Nissan Primera P12 1.9 dci mpg problems |
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navodruck 
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 Posted: 25 Mar 2013 at 10:27am |
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Hello guys again, im returnig to my mpg problems,
had 1 week of my job, so was constantly going fishing every day, only straights 30-80 KM, no city driving. dont pass 2000 rpm, and still only 7L/100 filling again up to brim . also here was cold last week -15 - -5 C. Regarding MAF, Just for myself i bought one new chinese MAF here at local shop(26 euro) , fitted it ,and got strange responses from mine nissan, past 2000 strange sounds came from bonnet. so pluged in mine original maf, and sounds disapeared. So maybe mine maf working normal ? as i dont see diffirence in unpluged or pluged in oem maf driving. |
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Primera P12 2005 1.9 dci
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wickydude
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Posted: 25 Mar 2013 at 12:11pm |
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The cold does not help getting better mileage in any case
 Mine is now also doing 6,3 ish l/100, even on longer trips (100km) at temps between -4 and +2 with high windspeeds. In what area are you? Oh, and those chinese mafs are better left in china... |
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 Ex: Primera P12 1.9dCi Estate<b |
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navodruck
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Posted: 25 Mar 2013 at 12:57pm |
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im From Lithuania,
regarding chinese maf, if i want to return them back to shop, but hell ! i need firstly to run diagnosis, that this maf is really not working, dont know how to even do the diagnosis, to prove seller that this maf is not working normal with my primera, anyone know what voltages should be in diffirent range of rpm ?
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Primera P12 2005 1.9 dci
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wickydude
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Posted: 25 Mar 2013 at 1:29pm |
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Over here we have the right to return any purchased item within 7 days, without any reason. Can't imagine that would be different at your place.
I'm not sure the maf puts out a varying voltage, could also be pulses. The EC-F9Q section of the manual says only that you should measure 0.6v +-0,1 between terminals 1 and 2 of the sensor, with ignition on and engine not running. |
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Ex: Primera P12 1.9dCi Estate<b |
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redshark1
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Posted: 25 Mar 2013 at 6:08pm |
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Yes, should be no problem returning MAF especially as it is not working to your satisfaction.
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See my Nissan Primera P11-144 common faults and fixes guide:
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navodruck
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Posted: 26 Mar 2013 at 7:53am |
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Yes its true,
but these stupid sellers , want the proves that maf isnt working normal, even if i tell them, that car is like choking after 2000 rpms, so now i will try to check voltages. Even maybe this maf is working, but not correct on my car. |
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Primera P12 2005 1.9 dci
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wickydude
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Posted: 26 Mar 2013 at 8:05am |
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Well, then ask them what values tey think the MAF should give.
I'll bet you 10 to 1 they won't know. |
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Ex: Primera P12 1.9dCi Estate<b |
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navodruck
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Posted: 26 Mar 2013 at 8:31am |
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dear friend, can anyone tell me, about checking voltage with ignition ON, ""Check the voltage between terminals 2 and 1 of the maf sensor"" where the hell these terminals are?
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wickydude
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Posted: 26 Mar 2013 at 9:59am |
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Take a look at the service manual,section for Engine control F9Q (EC-F9Q) page 176.
If you haven't downloaded it yet, you can find it here |
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Ex: Primera P12 1.9dCi Estate<b |
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navodruck
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Posted: 26 Mar 2013 at 11:22am |
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ok, 176 page, so i see on botom page, the numbers it is ok,
but the question is how i need to put in tester, how to reach this part, when ignition on, :/
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