It’s a modo of the car commonly known as “get me home” or “protection” and is usually accompanied by the lit up engine management light on the dash, this usually mean that there’s an issue with the vehicle that can cause serious damage to the engine if ignored, the best thing to do in this case is to read the fault code from the ECU, this can be done by either taking it to a garage that will do a diagnostic for you or you can buy an OBD2 fault reader online and read the code yourself, they are usually inexpensive and are a great tool to have as the issue could be a very simple fix however it could also be a very expensive fix that requires an experienced mechanic.
SOURCE: 1994 model toyota corolla - AE100
Don't think there's anything wrong with it. That's pretty normal for mine. If it's unusual behaviour for your car, check your coolant level. I almost ran mine dry last year and found in the days leading up to it that my idle revs were sitting around 2000 once the car heated up. If it turns out to be that I can give you some real handy tips for changing your coolant and flushing all the junk out. Much cheaper than a mechanic and good if you have a spare hour.
SOURCE: 2001 Peugeot HDI fuel starvation .
does it get worse as it runs? this would indicate exhaust problem. could be mass air flow
SOURCE: rev counter, speedo & sometimes fuel & temp guage not working
pull the instrument cluster out and check the printed circuit and connector to it from harness, plug it in and out three or four times, this may cure the problem.
SOURCE: engine will not rev above 3000 rpm
Inadequate fuel pressure, change the fuel filter first, make sure the car sits for at least two hours before replacing the fuel filter because these fuel lines are under high pressure during the time of operation. The pressure usually decreases over time in the lines but wear safety glasses just the same, I would recomend depressurizing the fuel system first, buy a Haynes repair manual for detailed procedure to be safe. If problem persists go to Auto Zone and ask them to check for trouble codes these codes if present may instuct you in detail to replace the MAF sensor or give you a code that must be looked up to find the problem.
SOURCE: 4g93 gdi engine starts wont rev above 3000
Hey have you tried disconnecting and re connecting the battery? my mitsi carisma startd doing that so i rang up dealer and aparently they do it when the computer thinks there is something wrong with the engine, so it enters slow mode (or turtle mode or something) so that minimal damage is done while you drive it slowly to yr mechanic. Could be complettly wrong tho. Good luck.
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