Help! Surging after start.
The truck is surging after its started for about 15-20 seconds then levels out. The truck is deleted with a MM3 tuner.
The MM3 shows rail pressure to fluctuate almost 1000psi while surging. Right now I’m thinking possible weak lift pump or maybe an issue with the FCA.
Is there anything else I should look at?
2014 Tradesman
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Re: Help! Surging after start.
Re: Help! Surging after start.
Quote:
Originally Posted by
IGOTACUMMINS
Who tuned it?
Diesel performance Texas
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Re: Help! Surging after start.
Quote:
Originally Posted by
RamCountry
Diesel performance Texas
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Doh!! You may have stolen/hacked tuning! That guys been banned I believe.
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Re: Help! Surging after start.
Quote:
Originally Posted by
TH-64
Doh!! You may have stolen/hacked tuning! That guys been banned I believe.
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Yep! [emoji53]
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Re: Help! Surging after start.
Is there anyway to tell if its a hacked tune?
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Re: Help! Surging after start.
Quote:
Originally Posted by
RamCountry
Is there anyway to tell if its a hacked tune?
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Not really, but that company has a bad rap sheet!
Re: Help! Surging after start.
Quote:
Originally Posted by
RamCountry
Is there anyway to tell if its a hacked tune?
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Dunno. You just install the tuning, or was it ok at first?
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Re: Help! Surging after start.
It started about 6 months after I deleted the truck.
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Re: Help! Surging after start.
Ok. In that case it may be a separate issue like you mentioned. Also could be the fuel rail relief valve. Any codes on your MM3?
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