Ford Expedition

clardy

WHOISMOOTOO

did you install it backwards by chance?

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2005 EDDIE BAUER (2WD)
24X10 (305/35/24) GIOVANNA CANELLI'S, PTM OXFORD WHITE MIRROR CAPS, FLOWMASTER 40 SERIES MUFFLER w/ CUSTOM TIPS, PIONEER AVH-P4300DVD DOUBLE DIN DECK, SOUNDSTREAM DVD, 2-KENWOOD 1800W AMPS, 4-KENWOOD 1200W 12"SUBS IN 2-TURBOBASS PROBOXES, 2 7" POWER AKOUSTIK HEADREST TV'S

tonydiv

I don't think that jumping it will solve the problem.

Racenut

If you try and do a bypass you will get CRAPPY MILAGE AND POWER!

The computer uses the AIT to adjust the fuel and timing curves so if you bypass it you will either have issues in cold weather of not getting enough fuel, and in the summer you could actually be overfueling and spitting raw gas out the tail pipe.

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2002 Expy EB 5.4L 2wd
CAI
Flowmaster 70 series
Rear cat and Y pipe delete
Smoked corners, tails, and third brake light
2 Hella 500 FF behind grille
8000K HIDs Heads and Fogs

Soon to come

Shorty Headers
3.5" Fabtech 2wd lift kit
33" Tires

Thermo

Clardy, I would first try getting a new AIT sensor and seeing if that will help your problem. The sensor is cheap and easy to install. I would also do a once over of the wiring and look for any sharp bends in the wiring (this would indicate a broken wire, leading to a high indicated temp to the computer).

If you need more info, I will see what I can dig up for you. I don't have my normal assortment of technical info for the parts of your truck, but I am sure I can figure out what you are needing to know using other things that are available online.

dj_mindframe_99

boy I hate to speculate so I'll list any causes I can think of. lets troubleshoot.

MAF is installed backward, the sensor on top of the MAF is mounted 180, It is still sucking hot air from the engine compartment (box installed improperly or not at all), twisted or broken wire, mis-connected wire, bad air fliter,
also try unhooking the Negative battery cable for about 10-15 minutes, hook it back up then start the truck and let it run at idle for about 10-15 so it can re-calibrate for the new airflow coming in, (if you haven't done the GOTT's mod give it a try, $20 and 45 minutes), during install an unseen connection was disrupted check all surrounding plugs for secure connections/tight wire crimps etc., vacuum hose??

those are all the things I can think of in that system that could fail for any reason, I think it's probably free to check them all yourself. before you guess at a sensor.

clardy

never got back after the replies thanks guys i ended up retiring that truck due to terminal cancer (rust) so i couldn't lift it but still have the parts so i will be trying again on the 99 i bought