Limp Mode

[EricCampos97]

So I've had my 240sx for about a month now, has an rb25. It was driving just fine until it started limping, wouldnt rev over 2500 RPM, & black smoke would come out the exhaust. I was told it could me my MAF sensor so I replaced it. It ran a lot better but would have an occasional limp or hesitation but NO black smoke. What would you guys recommend to check next ? Or does it just take a while for the ECU to update or something? Thanks.


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[bboyclo]

does it hesitate at a certain rpm? or just randomly

[EricCampos97]

does it hesitate at a certain rpm? or just randomly


It used to on a certainty rpm, i test drove it today after I installed it & I guess it was mainly random cause it was good most of the time


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[S14DB]

What's you maf voltage with key on and at idle?

[EricCampos97]

What's you maf voltage with key on and at idle?


I'm not to sure on how to check that man :(


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[S14DB]

I'm not to sure on how to check that man :(


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Do you own a multimeter?

[Kingtal0n]

Do a tune up and check for boost leaks

[EricCampos97]

My Rb25det S13 is in " Limp Mode " I changed the MAF sensor but it did no good. Any suggestions?


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[!Zar!]

Sounds like you should check the wiring to the maf, and the voltage it is giving off.