2006 Nissan Armada Q&A
2006 Nissan Armada Question: Fuel pump damaged catalytic converters
Service engine light came on a month or two ago. Failed state inspection report indicated both catalytic converters failing. Dealership says that although they replaced the catalytic converters less than 1 year ago, they need to be replaced again, along with the fuel pump, which was just recently replaced (by another shop)after a problem with chugging, shuddering, dying (even in motion). I took it back to the other shop, and they said nothing wrong with it, turned off the check egine light and offered to get it inspected (suspicious). The mechanic says that the fuel pump cannot damage the catalytic converters and that Nissan service is taking me "for a ride". ?????? Don't know who to trust here. Any similar experiences with fuel pump and catalytic converter? - scottcompany
The fuel pump has nothing to do with the catalytic converters.The only thing that will plug a converter is coolant or oil.If you just replaced your fuel pump there should be a warranty on it. - andygrace
A weak or failing fuel pump can cause power loss due to lower fuel pressure and lean mixture conditions. This rarely causes a Check Engine Light to illuminate and should be repaired to avoid cataly...