I have a 02 maxima 3 months ago I was otw home an everytime I would stop at a light it would cut off I would have to keep revving the engine so it wouldn't cut off but it ended up cutting off again an wouldn't start again... the battery was to weak .... the next day I got a jump an it was running like **** ... I pulled the plugs an 4 out of 6 had oil on them... so I bought 2 new valve covers new coil packs an plugs I replaced everything an now the car turns over but wont start unless I use starting fluid but it only runs for second or 2 .. I'm getting fuel to the rails an all ... I noticed if I unplug my tps the car starts right up an runs for 5 or 6 seconds an dies ... I have no clue what's going on... btw a ob2 scanner wont scan my ecu idk y buts it's been like that for yrs

 

I've changed both cam sensors ,maf sensor ,knock sensor an crank sensor

 

One other thing when I had the plenum an throttle body off I caught my son opening an closing the throttle body.... I'm not sure if that's y it's not starting or what but I do know it started even though it ran like crap before I replaced anything.... being a single dad an paying for a uber to work everyday is takin its toll any thoughts on this would be great thx in advance

 

Why would there be oil in the plugs? Did someone put too much oil in the engine? This would cause the engine to stall because your plugs are getting soaked in oil. That sucks your code reader won't work. It's like trying to fix things but your blind.

 

what brand coils did you use? The cheapest ones are junk and are known to cause big issues. Hitachi is the only coil brand to trust.

 

I got the Hitachi coils an ngk plus .... when I unplug the tps it fires right up an sounds good then cuts off right around seconds... with the tps plugged in it wont start unless I spray starting fluid

 

OK, if you indeed changed your coils as described, then check your MAF, Cam/Crank sensors, or possibly Injectors stuck flooding.
Good luck!

 

This is what happens when someone doesn't read the entire thread.

 

need codes man, and what brand cps sensors did you use? if you didnt get oem, you are wasting your time and ours helping you.

 

I bought all the sensors from autozone.... both cam sensors, crank sensor an maf .... everytime I try an check the codes it says it wont connect I've tried alot of scanners an they have said the same .... it hasn't read codes in awhile but the car ran fine up until now smh I changed the knock senser since I had to take the manifold off ... yall think that might of been bad ? I'm running out of ideas lol I'm thinkin its maybe the tps cause I found my son playing with when I had it off the car but idk

 

cps sensors wont last from autozone, you can't eliminate the possibility of CPS issues unless you use OEM, i have been through it, all problems went away after OEM CPS sensors. im not saying thats the end all, but if you dont have codes its hard to keep saying what it could be. why dont u get the free code scan at autozone when you return your CPS sensors?

and thinking more , honestly the beggining of your problems sounded exactly like CPS symptoms and note they dont always throw codes !! i didnt have any codes when it started happeneing , and even with the crappy aftermarket ones started going bad in less than 12 months when symptoms started reoccurring still no codes, replaced with OEM, haven't had one lick of problems.

mine started the stalling while coasting every once in a blue moon, then progressively more often, till i could barely crank it over to drive 1 mile to the mechanic to change them.

 

I got 3 sets of CPS an I've tried all 3 lol a new set the set I had on the engine when it died an a set from my old engine that blew .... an I have 2 different maf sensor's... so I have no clue what's wrong with it smh

 

out of the 3 sets, 2 were probably originals (old) , and your 3rd one was aftermarket (wont work). just saying