Cold Start Of Hummer H1 Engine In Winter Time

[njlondon]

[quote name='dbot' date='07 July 2010 - 06:02 AM' timestamp='1278496922' post='18955']

Does the diesel heater have a fuel pump? if so, where does the power come from - of the batteries then you will have a problem.



The cold start issue with the H1 is largely due to the low crank speed that result from the cold engine oil and cold batteries. The glow plugs first drain the stressed battery then you try to crank over the truck you don't get the required RPM to start due to the low battery. The engine needs both a minimum RPM (battery dependant) and temperature (provided by the glow plugs) to start.



110v powered Battery heaters will increase the battery output and the block heater will keep the oil warm. With that you should not need a diesel powered heater. If you drive the truck every day, you can likely dispense with the battery heaters since the battery will presumably be fully charged.



- at least from what I have seen here when it get really cold.

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Not to beat a dead horse, but put in two Odyssey batteries and you will have cold crank galore in the coldest weather.



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