Join Date: Nov 2009
Location: Sacramento, CA
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EV2 pyrometer problem
I've just installed an ISSPRO EV2 pyrometer & trans temp gauges (new, from US Diesel Parts), and am having an issue with the pyrometer.
The gauge reads 0 all the time, unless the thermocouple is removed from the fitting in the manifold. When I do this, and just let it hang in open air, the gauge shows ~80-90 degrees (current ambient temps here). When the thermocouple is replaced in its fitting (or even just touched to it), the gauge will either peg out, or bottom out.
Originally, I had the third (copper/ground) wire in the harness connected to the gauge (as per the included instructions). It was suggest to me that this could be causing the problem (having an extra ground connected), so I disconnected it from the gauge - which made no difference.
Is this a problem with the thermocouple? Or with the gauge/wiring?
Thanks for any help.
2005 F350 SD Crew Long Bed FX4 Dually Lariat, 6.0L PSD. 4" catback, 3.5" dp & cat delete, Sinister Diesel coolant filter; Bulletproof EGR cooler, ARP studs. 380k+
Last edited by CassMori; 07-23-2011 at 12:30 PM.