Check engine light P0101

[Mastec1969]

Thank you Oldtech for the additional info. Found an SX4 in the yard in Florida. I live back in IL. Have a friend grab it for $5 and some change. Took a vacation to FL to
Pick it up. Still set the P0101 but did not change air foyer yet. However bigger problem now!!!! My son was driving it got off highway rpm’s went high no increase in mph. Made ot two blocks to work barely with a loud whining noise. Soon after No forward gears. But had reverse??? I think the CVT trans puked ! 124 k miles. What now? Rebuildable or used?

[old tech]

Yeah , average lifespan on these transmissions is 120 to 130,000 miles. Yours is right on time. Do you replace it with a used one? Probably not. They’re too expensive used and you’re just setting yourself up for the same problem. It is best to fix what you have. In your transmission really the only thing that’s bad is the pulley and belt system. On the primary pulley, the balls have basically wore out letting the whole thing wobble plugging up your screen with debris and just by changing the pulleys and belt and cleaning the screen , the problem would be fixed but a new flow control valve should be installed. Good condition donor parts can be found in 2008 to 2012 Nissan Sentra‘s. These cars are too light to tear up the pulley but really should be converted to long pin in the primary pulley while under the knife. One sidenote is that there are two different gear ratios used in the Sentra . The 10,11 and 12 match the Kizashi . The earlier years, the gear must be changed on the secondary pulley. I offer a transmission that’s fixed and ready to go for $850 plus a $200 core if an all-wheel-drive one is requested. If the whole vehicle was brought to me total bill is 1900 with fluid and ready to go and warrantied for a year.


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[chickenboy10]

Hello, I am also having the mass airflow censor issue coming on every once in a while when I cold start the car. However, it always goes away after scanning with an OBD2 scanner. What is a permanent solution to this issue?

[old tech]

If this was mine I would make sure its says Denso on the top of MAF. Clean Maf using throttle body spray cleaner. Make sure air filter type is paper like original and that its clean and air box is not broken. The K&N filter is a poor choice for most owners letting . Also keep a good battery in this car. There usually is a build date on them. US batteries are good for 4 years on average are recommended to be replaced then as well. A load test can be done too.

[chickenboy10]

If this was mine I would make sure its says Denso on the top of MAF. Clean Maf using throttle body spray cleaner. Make sure air filter type is paper like original and that its clean and air box is not broken. The K&N filter is a poor choice for most owners letting . Also keep a good battery in this car. There usually is a build date on them. US batteries are good for 4 years on average are recommended to be replaced then as well. A load test can be done too.

Thank you old tech. Because the car is hammy down from my Mom, and I am not used to working on cars nor have the garage space and tools to do it, I took it to a mechanic shop today. The MAF sensor is indeed Denso, so I am getting my entire air intake system cleaned, changing the engine oil, fixing a huge valve cover gasket leak, replacing the spark plug cylinders, and engine cleaning for the oil grease in the engine bay for $800. I replaced the battery at an autozone a month ago, and that got rid of the issue of the car not starting at times. The car have 103,000 miles on it, but I will take good care of it maintenance wise to make sure it lasts for me.

[KuroNekko]

If this was mine I would make sure its says Denso on the top of MAF. Clean Maf using throttle body spray cleaner. Make sure air filter type is paper like original and that its clean and air box is not broken. The K&N filter is a poor choice for most owners letting . Also keep a good battery in this car. There usually is a build date on them. US batteries are good for 4 years on average are recommended to be replaced then as well. A load test can be done too.

Thank you old tech. Because the car is hammy down from my Mom, and I am not used to working on cars nor have the garage space and tools to do it, I took it to a mechanic shop today. The MAF sensor is indeed Denso, so I am getting my entire air intake system cleaned, changing the engine oil, fixing a huge valve cover gasket leak, replacing the spark plug cylinders, and engine cleaning for the oil grease in the engine bay for $800. I replaced the battery at an autozone a month ago, and that got rid of the issue of the car not starting at times. The car have 103,000 miles on it, but I will take good care of it maintenance wise to make sure it lasts for me.

If you ultimately need a new MAF sensor like I did, get an aftermarket Denso. More info here: viewtopic.php?f=12&t=5863

[chickenboy10]

Thanks KuroNekko, but no new MAF needed (yay). However, the car is making clunking noises from the rear suspension, and I was told that the rear shocks, swaybar, and struts were pretty worn and needs replacing. No quote yet but google tells me its going to cost another $1000 or so. Ughhh....

[chickenboy10]

If this was mine I would make sure its says Denso on the top of MAF. Clean Maf using throttle body spray cleaner. Make sure air filter type is paper like original and that its clean and air box is not broken. The K&N filter is a poor choice for most owners letting . Also keep a good battery in this car. There usually is a build date on them. US batteries are good for 4 years on average are recommended to be replaced then as well. A load test can be done too.

Thank you old tech. Because the car is hammy down from my Mom, and I am not used to working on cars nor have the garage space and tools to do it, I took it to a mechanic shop today. The MAF sensor is indeed Denso, so I am getting my entire air intake system cleaned, changing the engine oil, fixing a huge valve cover gasket leak, replacing the spark plug cylinders, and engine cleaning for the oil grease in the engine bay for $800. I replaced the battery at an autozone a month ago, and that got rid of the issue of the car not starting at times. The car have 103,000 miles on it, but I will take good care of it maintenance wise to make sure it lasts for me.

If you ultimately need a new MAF sensor like I did, get an aftermarket Denso. More info here: viewtopic.php?f=12&t=5863

The error code came back on again, so I will be ordering an aftermarket Denso MAF. Thank you for your guide!