Thankfully, one of the good things about the TS-style chips and switches is that they are VERY resilient to EMI and RFI (both types of electrical interference) that other chip styles are subject to.
These chips have a microprocessor that controls the memory location switching instead of a direct link between the switch and the memory chip. This cuts out the interference issues and the small voltage oscillations that occur when a switch is turned on or off. It also switches instantly so under normal switching, there is no "bump" or loss of data when going to another set of addressing allocations on the memory chip.
If you have issues with merely touching the switch....then I would say that you have a switch issue. It's just a set of contacts and a wiper....if there is an open between either contact at any time, the chip would probably default to position 1; as if there were no switch connected.
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Tuning, PCM flashing, and burning chips for 7.3s since 2008. Repairing all aspects of 7.3L Powerstrokes for 25 years.
Eight 7.3L PSDs in the driveway including a 1994 Crown Vic and 1973 F100/2002 F350. Looking for the next victim.
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Tue, August 11th, 2009, 01:44 PM
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