Intake Install went bad now car is CASHED!

ONLY for ADVANCED technical discussion about the 240sx!
mickeyd420
Posts: 76
Joined: Mon Jun 25, 2007 1:55 pm
Car: s13 92 se

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OK so awhile back i had bought a aem intake off some guy here. Came with intake and a maf with some clipped wires attached.. Now the maf was black so i believe it was off a s14 model. Since i dont no much about ****, i had my friend who is a mechanic install the intake. He took off the old intake and mounted the new one. He then had to splice my wires to connect it to the new maf. The car had started but wasn't running stable. After he kept trying the car ended up stalling and he then proceeded to put back on the old intake. When the old intake and old maf was back on the car was still stalling and running like ****. I then noticed that the car was leaking oil after i just had that fixed so i sent it back to my shop that did the oil leak work. Now that mechanic is saying i need a new mass air flow sensor with connector. Is this correct? Did i buy that intake just too look at it. wtf i am i doing here! All help appreciated and if i do need a new one maf, im paypal ready


mickeyd420
Posts: 76
Joined: Mon Jun 25, 2007 1:55 pm
Car: s13 92 se

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btw is it possible that both mafs got dirty .... and if this car is leaking oil am i wasting my time.. my ka got almost 150000 on it, should i garage this biotch sell the enigne for parts and put a ca18 in it... my parents are tired of fixing it ....DONT BUY XTD...... and im tired of having my car in and out of the shop, but i refuse to get a riced out honda... SHOW ME THE WAY BOYS

zero_gripS13
Posts: 619
Joined: Sat Oct 16, 2004 6:15 am
Car: soon to be 95 s14 hopefully

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mickeyd420 wrote: I should garage this biotch sell the enigne for parts and put a ca18 in it...
maybe im just too bias!!


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placham
Posts: 664
Joined: Sun Mar 19, 2006 6:54 am
Car: 1992 Geo Prizm (4AFE)---Gone
1990 Nissan 240sx Coupe (RB20DET powered),
1994 Toyota Celica GT (3SGTE swapped), 1995 Nissan 240sx KA24DE,
2011 Nissan Sentra SER Spec-V

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If car ran fine, then may be it's something with intake install. Probably one of the vacuum line is off, making car run like $hit. Why you change your MAF for?

UNVMY240
Posts: 129
Joined: Sat Mar 31, 2007 2:43 am
Car: 91' 240 LE KA24DE

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Well I always work on my own ride and pay for any repairs. Its hard to say in your situation.. I personally would find out what was leeking and where. As far as the MAF disconnect it with the car running at idle. The car should idle alittle hight but run smooth. But as soon as u give it gas it will bog and die. Also your running issues could be alot of things. The injectors may not be firing right, could have an intake/ vacuum leak. Quick check for vacuum leak is spray the intake while car is cold with brake clean and see if it smooths out. Just my 2 cents I say keep the car and learn form it.

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youngun21a
Posts: 293
Joined: Mon Mar 13, 2006 7:55 am
Car: 240sx 1993 Automatic

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My MAf don't do that I diconnet it and it will run for a couple of second then it will die.

mickeyd420
Posts: 76
Joined: Mon Jun 25, 2007 1:55 pm
Car: s13 92 se

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the car was running fine before this install so its def. something to do with the maf, he had to splice some wires... after he did that the check engine came on and the car wouldnt run rite.....my mechanic is saying the maf got wet or dirty

danielsan
Posts: 349
Joined: Tue Apr 08, 2008 7:41 pm
Car: 1991 240sx coupe SE

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why didnt you just use the original maf? its probably something to do with the wiring job your mechanic did. if it was running fine before the intall then have him check the wiring again.

mickeyd420
Posts: 76
Joined: Mon Jun 25, 2007 1:55 pm
Car: s13 92 se

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yo guys im still having a problem,, i had replaced the maf with a connector and the car is still running like ****. My mechanic is very experinced and runs a very busy shop. He is telling me now to grab a computer for the maf wasnt the issue, what could of happen here i was just trying to install an intake, this is going on too long now

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onosqv
Posts: 5675
Joined: Wed Aug 07, 2002 12:32 pm
Car: '92 240sx Vert
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1) Stop going to that mechanic.

2) Install the STOCK system. Intake systems DO NOT do this to cars - it's the installer who is f'ing it up.

3) Use the original MAF for the car - undo the splicing - that is just straight up stupidity to run anything other than the stock MAF for a car w/ just an intake & stock ecu.

