NEW D-MAX /MUX /COLORADO FORUM

NEW D-MAX /MUX /COLORADO FORUM
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 Post subject: Wont rev past 3400rpm
PostPosted: Wed Sep 11, 2019 10:20 am 
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Joined: Wed Sep 11, 2019 10:13 am
Posts: 1
I have a 2015 Dmax and have developed a problem. When the revs climb up to between 3400 and 3600 rpm it drops power and acts like its hit a very harsh rev limiter. No DTCs are logged. Ive removed the super 4 module, replaced the suction control valve, bypassed the filter and removed the throttle controller. My mechanic has plugged his laptop to and noted that it drops fuel pressure as it happens. Any ideas guys?


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PostPosted: Wed Sep 11, 2019 11:55 am 
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Joined: Sat Oct 12, 2013 5:36 pm
Posts: 1573
I presume that mechanic is reading the inj pressure. The fuel pressure, ie, supply to inj pump is not monitored to my knowledge. Perhaps it is the fuel pressure regulator in the back of the inj pump.

If you take the tank cap off suddenly does the tank breathe in a big sigh. Does it happen all the time or only when full or for a while after filling?

Not a sensible idea to by pass the fuel filter at any time.


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