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HELP !!! heater will not heat ( 99 Expedition )
i have went through the heating system with the service tech. at the dealership and he tells me theres nothing wrong with the heating .. the engine is at it's correct running temp. , all the vacuum system is at correct levels have been tested with a vacuum pump , the blend door is working...- Tiny108
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- Replies: 1
- Forum: Engine & fuel engineering
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5.4 triton constant popping in exhaust
when i start the SUV the popping in prominent as it warms up it quietens slightly , fuel mileage has went to the (CRAPPER).. dealership service cant narrow it down scoped says (bank 1 sensor 2 lean).. all O2 sensors are new , new coils and plugs , octane makes no difference .. anyone have any...- Tiny108
- Thread
- Replies: 12
- Forum: Engine & fuel engineering
