Crankshaft positioning sensor replacement

If the engine starts then the crank sensor is okay. However, the check engine light means we have a code and we need to scan it for codes to find out what they are. Here is a guide that will help with that:

https://www.2carpros.com/articles/checking-a-service-engine-soon-or-check-engine-light-on-or-flashing

However, if this is a crank sensor issue, this guide could help with figuring out if it is related:

https://www.2carpros.com/articles/symptoms-of-a-bad-crankshaft-sensor

Let's get the codes and go from there. Check out the diagrams (below). Let us know what happens and please upload pictures or videos of the problem.

could you please send me a diagram of where my crankshaft sensor is located on my car? i do thank you so much.

This is what it looks like. I haven't found a good picture of the location, yet.

Just to add.

Here you can see the wiring colors at the connector.

where is crank sensor location

It should be behind the harmonic balancer in the front of the engine.

Car shutting down when hot.Code PO 335 (Crankshaft position sensor A circuit malfunction).Bought new sensor and replaced.Car would not start.Put old sensor back in.Car starts but same quitting problem. Assumed i had a bad part.Replaced part and re installed. Car still won,t start??

If it starts with the old part and not the new one, there has to be something different about the new sensor. Maybe you should try a different brand.

Just a thought but did new Crank sensor have a removable paper sticker on it to be removed before install?

what is the secret of getting the sensor out? I have taken out the bolt and unhooked the harness , the sensor is loose but will not come out.

that's all there is to it , should come on out . there is recall on this vehicle about the sensor though so your local nissan dealer should replace it free of charge..

I called Nissan and the CSR said that recalls are VIN specific and stated that there were no recalls on my VIN.

As to the removal of the sensor, it was the O ring hanging up. Thank your for your replay.

How many ohms should the camshaft sensor read and how many ohms should the crankshaft sensor read?

Thanks for the ohms and volts chart. I checked both sensors, checked out good. Fuel pressure is 59PSI. I cleaned the air intake sensor, but nothing has changed in the way it runs. Took it for a 10 mile run, when I accelerated (under a load) it would kick and buck as if I turned the key off, then back on. Probably 6 out of those 10 miles, the engine runs fine. It is as if an injector or coil is bad when it drops off, but it is like it is all of them simultaneously. At idle, it may run fine for 2 to 3 minutes, then just die. Starts right back up. I checked the wiring harness for maybe problems there, but nothing noticeable. There is no consistency to the problem, hot/cold, high/low rpm, acts the same. No codes are present, no check engine light. I have access to a snapon scan tool. Scratching my head. Would a fuel pump relay be intermittent to cause the engine just to drop off, shouldn't it slowly die if it were the relay? I am puzzled.

Try this diagnostic procedure.

I rechecked some items and checked others. Fuel pressure is 75 PSI dead headed and car running. Vacuum at manifold is 20. Checked fuel pressure regulator (working), checked for water in fuel, ran about 3 gallons out of return line while car was running. Camshaft and crankshaft sensor checked out exactly the same in ohms and volts. When it runs with out dieing, it is smooth. I am going to try and acquire the scan tool again and use it to watch each sensor voltage and action. Hopefully this will reveal something.

Did you happen to check the MAF sensor? I remembered a while back an 00 Sentra with 1.8L with somewhat similar symptoms, and the driver cleaned grease from her sensor, and the car worked great right after.

Yes, cleaned an already clean MAF.

Then get your hand on the scan tool and check each sensor operates, let me know..

where is the crank shaft censor? and how do you change it

The CPS is on right rear side of cylinder block

Where is the crankshaft positioning sensor and how do I go about replacing it?

See location below:

Testing and Inspection Component Inspection

Disconnect crankshaft position sensor (POS) harness connector. Loosen the fixing bolt of the sensor. Remove the sensor. Visually check the sensor for chipping.

Check resistance as shown in the figure. If NG, replace crankshaft position sensor (POS).

where is crank position sensor and what tools do i need to replace it

Located on lower left front of engine. It may be held in by a 10mm bolt. However, depending on clearance you may need a wrench. So this will have to be determined once you are looking at it.