maf problem again...i think

[AdOoRaBell323ci]

hello guys....another problem...
can a maf sensor go bad just like that *snap*?? the reason i ask is that...i just bought a brand new maf sensor about 5k miles ago and every thing was perfect!! how the problem happend....today was a very nice day in hawaii...every thing was normal, drove to work fine, BUT when i was about to leave from work, my car did not want to start!! it would crank but would not turn over....i had this same exact problem and found out that it was the maf sensor...so i changed it about 5k miles ago and every thing was fine....could it be that my maf sensor went bad again?? i tried unpluging the maf sensor and it had the same symptoms as it was plugged...
is there a way to clean it?? could it get that dirty enough for it to act this way??
thank you for your help every body... any response will be greatly appreciated!!

[douglas_ngo]

Is the CEL on? The oil from the K&N filter tends to foul up my MAF sensor. I clean mine with the MAF cleaner from Pepboy.

[AdOoRaBell323ci]

thanks for the response....so when you say foul out you mean....the same exact problem as mine??

the cel lightwas on but like a dumb ass i erased it....but i do remember some codes...
p1188
p1189
p1140
p0170
p0173

[AdOoRaBell323ci]

bump any body??

[Custom3]

Is the CEL on? The oil from the K&N filter tends to foul up my MAF sensor. I clean mine with the MAF cleaner from Pepboy.


Try what he said.....i had the same problem...went out and brought a maf cleaner and it fixed it right up....try it...youll only will be spending like 4 bucks for the spray can.

[AdOoRaBell323ci]

okay thanks for the input....i cleaned it with crc electric parts cleaner....thats all the store had....but it still didnt work! what could be the problem?? could it be a bad coils, i just changed my plugs a couple weeks ago.... or do you think its a maf problem?? is the maf posible to ground out?? (fry) please help somebody......

[AdOoRaBell323ci]

any body?? please?? i checked cylinder 1 and 2 for spark but there was none.... could that be the problem??

[AdOoRaBell323ci]

been searching and searching...could it be, a bad fuel pump??

[AdOoRaBell323ci]

any body?? there has to be some techs in here tonight...please

[AdOoRaBell323ci]

?????

[DAI Msports]

any body?? there has to be some techs in here tonight...please

1188 Fuel control ( Bank 1 Sensor 1 )
1189 Fuel control ( Bank 2 Sensor 1 )
1140 Mass or Volume Air Flow Circuit Range/Performance Problem.
0170 Fuel Trim Bank 1
0173 Fuel Trim Bank 2

I personally think that it might be a bad fuel pump .
Do this for starters take out your rear seat .
Then locate the Fuel Pump cover .
Remove the top cover off your F.P .
Then remove the harness off the pump and check to see if you ave a signal to it . If you do have a signal then do a Fuel pressure test .
Let me know what happened after that . Oh by the way feal free to call me at 949 364 0954 it would be much easier to help you over the phone .
Im Jack by the way .

[AdOoRaBell323ci]

1188 Fuel control ( Bank 1 Sensor 1 )
1189 Fuel control ( Bank 2 Sensor 1 )
1140 Mass or Volume Air Flow Circuit Range/Performance Problem.
0170 Fuel Trim Bank 1
0173 Fuel Trim Bank 2

I personally think that it might be a bad fuel pump .
Do this for starters take out your rear seat .
Then locate the Fuel Pump cover .
Remove the top cover off your F.P .
Then remove the harness off the pump and check to see if you ave a signal to it . If you do have a signal then do a Fuel pressure test .
Let me know what happened after that . Oh by the way feal free to call me at 949 364 0954 it would be much easier to help you over the phone .
Im Jack by the way .
thanks jack...i tried calling but you had just left the shop.....is there any way you can call me?? i left my number with one of your workers....thank you again

whats the posibilities that i could be the maf / fuel pump??

[AdOoRaBell323ci]

all right....i guess it was my fuel pump....i fixed it last night and every thing started right up....the hardest thing about install the fuel pump would have to be the gasket....that was a b!tch to do...but i manage to finish it...

i would like to thanks every body on the forums that had help me...i really do appreciate everything that you've done... i just hope that one day i could do the same thing!! mahalo from hawaii-justin

i guess it wassnt the maf after all....thanx again

[travis5000]

i have had the same problem , i took it into the german mechanics shop, they said my fault code was a bad maf, put a new on in , and it didnt fix the fault codes.. :banghead:

but im getting the same ones as you.
P0173
P0170
P1189
P1188

So im guessing all i have to do is take off my rear seat, and swap in a new fuel pump? I assume this can be done with no "special needs" tools?

how hard was this.. :hmm:

