Hunter801 Posted September 13, 2016 Report Share Posted September 13, 2016 I have a 2008 ford edge that I just purchased 10 months ago. I had it to dealer for a recalled fuel tank replacement. A short time ago I had it for a drive which I don;t drive much because it is the wife car. I noticed that soft throttles it surges but at aggressive throttles it doesn't. The wife says it has been doing this since fuel tank replacement which was many months ago so going back to dealer is probably a waste of time. She also tells me that at 160 to 180 kms to empty the low fuel light comes on and goes to 0kms to empty on the display. has anyone had this problem any any idea where to start looking for problem. Quote Link to comment Share on other sites More sharing options...
WWWPerfA_ZN0W Posted September 13, 2016 Report Share Posted September 13, 2016 Possibly a faulty sender and/or fuel filler neck. Both can get damaged during a fuel pump replacement. Do you have FWD/AWD? If you have AWD, the fuel tank is saddle type, which means a crossover tube is needed to pull fuel from the side the fuel pump is not located in. Maybe they left if off/disconnected. Quote Link to comment Share on other sites More sharing options...
Hunter801 Posted September 14, 2016 Author Report Share Posted September 14, 2016 It is AWD. What would case the surging problem on full tank also? Quote Link to comment Share on other sites More sharing options...
WWWPerfA_ZN0W Posted September 14, 2016 Report Share Posted September 14, 2016 IDK. Possibly inaccurate metering of fuel? Just to rule out the throttle body, you should take the air intake tube off and see if there's any crud buildup around the throttle plate. Give it a good cleaning with MAF cleaner and a rag/soft nylon bristle toothbrush. If the throttle plate is sticking, that should take care of it. How many KMs on your Edge, btw? Do you know if the spark plugs & PCV valve have ever been replaced? Air filter? If these all check out ok, then try running a quality fuel injector cleaner through the gas tank. I have found Techron and BG 44K to be the most effective so far. Quote Link to comment Share on other sites More sharing options...
Hunter801 Posted September 16, 2016 Author Report Share Posted September 16, 2016 It has 250000km on it. I have no idea what has been done for repairs before i got it. I'll try some of these on my days off. Thanks. I'lll let you know how I make out. 1 Quote Link to comment Share on other sites More sharing options...
WWWPerfA_ZN0W Posted September 16, 2016 Report Share Posted September 16, 2016 Should the above ideas not work out ... It is possible the valve body is sticking just a tad and pressures aren't high enough at low throttle to overcome it. It'd be worth doing a 3x drain & fill of the fluid regardless, with unknown history. No flushes. Quote Link to comment Share on other sites More sharing options...
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