i think i have a bad MAF...cuz when i disconnect the MAF and then start the car it doesnt start, it jus dies immediately....it should start and should not go up to 3000 rpm i guess? and plus my car hesitates when i come to the full stop and accelerate again it drops the speed for like 1 sec then immediately piks up the speed....could it be the bad MAF?

 

non-starting due to leaving the maf unplugged usually means there are other sensors that are bad.
try unplugging it with the car already running, see if it will stall out/shut off.

 

ok today i unplugged the maf and then started it it didnt start then i restarted ..it started...but wasnt going up to 2500 rpm and then i turned off the car and plugged the MAF bak then started the car and car was running gud then while it was running i unplugged the MAF and it died....is that normal? i checked my MAF too and there is OIL around it going inside and i think lil bit went inside too...oil coming from the left hose which is coming from injecter's side...do i need to clean my MAF? and what should i cleaned wit?

 

plus i took off my TCU and ECU harness under the dash, cleaned it , and put it bak and i checked it again they r gud ..could it be that? or its relearning?

 

my car is hesitating when it goes around 4000rpm...i think my MAF is dirty or something is wrong wit some sensor...wat it could be?

 

is it consistently around 4k?
does it matter what gear you are in?
I'm thinking coils, but if it's consistent that would be very unusual.
check your timing also, 4k is roughly where the computer starts to ignore the knock sensor.
Are you using premium gas? or just regular?

 

no it goes up to 4k but when it does its like lose power come bak lose power come bak like its just gonna shut off anytime but it doesnt and keep doing that..when i come down on normal its runs like nothings wrong...

 

i just pulled out codes from ecu and its giving me 12 and its giving me that cuz i think mah maf hasnt been cleaned since 2 years now i jus cleaned it wit MAF cleaner and WOW that film inside started shining before it was BLACK COVERED WITH DIRT...less see wat happens i m letting it dry....and ya can i use MAF cleaner on something else too?

 

alright its giving me only 43 now..what should i do to fix that?l

 

(so people dont have to think "whats a 43, again?")

 

ok its too lean then how should i bring it to normal..? i read it in FSM it says 43 is THROTTLE POSITION SENSOR open or shorted..?:S

 

that's what benstoked. the leanness thing only applies to 87 sentra. all others' 43 means the TPS thingymajigger is open or shorted.

 

oh shyt my bad i was reading the other way around....i fixed the problem anyways...i went to my teachers house and he guided me thro...there were timing problems needed to be fixed anyways thanks guys.....