Need Help figuring out problem with my 02 nissan maxima

[Grim-One]

My CEL came on awhile ago and I got it diagnosed and the mechanic said it was the crank position sensor I changed both the cam postion sensors and the crank position sensor and now my car struggles to start and sputters while I drive to top things off my tachometer doesn't work now so I dont know what to do can somebody PLEASE help me I have an 02 3.5l 6sp maxima

[maxhopper]

Welcome to NICO.

Did you change out both crank sensors or just one?

[Grim-One]

Thank you I just found out about this site and I own a Maxima so why not join.I changed a total of 3 sensors.the cam sensors and the crank position sensor.it was running fine before I put them on and after I changed them all my car struggled to start and now struggles to start.After it starts it struggles to climb in speed but I can still drive normal I dont understand what happened or what I did wrong.My tachometer stopped working to,I'm really confused.

-Edwin

[maxhopper]

You actually have two crank sensors. One is below the crank pulley and the other is where the transmission bell housing bolt to the engine on the side by the radiator. You might try replacing the other one and see if that helps. If it doesn't, you may have gotten a bad cam sensor.

[Grim-One]

I changed three sensors on the side of the engine my car wasn't acting funny before I touched those sensors my car always starts but I have to crank it for a few seconds and my tachometer stopped working I put the old ones back on and the car still runs funny I dont understand what went wrong

[xerexabante]

did you unplug the battery cables before you started working on your car?did you clear the codes after replacing parts?

[Grim-One]

I disconnected the battery but I didn't clear the codes how do I go about doing that?

[xerexabante]

you can go to autozone and they might or else take batt of over night over 12hrs.

[Grim-One]

I'll try that and hopefully it does the trick.thanks for all your help

[xerexabante]

ur welcome hope everything is ok

[Grim-One]

that wasn't it and they cleared the code and still nothing now there saying its a wiring problem and I should take it to the dealer but I dont trust dealerships to much and mostly everyone at there service department are bungholes I dont know what to do?I dont think I have much choice

[xerexabante]

take it to the dealer, and or a reliable mechnic. ask around here for your local area mechanic for recomendations