20 Most Recent 2009 Ford F-150 - Page 3 Questions & Answers

I fixed it. I have had the same problem. The Right rear blinker would not flash. All the other lights did flash. It was intermittent at first, would stop working for a few days, then go a month without any problems. It finally stopped working at all, just the right rear indicator flash. I pulled off taillight assembly, pulled bulb and socket plugs... all looked good.. but it still did not work. Went to auto part store with assembly off and wires tucked in to the frame. Bought bulbs and replaced them.. it still did not work. THEN.... The clerk had me pull the Top socket out and put it in the bottom wire position . Presto!! it worked.. I put the bottom socket in to the top wire position and all is good. Why it worked?? do not know. However if it goes out again I will be buying new socket assemblies. Hope this info helps.

Code 316 is an extension of your Code 304. 316 means its misfiring in the first 1000 RPM's and 304 means number 4 cylinder is the problem cylinder.Could be a bad wire, coil, or sparkplug.

If you know which one it is, take it off and see if the clips that hold it to the rim are all intact and not bent

I've had the SYNC stop working twice for no reason. The first time, after checking fuses and such and not finding a problem, I just disconnected the battery cable for 10 minutes, then reconnected and everything worked again. Went straight to that the second time it happened and was back in action straight away.

Could be the IAT sensor, but check it with a code reader or scanner

the iat is part of the maf sensor located in the air filter duct or housing. 6 pin connector. pin one color violet/gray is for iat. pin 2 is c-signal rtn yellow/violet. pin 3 maf yellow/violet. pin 4 maf rtn blue. pin 5 ground black/yellow pin 6 circuit breaker fuse 76 blue/brown

it will tell you in your glove box service book