i finally got it back up and running but every now and then it seems to go back to old behavior where it wont accelerate at about 2.5k and up. any suggestions? not knock sensor. it a lil different. its kinda like it gets stuck and is getting to much of something. tia

 

Revs but doesn't accelerate = clutch slippage.

 

sounds like mass air flow sensor...mine used to stop at 2k

 

i think it could b maf 2. not clutch as i have an auto and it doesnt rev.it gets stuck at a rpm and then seems to decelerate itsself just sometimy

 

Autos have clutches too. I misunderstood, thought it revved but wouldn't accelerate.. Columbian is right, won't go past 2500 = MAF.

 

Actually,it sounds more like bad connections to some of your critical sensors,in my experience with these cars,the maf is either good,or bad...Not good sometimes and then bad somtimes..This goes for other sensors on the engine also...


You mentioned in your previous thread about a wiring issue with the cts,right?

Throughly check all your sensor connections/make sure there is no corrosion on the terminals,and that they have a nice tight connection at the plug ends,i've had a few similar issues to yours come back to a loose/crappy wire harness connections many times in the past...

 

it might have been the ecu. i left the negative terminal off last night and its been fine so far

 

:

 

well i guess i was incorrect. it has done it again. if i keep the pedal stable it will eventually pull itself out or in can go wot and pull out. noticed if i go wot its rich as a saw smoke from rear

 

You wanna run that thing by my house sometime?

 

try unplugging the MAF and see if there's a difference then report to us

 

sounds similar to my problem. except mine does it only when it rains or when the ground is wet. i will push the accelerator all the way in and the engine will rev up to 2k rpms and will drop rpms even with my foot all the way down on the gas pedal but if i left off the gas and do it again it will react but will drop rpms drastically. no codes what-so-ever but that was like a year ago. i've had this problem for about 2 years now. i will have to check my connections and maf sensor and see if that could be it. but when the weather is nice and dry it will perform normal with no problems but when a rainy day comes by i loose power. my friend as Nissan told me it can be the clutch slipping if there might be a small opening in the tranny that will let water into the bellhousing.

 

i think it is tps as when i unplug it it runs perfect. execpt for the loss of acceleration power sometimes its great. my tranny does shift hard into 1st sometimes

 

You need new/real friends ..................... also post the dealership name that your current friend is working at so we all know where not to go.

 

Have you replaced any coil packs?

Does it totally stop at 2500 rpm or does it just kind of "conk out" especially on acceleration?

I see you aren't an .org supporter. I will link some of the threads from the past that dealt with similar issues.

http://forums.maxima.org/showthread....hlight=bucking

http://forums.maxima.org/showthread....hlight=bucking

http://forums.maxima.org/showthread....ghlight=stalls

http://forums.maxima.org/showthread....hlight=bucking

 

I sold him mines.

 

it doesnt totally stop. just kinda struggles like it want to go but its hard. then it just goes fine. this is with normal acceleration. i noticed it only does it after the engine has warmed up

 

well now it has disappeared as some others said theirs had.

 

he said it might be the clutch. at any point i didn't say that he said its the clutch slipping. big difference in wording. i don't need to say where he works or what dealer it is. its in Miami, Fl. and thats all that needs to be said. i stated my situation to see if someone on here might know what it can be and not someone just make a post for the heck of it. this is a place to help each other out and not respond with ignorant remarks. so, you can either tell me what it is or might be or not post at all. i'll just leave it at this.

 

definitely sounds like a firing problem at that rpm. why, no idea. plugs, wires, coils, sensors, etc. could be expensive troubleshooting, but its not going to be any cheaper to let a "professional" "troubleshoot" it (fixing minor things expensively to no avail).