Someone Please Help

[steamer1227]

Hey I'm new to the site. Looks like its a good site. Anyways I got a problem with my 1995 240sx (s14). the motor got 216,000 miles on it. Its very tempermental. when i first got the car i had to replace the MAF sensor due to a wire was pulled out. My prob. is that most of the time at idle the car will bog down like its gonna stall but catches itself and repeadily does it. I had to move the distributor advanced all the way it could go so that when you give it full throttle it wouldn't bogg out. Any ideas about how to get this motor running like a normal one. lol. Thanx

[chester_ff7]

its something electrical. my brother has a 95 S14 and he was having the same problem. check your ignition components.

[steamer1227]

ok i re-timed the distrubutor. everything is back to where the OEM specs should be. Timing wise. I was driving the car for a while now and yesterday the car drove like it always has, good but not great.

when i tried to start it today it started after 10 min. of cranking.

drove like ****, now car wont start at all.

95/240sx/ka24de nothing done to motor

only mods. are i cut the exhaust off after the first cat. conv. thats it

[ugadawg]

Is your CEL on?

[Ischreiber240]

Check ur Cap and rotor. That happen to me to on my 91 240sx. clean ur maf sensor with break cleaner aswell.

[ugadawg]

My 240 was acting similiar to yours, but my CEL was on. It was giving me like 7 different codes, all emissions related. Turns out it was just a blown fuse under the dash. So I'd start there, by checking all the fuses in the fuse box under the dash and then check the fuse/relay box in the engine bay. Hope that helps

[steamer1227]

No see thats the prob.

The CEL is not on

I did check the fuses all were ok and getting power.

I checked the cap and rotor the seem to be fine i did change them when i first got the car a 1 year ago. the still look great. i even took out the dist. to see if maybe one of the gears were broke/missing but everything was fine.

I took the dist. out after the prob. happened so i know its not that.

Something had to happen first.

Wont brake cleaner damage the MAF ?

I tried starting her today and nothing still cranking and nothing.

I do hear the fuel pump priming when i turn the key.

I'm gonna check spark today but could someone let me know if brake cleaner would damage the MAF.

[jaytv1019]

I would advise against cleaning your maf with anything. I have heard of way too many people damaging theirs by spraying brake cleaner into it.

Your first post says that a wire pulled out of the maf. Did you mean the wire pulled out of the clip that plugs into the maf?

If yes, I had something similiar with my (sr20) IACV. I pulled the plug too hard and 2 of the wires came out. I thought the valve itself was damaged so I replaced it with a brand new one only to have the same problem (stumbling idle, wanted to die, did die, etc...). What happened was the wire insided of the plug was not making contact with the IACV plug.

Make sense? I know I tend to ramble some times. Let us know what happens

Later

[steamer1227]

Yeah when i was replacing the power steering belt i must have bumped the MAF sensor wires and pulled the one wire completely out of the terminal.

I tried to start the car without knowing the wire was pulled out.the car did not start. Then i saw what had happened and tried to fix it by replacing the termianl.

the car still wouldnt start.

I ended up buying a Junkyard MAF sensor and replaced it, and then the car started and ran.

I was driving the car two days ago and for a every day before. The car would run. (it still had the stumbling to it at idle but i would still drive it.)

After i was driving it two days ago. I parked it like normal. No idication that anything was wrong.

The next day i come out try to start the car as i always would. and it would crank but wouldn't fire over.

I kept trying and after about 10 min. I finally got it to start, but it ran very bad.

anything more than light on the throttle it would bog down so hard like it wanted to die. also at full throttle it would take off like a bat out of hell.

I limped it over to my mothers house where its at now. And now i cant get it to fire over. Still cranks but doesnt start.

I re timmed the dist. and still nothing.

I didnt think that would be good to spray stuff on the MAF to clean it.

[jaytv1019]

PLEASE do NOT take my word for it, I am just tossing some ideas around but...

I would focus more on the MAF situation. My stock MAF on my SR went out one day. No reason, just decided it was done working. The car would not fire up and if it did it would not stay running. The way that I checked to see if it was bad was you unplug the MAF and the car will start but in limp mode. You will be able to drive it but not really able to go above ~4K and it will idle higher. That is how I knew mine was bad.

You have a different but similar problem. You know your maf is good (or might not be anymore) but your plug could be the problem. They are very sensitive electronics and if there is ANY resistance in the wire it will cause havoc and inconsistant behavior (what you have)

If I were you, I would just upgrade right now to a Z32 maf, get one with a pigtail, that way you replace the plug and can eliminate that from the list of possible problems.

NEXT STEP

I would unplug the maf and see what happens when you try to start it.

Get back to us.

[steamer1227]

is it easy to find one of the z MAF sensors

i heard that they were bigger/ or better then the factory 240sx's

[Ischreiber240]

Sorry that did not help you man, I have cleaned my sensor on my infiniti and 240 and never had any problem with doing that? Well I hope you figure out that prob!

[steamer1227]

Yeah, i tried to unplug that MAF sensor and i tried to start and still the same thing just crank no start. I downloaded the factory service manual for it and now i think im gonna try to test all the senors make sure theyre getting proper voltage. I dont know lol.

like i said she's ver tempermental. lol.

Does anyone know about the z32 maf sensor?I would like to know more.( like how much they run in $, whats the difference between the 240's and z32's)

Thanx

As soon as i figure out what the fix is i'll let everone know

Thanx again for all the sugg. cuz it always help to have a second opinion.

[steamer1227]

OK I RETIMMED THE CAR AGAIN

CHECKED COMPRESSION AND WHILE DOING SO I FOUND OUT THAT MY PLUGS WERE FOULED OUT BAD

EVERYTIME I TRIED TO START I WAS JUST LOADING THEM UP MORE.

I THINK THAT THE INTITIAL PROB WAS THAT IT WAS VERY COLD THAT DAY AND WHEN IT WOULDNT START I FOULED THEM OUT

ALSO THE CAR DOES NOT STUTTER AT IDLE ANYMORE

SO I THINK THAT I MISS TIMED IT BUT IT STARTS AND RUNS SO THANK YOU ALL FOR THE SUGG.

[480sx]

Glad to hear that you got your car running.

As for your questions about the Z32 MAF it is not a plug and play upgrade. You need either a SAFC or a reflashed ECU to handle it. The stock MAF for the KA is fine, you only need an upgraded maf if your are going turbo, or plan on a monster NA build.