My 240 has been lagging dramatically for over a month now and its really bugging me since a lot of mechanics are telling me something different. It runs smooth from 1-3.5k rpm then it dramatically lags after 4, it still lags when its on idle when i try to rev it. Me and my friend checked the computer code and it gave off the knock sensor and I just changed it hoping that was the problem but it wasn't. I also checked at the muffler shop if it was the CAT if it was clogged up and it was perfectly fine. I also have no check engine light. These are the things i've just replaced. I knew 240's were a headache but goddamn.
O2 sensor
NGK spark plugs
Fuel lines
Oil/oil filter
Knock sensor.
Major lag! Please help!
Re: Major lag! Please help!
i had this exact same issue and it ended up being a really simple solution, i picked up some MAFS cleaner from autozone, sprayed it out thoroughly and now she runs like a champ!
Re: Major lag! Please help!
Well I pray and hope that the problem is this simple. I'll clean my mafs for the heck of it and i'm going to have my fingers crossed. Thanks.srjake240 wrote:i had this exact same issue and it ended up being a really simple solution, i picked up some MAFS cleaner from autozone, sprayed it out thoroughly and now she runs like a champ!
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allenms240
- Posts: 661
- Joined: Sun Mar 08, 2009 5:54 pm
- Car: 1991 Nissan 240SX
Re: Major lag! Please help!
the MAF sensor is a common culprit. That, or try your fuel filter as well.
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Flicktitty
- Posts: 4253
- Joined: Tue Sep 21, 2004 11:56 am
- Car: 1989 Nissan 240sx 2JZ-GTE Swapped
1994 Toyota Supra
2019 Lexus GX460
1992 Lexus SC400
Re: Major lag! Please help!
Maf sensor, Fuel filter, maybe a sticky/bad injector.
Re: Major lag! Please help!
Well my mafs and fuel filter are fine, but now I have to look up how to check for faulty fuel injectors.Flicktitty wrote:Maf sensor, Fuel filter, maybe a sticky/bad injector.