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27th June 2019, 10:30 PM
#181
Patrol God
Originally Posted by
Zero Five
Do i have to Unplugged the battery first before i remove the maf sensor to be cleaned? or i have to remove the maf sensor first and clean it then before putting it back in thats the time i have to unplugged the battery? thanks
Yes mate all ya have to do is disconnect battery for 30 odd minutes before refitting dry maf..
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27th June 2019 10:30 PM
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27th June 2019, 10:39 PM
#182
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Very fair question mate, keen to learn also!
Assuming the ignition is offski should in my nuffy theory be fine, although I did nearly set a 1961 model 6v VW beetle alight installing a fully sic FM/AM radio headset.
If in doubt, and or welding aboard, disconnect has always been my safe go to for the added extra 2 minutes work !
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27th June 2019, 10:42 PM
#183
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Whoops, wrong answer again :-)
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27th June 2019, 11:57 PM
#184
Patrol Freak
MAF sensor clean. Am I doing it wrong, always only just unplug elec connector, remove sensor, give it a squirt, let it dry and then just put it back in / connect and go. No problems to my knowledge.
2008 GU WAG ST Manual CRD - To do the job
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28th June 2019, 12:02 PM
#185
I am he, fear me
ECU's are constantly learning and adjusting some engine sensor and operating conditions but it isn't an instantaneous process more a running average sort of deal.
If you disco the battery for 30 minutes it forces the ECU to immediately start to go thru a relearn process for adjusting individual engine parameters starting from factory or default ECU settings.
IE the ECU starts from factory trim and ends up at its new trim
If you don't disco the battery and only unplug and clean the MAF then the ECU maintains its existing trim settings and adjusts its trim starting from that point rather than default.
IE the ECU starts from the prev trim and ends at its new trim
FWIW I never bothered forcing a relearn unless I changed the MAF or the MAF was filthy and/or threw codes prior to cleaning as IMHO a relatively clean and functioning MAF won't affect ECU trim all that much after a clean so trim is probably closer to existing than defult.
Unless you are operating in really grotty environments or getting a lot of Turbo Surge blowing oil film back over the MAF a clean every 30 to 40 thousand K's or so is more than adequate for a normally functioning engine and IMHO the ECU doesn't need a forced relearn
Last edited by the evil twin; 28th June 2019 at 12:09 PM.
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28th June 2019, 12:55 PM
#186
Patrol Freak
Far bit of road dust around home, guess do maintain air filtration thru life though. Probably has paid off in line with your comment. First 80 thou ks did not go near MAF but have clean every 10 thou ks since (all up 160 thou ks since new veh).
Then again have had the battery out many times for mods..hahaha
Last edited by Bidja; 28th June 2019 at 12:59 PM.
Reason: battery out many times
2008 GU WAG ST Manual CRD - To do the job
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12th February 2020, 05:17 PM
#187
So went to test my maf today and mine does not match any listed here. I have a 6 pin plug with 5 wires. It has nothing in the first pin and then its white, yellow with blue line, yellow with blue line, pink, black. Any ideas on how to test this?? 07 crd auto
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