99 Blazer w/ Newly installed engine cuts off when reaching operating Temp!?

2 messages, Last post on Jul 26, 2009 at 12:17 PM

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#1 of 2 99 Blazer w/ Newly installed engine cuts off when reaching operating Temp!? by deazill9073 Jul 20, 2009 (5:52 pm)
I have a 99 Blazer that has a newly rebuilt engine that is cutting off once reaching operating temperatures. We have hooked up to a scanner and it is not giving us any codes. Although we can see there is no injector pulse. When it does restart it runs very very rough and then it will suddenly run perfect, and then back to running rough...any ideas? All grounds are connected and everything is reconnected as it should be in regards to the rebuilt engine...any ideas?!?! I am at my wits end..
#2 of 2 Check Engine Light-IAT Sensor by debbiecampione Jul 26, 2009 (12:17 pm)
I am getting a code for the IAT Sensor- Voltage High. Does anyone know where this is located to plug back in? Any help would be appreciated.