURCE: missing, loss of power, etc.
sounds from afar like a problem i had after installing after market spark plug cables on a diff. car. make sure you have factory-quality/ even mits. brand cables. (right parts vs. after mkt.?- no contest.)
SOURCE: service engine light is on, and truck has no power
When your vehicle has low power output it can mean several different things are occurring. You should know while your car has low performance it could be damaging components while you drive. Example: The emergency brake is on and you did not notice, this condition will burn up the rear brake pads or shoes and cause premature emergency brake failure. Or, the fuel filter is clogged causing thefuel pump to labor which can cause premature fuel pump failure. There are basically two kinds of low power conditions either the engine is running rough causing low power or the engine is running smoothly but still has low power. If the engine is running smoothly but has low power you are in the right place.
Step 1 - Scan for Trouble Codes - Check to see if the "service engine soon" light is on, if not continue to the next step. If the "check engine" (same thing as a service engine soon light, different manufacturers call it different things) light is illuminated you need to have the computer scanned for trouble codes. Use a simple scanner tool to retrieve trouble codes and check if they relate to the specific problem, like a fuel pump circuit failure code. If a trouble code is present but does not pertain to the immediate problem like an EVAP code ignore it until a later time, after the engine is running properly. The reason we repair non-related codes after the engine is running properly is because sometime false codes can be triggered by a poorly running engine. Once the engine is running properly the code present might cycle and turn itself off. You might say "if the engine isn't running right shouldn't it have a check engine light and a trouble code?" Sometimes conditions occur that will not be detected by the computer, example: if the intake or exhaust valve operation fails the computer cannot detect the failure because the problem is not sensor related, so the engine has no power and the computer thinks everything is ok with no codes. If the trouble code retrieved relates to a low power like a Mass Air Flow (MAF) sensor or ignition coil system failure repair these problems and re-test system. If no trouble codes are present proceed to the next step.
Step 2 - Check the Air Filter - A plugged air filter not allowing the proper amount of air into the engine. If air is not allowed to enter the engine's intake it will limit the engine power output. To check your engine air filter open the hood and remove the air filter from its housing and inspect, replace as needed and recheck.
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