are these symptoms of a bad maf?

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Stratokat
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when im parked and start the car, it idles for **** then eventually dies. unless i rev it a ton it will sometimes ide better. but when i do rev it it wont rev past 4 or 5 thousand rpm's.

i unplugged the maf and nothing changed except for now i am only able to rev up to 2 or 3 thousand before it bogs down.

im running an sr20det with a side mount and stock blow off valve. i have stock KA piping from the cat back. is there anyone who experienced the same thing, if so, how did you solve it!?


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IDRFT95S14
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check ur MAF's wires on the plugs

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ddgsxr504
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Possibly be the coolant temp sensor, those are notorious for taking a crap.

Otherwise yea it could be the maf or a vaccuum leak.

Stratokat
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IDRFT95S14 wrote:check ur MAF's wires on the plugs
the wires look fine. does this sound like a wiring issue? my reasoning was if it was wiring, the thing wouldnt work at all, and there would be no difference with the maf plugged or unplugged

Stratokat
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ddgsxr504 wrote:Possibly be the coolant temp sensor, those are notorious for taking a crap.

Otherwise yea it could be the maf or a vaccuum leak.
coolant temp sensor would eff with the engine that much? i mean, my car barely BARELY moves, i can only go like 10 mph

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IDRFT95S14
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naw im just sayin cause i accidently ripped out one stupid wire off of the MAF and the car woulnt even go past 3000 RPM's but its fixed now

Stratokat
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IDRFT95S14 wrote:naw im just sayin cause i accidently ripped out one stupid wire off of the MAF and the car woulnt even go past 3000 RPM's but its fixed now
oww yeah. thats what happens when i unplug it completely.

gah, this is soo frustrating

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Steady_One_S13
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It's your maf. My sr20 would start just fine without it, but wouldn't rev pass

2500 rpm. When I would plug the harness to it, the sr would bog down

and die. I swapped a new one and voila! No gremlins!

Stratokat
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Steady_One_S13 wrote:It's your maf. My sr20 would start just fine without it, but wouldn't rev pass

2500 rpm. When I would plug the harness to it, the sr would bog down

and die. I swapped a new one and voila! No gremlins!
but the only difference was when mine is plugged in, it revs up to 4 or 5 grand then bogs down. and when i drive, there is absolutely no power anywhere on the power band. did yours do all that?

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Steady_One_S13
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No. Try cleaning the maf sensor. I used CRC's mass air flow sensor

cleaner. That helps. Clean your filter as well. A dirty filter and maf will

cause loss of power and mpg.

Stratokat
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i sprayed brake cleaner on it, does the same thing.. gah. and the filters new.

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Steady_One_S13
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mmmk... try swapping a new maf or borrow one from a friend. Check to see

what happens then.

Double check wiring from the ecu to the plug.

Check for leaks. A small leak can also cause funny stuff as mentioned.

Basically, double check.


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Steady_One_S13
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Stratokat wrote:i sprayed brake cleaner on it, does the same thing.. gah. and the filters new.
The CRC maf sensor cleaner that I have says, "don't use

aggressive chemicals like brake cleaner, carb cleaner or intake

cleaner on maf sensors".

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nifares240
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brake cleaner will destroy your maf. don't use this. there's a maf cleaner like mentioned here.

Stratokat
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Steady_One_S13 wrote:
The CRC maf sensor cleaner that I have says, "don't use

aggressive chemicals like brake cleaner, carb cleaner or intake

cleaner on maf sensors".
frick. well, after spraying it on, there was no change... so either it didnt clean anything, or the maf was just as busted as before i sprayed brake cleaner on it

drdiro32
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CHECK YOUR INTERCOOLER PIPES (Couplers ). YOU HAVE A LEAD


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IDRFT95S14
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drdiro32 wrote:CHECK YOUR INTERCOOLER PIPES (Couplers ). YOU HAVE A LEAD
ist post eh welcome

Stratokat
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drdiro32 wrote:CHECK YOUR INTERCOOLER PIPES (Couplers ). YOU HAVE A LEAD
sounds logical. but it IS your first post... so imma be cautious lol

DriftX
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if a car will barely make power, then it can be a couple of things.

spark, air, fuel, timing, compression.

spark -Have you checked for loose grounds on your ignition? Grounds? Plugs?

Air-Have you checked maf? Maf wiring? Clean maf? Maf ground? Shielded wire? TPS set correctly? Vac leaks?

Fuel-Adequate fuel pressure? clogged filter? Bum fuel pump?

Timing-Checked base timing? CTS? Maf?

Compression-Is the motor healthy? Prob so

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Jaino40
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Sorry for dragging this down, you ever find your problem?

fukkeneh240
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bump.. same issue. did a new maf fix it? i borrowed a different maf, but it didnt make a difference. maybe that maf is broken too?

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HeadAblaze
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So what was your maf issue?

Racerfanny
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No. Try cleaning the maf sensor. Clean your filter as well. A dirty filter and maf will cause loss of power and mpg. Or you can ask for mechanic


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