Could be one of several sensors or a vacuum leak. If your check engine light is on you should buy an inexpensive scanner at your local parts store. Scanner start at about $60.00 and work on almost any car from 1996 and up. Key needs to be at the run position, engine off, and plug scanner into obdII port located under dash on driver's side. Scanner will display four digits codes whose meaning are given in the scanner manual. Replace faulty sensors and reset engine light. Resetting engine light takes about 30 seconds and step by step instruction are given in scanner manual. If check engine light is not on check for leaking hoses or gaskets. Hoses are easy to check just listen for a hissing sound and feel around connections for any sources of vacuum. Gaskets require a bit more knowledge of where to look. Intake or throttle body gaskets are typically the first place to check. An easy way to check them is to spray throttle body c leaner around the sealing area, if a change in idle occurs you found your problem. The spray momentarily seals the vacuum leak and returns the engine to normal idle. These are the basic steps any tech will take before moving on to more complicated diagnosis.
"A used Nissan Pathfinder's price will vary on some factors. Price fluctuates depending on mileage on the vehicle, year it was made, upgrades found on the vehicle, and the vehicles condition. You can find decent measures of the price of a used Nissan Pathfinders by going to a dealership and getting an assessment, or going to auto sites that calculate all the factors for you and give you a price according to Bluebook/trade in/and buyout-sellout prices."
i suggest going to nissanpathfinders.com and go to the forums, they know their stuff there
mass air flow sensor
on the back of the drivers side head. it has an ign, gnd, and data wire going to it
On fuel rail under intake plenum almost in center of engine if you reach behind plenum you can feel the vacuum hose going to it
Squeak or whine? Possible that your clutch is going out.
The water shouldn't bother it any. The risk in this case is from foreign material (sand, road debris, etc.) being deposited inside the starter. That could short it out. I suppose it's possible, depending on how fast you were going for the water to loosen/tear a wire off the starter so you might check that out.
look under the drivers side dashboard you will find the combination flasher unit, it is square and has a wire connector going into the side Try this site out, it might help you out. http://autorepair.about.com/library/pictures/illustrations/bl703lib.htm
It sounds as if the master control panel on the driver's door got wet.
I'm in the same boat with my 01 Pathfinder and the most likely answer is the Idle Air Control Valve or IACV. The question we haven't solved is why the valve isn't working. By all accounts the IACV is a very solid part on the Pathfinder. The dealership wants me to replace the valve and possibly the ECM also. The valve is about $400 but the ECM is closer to $1300. A second shop said the problem was wiring. I don't have the final answer but would like to hear any feedback you have
The kelly blue book of a 2009 Nissan can vary by the model of the vehicle. If you have a Nissan Altima and a Nissan Maxima they are going to be different. You are also going to have to consider in the mileage and features.
Not whilst pregnant.