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1HZ Rev Gauge and Idle isssues

Posted: Wed Oct 29, 2014 9:44 am
by wsnownz
Hi all, truck is a HZJ73.
Start it up first thing in the morning, rev gauge won't work for 5 minutes or so then kicks in. Sender issue?
Also the idle is fluctuating. Some times sits at 600-700, other times up around 800.
New to this engine so unsure, cheers