Chosen Solution
My 2006 Nissan Altima won’t accelerate over 2RPM, when it goes above that it starts jerking, almost feels like it’s choking. I just changed the Camshaft Sensor because it wouldn’t accelerate when I pressed the gas pedal at all. It now goes, but only until it reaches about 21/2 Rpms. It has a new MAF sensor and just replaced the throttle body sensor. Please help I don’t know what else it could be. I’ve recently learned about something called fail safe mode? Could that be my problem? If so, how do I fix that??
It sounds like your car is in “limp” mode…that is to say it will drive but not accelerate nor go above 30 mph. This is to protect the engine from further damage….long enough for you to get to a garage.You could try buying a OBD reset plug that clears all the fault codes and see if it runs properly or returns to limp mode.If it does then you need to have the codes read by a garage to pinpoint the problem…before it causes even more problems.Usually sensors are to blame , lambda…electronic throttles…intermittent connections. I had a ford maverick do this and eventually discovered the throttle was electronic and a few hard blips on the throttle linkage with the engine switched off freed the problem and the limp mode disappeared.
I experienced the same problem last night. I thought it was because I forgot to put engine oil in my car, so I did that today. Still had the problem. I then went to an inspection shop where I was told it could be a number pf problems. He said I should disconnect my battery terminal for a few minutes because the vehicle entered “limp mode", which prevents you from damaging your engine (or something in that regard). I disconnected it for about 5 minutes and my check engine light went out. Its like a code that you reset by restarting the battery beginning with your battery terminal. My vehicle is operating normally now and I feel so relieved that it could be fixed my something that simple. I was thinking I’d need a new catalytic converter after doing research. I hope this helps you all as well. It’s worth a shot.
It definitely sounds like it is in ‘limp home’ mode … this keeps the revs below 2000 - 2500 RPM. It could be a number of things … but as you have already replaced a few components it makes sense to reset the ECU and then see if the error persists. So … with the drivers door open disconnect the positive battery terminal then press the brake pedal a few times to make sure there’s no electrical power left in the system. Keep the battery unplugged for at least 10 minutes before connecting it back up and starting the car. If the problem still happens then you will need to get the error codes checked with an OBD scanner
So I know it’s late but everyone says to check the MAF sensor. If you’ve already done A-Z then it’s probably the rubber boot right before the MAF. I don’t have the money right now to do A-Z and decided to look around that rubber boot and found a 3 in gash right on the backside that i just super glued and taped over to until i can get paid to be able to replace it. It was causing a vacume leak and causing that sensor to not read properly
