Join Date: Jan 2013
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It will cycle for a few minutes till you reach 20mph or so.
I have seen it stated that the grids will cycle only to a certain speed, but I think that is only for 2nd Gen trucks. I have run a 89 1st gen system and my current 93 system and neither one will drop out at any road speed. It is based on engine temp and air intake temp from what I can discern from my own observations.
Farmtruck....as mentioned the Non-IC trucks (89-91) had the grid heaters set to come on a much colder temp then the later 91.5-93 trucks. My 89 system would not "actively" cycle the grid heaters, that is the WTS light would come on unless it was -15*C or colder, but even without the WTS coming on the system would still passively cycle the grid heaters which you could see by the volt meter dropping slightly during warm up.
The Black box's would need to be found used, and they don't come up very often. Do you have a constant ignition 12V to your KSB, that can cause excessive smoke as well.
1984/93 Dodge Crewcab, W350, 1 Ton SRW, long box, 370K Km's, hydroboost, 366 spring, fuel pin to deep side, 14cm housing, Piston LP, PS IC, Isspro Boost, Pyro and tach, NV4500, 29 spline NP205, 3.54's.