Oil leak is something completely separate, trace where it is coming from if you can, but the intake issue should be an easy fix if you still have all the original equipment & maf.

Once you've returned everything to stock, then put everything back in one by one.

There are really only 2 things that could have gone wrong when he installed your intake

- the maf splicing f'ed up the maf or you car (hence return this section to stock)- he didn't connect a vacuum line (hence putting the stock tubing on for now - that takes about 10 minutes).

Vegascorbin
Posts: 732
Joined: Sat Nov 24, 2007 9:56 am
Car: 1990 240sx dirt track race car

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What he said.

If you change something and it all goes to Sh%T then un-change it.

mickeyd420
Posts: 76
Joined: Mon Jun 25, 2007 1:55 pm
Car: s13 92 se

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i had a "buddy who is a mechanic " TRY to install the intake, after he fluxed it up i took it to my mechanic.. The oil leaks are completey diff. I replaced the maf and that didnt do anything. My mechanic said he has tryed everything, something as simple as a vacum line wouldnt be the problem

sirgilbert357
Posts: 69
Joined: Sun Dec 30, 2007 10:00 am
Car: 93 240sx KA24DE

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mickeyd420 wrote:i had a "buddy who is a mechanic " TRY to install the intake, after he fluxed it up i took it to my mechanic.. The oil leaks are completey diff. I replaced the maf and that didnt do anything. My mechanic said he has tryed everything, something as simple as a vacum line wouldnt be the problem
I dont mean for this to come across as rude, but Im probably just saying what everyone here is thinking:

With all due respect, your "buddy mechanic" is an idiot if he effed up a freakin intake install. And hes even more of an idiot if he just replaced you good working MAF for no reason. And this other mechanic guy you took it to after that did no better. They BOTH should have asked you if there was a reason you were electing to have the MAF replaced. If it isn't broke, dont fix it! Now intake installs are about the easiest thing you can do to freakin car. If you mess that up, you shouldn't be under the hood, period. They even come with instructions.You never actually bothered to check for vacuum leaks did you? Please don't come on here and start a thread asking for help and then ignoring the help that is offered. The guys on here know what they are talking about for the most part. A vacuum leak can cause all kinds of problems and coupled with your incorrectly installed, who knows if its working MAF, you're going to have all kinds of issues. The oil leak is indeed a separate issue. Go to another mechanic or to a reputable national chain and get ready to bend over. You might as well fork over the cash to have this done right since you obviously aren't confident enough to handle an intake install on your own. And you might want to read this again:

1) Stop going to that mechanic.

2) Install the STOCK system. Intake systems DO NOT do this to cars - it's the installer who is f'ing it up.

3) Use the original MAF for the car - undo the splicing - that is just straight up stupidity to run anything other than the stock MAF for a car w/ just an intake & stock ecu.

Oil leak is something completely separate, trace where it is coming from if you can, but the intake issue should be an easy fix if you still have all the original equipment & maf.

Once you've returned everything to stock, then put everything back in one by one.

There are really only 2 things that could have gone wrong when he installed your intake

- the maf splicing f'ed up the maf or you car (hence return this section to stock)- he didn't connect a vacuum line (hence putting the stock tubing on for now - that takes about 10 minutes).

That is all, good luck.

mickeyd420
Posts: 76
Joined: Mon Jun 25, 2007 1:55 pm
Car: s13 92 se

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ok so i got the car back and it turns out the computer fried out... The car is still running very crappy, there is a lag time when i hit the gas.. i am gonna take the car to get a second opinion ..can anybody suggest why the car is running laggy and choppy

Cone Junky
Posts: 622
Joined: Sun Jan 20, 2008 8:06 am
Car: S13 fastback
BMW e46 328i
Location: San Diego

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Sounds like your "mechanic" friend fried the ECU by wiring the incorrect MAF to the car.Like everybody else said, why the heck did you rewire the MAF?!

mickeyd420
Posts: 76
Joined: Mon Jun 25, 2007 1:55 pm
Car: s13 92 se

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it was rewired to fit a maf from a s14...but thats not important now for i"returned that section back to stock" the car is now running but is very laggy

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Black on Gold
Posts: 6542
Joined: Wed Oct 12, 2005 5:20 pm
Location: Winterthur, Switzerland

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Another reason why DIY is better

240stile
Posts: 11
Joined: Thu Sep 06, 2007 12:58 pm
Car: s14.5 (zenki)

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the throttle plate could be dirty. you might want to take off your intake and spray some carb cleaner around the plate and wipe it off.


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