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JSS1439's avatar
JSS1439
Explorer
Jul 29, 2014

Cummins Onan Generator running ruff at start up

Hi all, I have a Cummins Onan 5500 generator model HGJAB Spec E that on start up runs very ruff and smokes like crazy. It will stall out and give a 37 code about 3-4 times before eventually smoothing ...
JSS1439's avatar
JSS1439
Explorer
Jul 29, 2014
AK49er wrote:
Hi Scott, I have a little 2.8 that does the same thing sometimes, I am waiting for one of the Onan Guru guys to answer your question so it will help me.


Really... Are you getting the same 37 code also?

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