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Thanks for all the help just replace the smart start box all good now!!!

Thank you for the help I ordered a new tsu with the yellow band that matches the one in my truck I’m so hoping that does the trick everything was working great until my voltage reg went and juice my system with 37 volts spikes ever so often mid this doesn’t solve it I’m going to do the new...

Thank you very much for the help I found a post that shows how to run new glow plug wires and bypass the controller with an external bottom That’s probably my best bet to fix the problem ���� kills me to by a new box for $700+ and possibly have it happen again

Just unplugged my tsu and replugged it in same problem I check the ohms at the glow plugs got 2.9-3.1 tested to see if I have power at the plug boot and nothing when I turn the key on I did turn the key on with the tsu unplugged and the wait did the same quick flash also when I turn the...

Thanks bud I will try that when I get home if it still does the quick blink should I order a new tsu could it be bad one other thing I found is when the truck is warm the quick blink goes away like it is sensing the engine temp

Good morning im new to this sight but have found it to be a great help thanks for all the info and posts I have a 1989 m988 my voltage reg went and was spiking 37v at times I fount this out when my wait light just did a quick blink and my truck had a hard time starting I replaced the...