Not strictly. A presuppositional approach assumes the truth of scripture and demonstrates the impossibility of knowledge without this assumption. In presuppositionalism, the internal consistency of Scripture is an assumption, in evidntialism, it is one of the things to be proved. A presuppositionalist might defend the internal consistency of Scripture as a way of defending one of their assumptions, but they wouldn't use this to prove the truth of Scripture, the way an evidentialist might, only to negate an attempt to prove the falsity of scripture. And they would not seek to use external sources to prove the truth of it.

Also, this is my first post in philosophy/ apologetics; pleasee all go easy if I am mistaken.

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T W Hopper
Member, Presbyterian Reformed Church
Currently between churches since PRC closed here - attending Crossroads Christian Church.
Canberra, Australia.