[AdOoRaBell323ci]

i have had the same problem , i took it into the german mechanics shop, they said my fault code was a bad maf, put a new on in , and it didnt fix the fault codes.. :banghead:

but im getting the same ones as you.
P0173
P0170
P1189
P1188

So im guessing all i have to do is take off my rear seat, and swap in a new fuel pump? I assume this can be done with no "special needs" tools?

how hard was this.. :hmm:


well every thing was pretty much straight foward
-remove rear seat by pulling up
-behind the passanger seat is where the fuel pump is, remove the rubber piece
-remove 4 (10mm) bolts off the metal cover
-remove metal cover, you should see the fuel pump by now
-you will see a electric connector slide the clip to the left and pull out, then remove clamp from fuel line, remove fuel line and plug it with a bolt that will fit its size...
-you will see that around the fuel pump there is a grayish looking cap with slits around it...(bmw has a special tool, but i just used a flat head screw driver and tapped it with a hammer till it started to loosen up (lefty loosey, righty tighty) )
-remove metal cap and pull the fuel pump lever up...it should pop right out.
-remove fuel pump
-replace with new fuel pump and gasket...(the hardest part)
tip: dont place the new gasket on the fuel pump, place it in the hole where the fuel pump goes in first...
-put metal cap on the fuel pump and push down with all your might and tighten..
-reverse steps after that..
thats about it! no special tools really needed..easy DIY...

FIRST: before replacing...check if the fuel pump is still good...you dont want to replace anything that doesnt need to be replaced....when back seats are out turn the key to position 2 and see if the fuel pump makes a buzzing sound...if it does then every thing is good

SECOND: i still do have the p1188, and p1189...im not sure if p0170, p0173 is still there ill have to get back to you on that one...
i replaced mine because my car didnt want to start...it sounds like yours is running fine...but idk...

let me know if every thing goes fine..

[sheefo2k]

great thread :thrumbsup:

[AdOoRaBell323ci]

i have had the same problem , i took it into the german mechanics shop, they said my fault code was a bad maf, put a new on in , and it didnt fix the fault codes.. :banghead:

but im getting the same ones as you.
P0173
P0170
P1189
P1188

So im guessing all i have to do is take off my rear seat, and swap in a new fuel pump? I assume this can be done with no "special needs" tools?

how hard was this.. :hmm:

i have bad news! i still have the damn codes...
p1188
p1189
p0170
p0173

replacing the fuel pump DOES not turn these codes off.... so i wouldnt replace your fuel pump unless your car cant start, and if that is the problem....

but then again...my gas light is on...so i am gonna fill up my tank and erase the codes and see if it comes back again...hopefully

[_.dstrukt.n1ne]

i have bad news! i still have the damn codes...
p1188
p1189
p0170
p0173

replacing the fuel pump DOES not turn these codes off.... so i wouldnt replace your fuel pump unless your car cant start, and if that is the problem....

but then again...my gas light is on...so i am gonna fill up my tank and erase the codes and see if it comes back again...hopefully

I have the SAME exact codes as you; did you ever find out what was wrong?

[GUNIT]

I have those 2 codes,
P1188
P1189

car wont turn on, it sounds like it wants to but it just wont turn over.

What could be the problem, how do I replace those 2 sensors?

Where are they located?

[ssm1991]

It's rare that both O2 sensors would go out at the same time, although you should replace both if one goes.

And AFAIK, the car should start even if the sensors were busted, but you'll get a CEL though.

Better check the fuel lines first: clogged fuel filter, bad fuel pump relay, fuel pump. Find out what the problem is first before replacing parts.

[revuell]

I have similar codes
1250
0170
0173
1188
1189

If anyone found the solution please let me know.
I just hit 97k miles.

[Dannyncc]

Last week i did the vanos seal replacement work just fine. The next day i clean the ICV n throttle body.
Problem begin.

p0300
p0170
p0306
p0303
p0305

So I redo the ICV and throttle body clean again,
Some code solved.
LEFT p0170

ANYONE know what is the solution?
I cleaned MAF several time already
Not helping

What is the next thing i should try ?

[ritos530i]

Anyone thought to check the spark plugs or Coils

[Dannyncc]

Last week i did the vanos seal replacement work just fine. The next day i clean the ICV n throttle body.
Problem begin.

p0300
p0170
p0306
p0303
p0305

So I redo the ICV and throttle body clean again,
Some code solved.
LEFT p0170

ANYONE know what is the solution?
I cleaned MAF several time already
Not helping

What is the next thing i should try ?



How to do vacumm leak check ?

[sheefo2k]

I m not sure if we are talking about the same thing here but I can tell you that I have the same problem and its a RAM error on the DME. :(