I really appreciate the tips & advice. But can anyone recall any failures of the pumps due to heat. The problem I'm having has something to do with heat. If the days are cold it will continue running for many miles 100+ but as the days warm the faster it fails faster.
When it coils down after failing it will start back up & run great but not for long it's a puzzle to me. Changing out pump an relay switch tonight. Then go for a drive tomorrow. It will be in the 70s so shouldn't take long to know if problem was one of those 2 things. One more question .......I think there is only 1 relay switch for both pumps ...is that correct ?