If it's still in limp mode it will refuse to go over 3500 RPMs no matter what. Does it slow down more than usual if you shift into a lower gear on a hill? Otherwise I'd go have the mechanic test your fuel injection system. Probably choked up.
SOURCE: 91 miata mx-5 cuts out at 2200 rpms- cant smog- check eng. lite isn't on
Sounds like petrol starvation - the pump may be in need of replacement.
SOURCE: 2000 Saturn SL2 fails smog due to failure of OBD Self test
Some vehicles require very specific drive cycles (called "drive traces"
if you perform them on a road simulator or dyno) to activate certain
self-checks like the catalyst and EVAP monitors.
As a general rule, doing some stop-and-go driving around town at speeds
up to about 30 mph followed by five to seven minutes of steady 55 mph
highway speed driving will usually set most or all of the monitors.
Consequently, if you're checking an OBD II system and discover that one
or more of the monitors have not run, it may be necessary to test drive
the vehicle to set the remaining monitors.
You should talk to a good emission tec, if this is not throwing a code, it is hard to say if that one of the components could be bad. O2,pump,convert, HeO2, every part of the emission system.
With a 1000 miles, and doing what is says above just before the test, and ending driving at the test
should be plenty. If it is not, you will have to have each emission part checked, or when the computer
is plugged in it might show a code that did not trip dash light.
SOURCE: Vacuum leak-P0171 2000 Toyota Echo. Need vacuum diagram
A P0171 code does not indicate a vacuum leak; it indicates a dirty mass air flow sensor. This device is located between the air filter box and the intake manifold. Locate it, unplug the wire harness, and remove the 2 screws that holds it onto the intake pipe. Look down inside th sensor, you will see 2 small wires, that are probably covered with fuzzy things...using a spray cleaner, such as brake cleaner, spray the 2 wires until they are clean and shiny. Do NOT use compressed air, that will damage the sensor. When it is clean; reinstall it and drive it. The computer will recognize the now clean sensor, and your troubles will be over.
SOURCE: Rattleing noise between 2500-3500 rpms 01 protege
Just took my car to the shop for the same appearent reason me also thinking it may be lifters. My mechanic said it spounds like a worn wrist pin ...... bad news for you if this is the case .......recomendations rebuild the engine or buy a new or remanufactured one. if the wrist pin lets go then you could throw a rod. If you must drive the car please be gentle
SOURCE: EML, Check Engine, Limp Mode
What is limp mode, and it is MiL light( mal function indicator light)it is not EML. Please specify so i can help
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