No cold start - Maintenance & Troubleshooting discussion in Forkliftaction's forums

Discussion:
No cold start

Hyster S50XM

S# D187 GMC engine closed loop system ,
Unit will not start first thing then after it is started once , starts all day
did some test
the fuel idle solenoid on top of regulator does not open,but once bypassed with jumper wires unit starts
While testing with test probe both sides of plug are hot ?
My question what gives this unit a signal? Relay? cold start solenoid ? or is this controlled by the ECM

Posted 12 Apr 2014 01:45
By pacfork
joined 2 Jun'07 - 55 messages
British Columbia, Canada

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Hi Hytech
Back to this cold start problem , Only has 1 wire oil pressure sender.
broken wire ?
After this unit gets started from cold start it will fire up all the time.
trick on starting this unit is shot of starting fluid.
Yes it has a com port
But we do not have software ,
ECM ? but they are not cheap $1900

Posted 26 Jun 2014 04:51
By pacfork
joined 2 Jun'07 - 55 messages
British Columbia, Canada

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Bypass the oil pressure sensors.possibly broken wire. Or wiring to fuel shut off valve.does it have a comm port ? Then you can check all anti tie downs

Posted 12 Apr 2014 07:02
By HYTECH
joined 10 Apr'14 - 24 messages
Virginia, United States

Here we go again

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