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Old 12-04-2014, 10:01 AM   #1
EricCampos97
 
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240sx Is Limping
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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Old 12-04-2014, 11:07 AM   #2
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does it hesitate at a certain rpm? or just randomly
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Old 12-04-2014, 11:09 AM   #3
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Originally Posted by bboyclo View Post
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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Old 12-04-2014, 11:13 AM   #4
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What's you maf voltage with key on and at idle?
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Old 12-04-2014, 03:18 PM   #5
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Originally Posted by S14DB View Post
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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Old 12-04-2014, 04:43 PM   #6
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I'm not to sure on how to check that man


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Do you own a multimeter?
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Old 12-04-2014, 04:47 PM   #7
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Do a tune up and check for boost leaks
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Old 12-06-2014, 12:13 AM   #8
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Limp Mode
My Rb25det S13 is in " Limp Mode " I changed the MAF sensor but it did no good. Any suggestions?


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Old 12-06-2014, 02:19 PM   #9
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Sounds like you should check the wiring to the maf, and the voltage it is giving off.
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