2005 Mercury Monterey Q&A
2005 Mercury Monterey Question: rough idle
Our van has been running rough and misfiring for about a week. We have had the spark plugs and wires replaced as well as the catalytic converters. Each repair corrected the problem for only about a day. The check engine light is on again now, and the previous error has been "cylinder 1 misfire". What could be the problem now? Could gas with ethanol cause this problem? Thank you!! - ericandus
The question I would have is: What are the failure codes now? If you are still sitting with a cylinder 1 misfire issue, you may want to look at the fuel injector on the affected cylinder for problems. Why did the Catalytic Converters get replaced? Ethanol is supposed to be used only on Flex Fuel vehicles, unless it's used as mixed nominally with conventional fuel at the refinery. I do not believe your Monterey is Flex Fuel capable. - DaveJHM
The problem started out with the following errors! 1. crankshaft position sensor fault, 2. misfire detected cylinders 1 and 3, and 3. general check plugs & wires. Check was done at auto parts store...
Last night it was very cold and damp out. I let the van warm up and the windows took along time to defrost. Today I started out for work I didn't let the van heat up and the van hesitated like craz...