DEEz Posted January 2 Report Share Posted January 2 (edited) I've been a member here a while & have had/have Escapes, Edges, Lincoln Mkx & now a mercury Mariner in the family which have similar systems. I recently bought a non running 2010 mercury Mariner with the 2.5L (non-ecoboost) & I've come across strange symptoms. No codes showing from my basic code scanner (the battery was dead & had been sitting up almost a year). I found 1 ignition key/fob (out of the 2 key/fobs i have) that would not activate the starter (i even replaced the fob batteries), the dash screen will show "No Mykeys programmed" & 2 Admin keys programmed). I'm NOT getting a fast flash of the theft light on the dash (did get the fast light with the bad key & likely was in use when the vehicle shut off with the previous owner). The engine will run (& stay running) on starting fluid but I'm not getting any rpm input from my foot on the throttle (throttle by wire). Without using starting fluid the engine will start & run for like 3 seconds, i can recycle the key a couple times until i hear the pump activate again & it will start/run 3 seconds again & again (seems like PATS is responsible but I'm not getting the fast dash light). I don't see a manual access port to check the fuel pressure. When I pull 1 of the 3 connectors off the computer & reinstall it i do hear the throttle body operate & possibly sweeping (resetting). I tried connecting forscan the other day with a "no connection" as the response but that was before I found i had 1 bad key fob so I plan to try it again. Oh, when I was checking the relays under the hood I noticed 1 of the radiator fans would operate constantly (wasn't sure if its a separate issue or a symptom of the main issue. Does anyone have any incite? Thanks . Edited January 3 by DEEz Quote Link to comment Share on other sites More sharing options...
DEEz Posted January 3 Author Report Share Posted January 3 "Unable to connect to vehicle" with forscan. No issues with it connecting to a 09 f150 & 2017 Edge in the yard. . Quote Link to comment Share on other sites More sharing options...
Haz Posted January 4 Report Share Posted January 4 No personal insights to offer in this case, just subject-vehicle information and topical diagnostic procedures from Ford's 2010 Gasoline Powertrain Control / Emissions Diagnosis (PC/ED) Manual in this and another immediately following post, due to Forum file attachment limitations... Document download links> Fuel Charging and Controls - 2.5L - 2010 Escape-Mariner Workshop Manual.pdf Fuel System Pressure Release - General Procedures - 2010 Escape-Mariner Workshop Manual.pdf Quick Connect Coupling - General Procedures - 2010 Escape-Mariner Workshop Manual.pdf Fuel System Pressure Test - General Procedures - 2010 Escape-Mariner Workshop Manual.pdf Throttle Body - Removal and Installation - 2.5L - 2010 Escape-Mariner Workshop Manual.pdf Throttle Body - R&I Enhanced Image - 2.5L - 2010 Escape-Mariner Workshop Manual.pdf Fuel Rail and Fuel Injector - Exploded View - 2.5L - 2010 Escape-Mariner Workshop Manual.pdf Fuel Rail and Fuel Injector - Exploded View Enhanced Image #1 - 2.5L - 2010 Escape-Mariner Workshop Manual.pdf Fuel Rail and Fuel Injector - Exploded View Enhanced Image #2 - 2.5L - 2010 Escape-Mariner Workshop Manual.pdf Fuel Rail - Removal and Installation - 2010 Escape-Mariner Workshop Manual.pdf Fuel Pump Control Module - Removal and Installation - 2.5L - 2010 Escape-Mariner Workshop Manual.pdf Quote Link to comment Share on other sites More sharing options...
Haz Posted January 4 Report Share Posted January 4 Additional... Document download links> Pinpoint Test DD - Fuel Rail Pressure (FRP) and Fuel Rail Pressure Temperature (FRPT) Sensors.pdf Pinpoint Test KC - Fuel Pump Control Module.pdf Good luck! Quote Link to comment Share on other sites More sharing options...
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