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So the water pump started leaking pretty severely out of no where. Got a new Motorcraft one and installed it today. Went pretty smoothly. It was stuck to the block pretty good but a few good whacks and it came right off. Got her all buttoned up and filled with Water Wetter + distilled water for summer. No leaks. The problem is now I have a really bad misfire. Like the car will barely stay running in drive with the AC on. No codes. My cheapo “scanner” and phone app says the fuel system status is “open loop due to system failure”. The plugs and wires are literally less than 1k miles old. No problems whatsoever before the water pump change. The only thing I can think of is that I did move the car across the parking lot with the water pump off the car. It was running for literally less than 30 seconds. Does anyone have some ideas, this is my only car at the moment and I have to go to work misfiring like crazy :/ I can post screen shots of my phone app scanner data if any of you know how to interpret it, I don’t understand the vast majority of it.
What I’m thinking right now is that it’s just running really really rich causing the misfire, based on the open loop thing. But I have no idea what would cause that or even if that’s what’s happening.
Thanks for your time.
What I’m thinking right now is that it’s just running really really rich causing the misfire, based on the open loop thing. But I have no idea what would cause that or even if that’s what’s happening.
Thanks for your time.