One problem related to radiator has been reported for the 1998 Lincoln Navigator. The most recently reported issues are listed below.
The radiator in my Navigator failed due to busted core tubes and seaking seams. I have contacted the dealership and they requested an invoice with reason for replacement. I sent this information to them and they never contacted me as to whether I would be reimbursed. I then called themn and they said they would return my call of which they never did. I then filed complaints with consumer protection agency, fla. Dept. Of agriculture & consumer services, and called other agencies. Since these agencies said I did not have any recourse, because the SUV was locally repaired and the Lincoln/Mercury dealer did not do the work I didn't have a leg to stand on. Since the first incident the radiator has had to be replaced again, with the same problem. I am a little old lady 59 years old who does not miss use my vehicle, therefore I suspect I have been taken advantage of by requesting repayment of the repairs made last October.