Well I started trying to type up a list of terms that I though would be good to have definitions for, but I started filling in information and one thing led to another and well, here you go....
MAF - Mass Air Flow sensor - Measures the airflow through the intake tube to the engine, it reports this to the EEC, which uses this data to control the timing of the spark and the amount of fuel delivered.
MAFs - see MAF
TPS - Throttle Position sensor - Reports how far open or closed the throttle is to the EEC
IAC - Idle Air Control - An opening that allows air to flow to the engine when the throttle blade is completely closed, hwen it gets clogged the engine will have a rough idle, or not idle at all.
ACT - Air Charge Temperature sensor - Measures the temperature of the air comming into the engine, commonly used in super/turbocharged setups.
IAT - Intake Air Temperature sensor - Measures the temperature of the air comming into the engine. This value is reported to the EEC
MOD Motor - Ford's Modular Motor - This is the name for the modular line of engines, including the 4.6(V8), 5.4(V8), and 6.8(V10) Liter engines. The modular comes from the fact that the same tooling, with only small changes, can be used to produce any these engines. The 5.4 is basically the 4.6 with a taller deck height and longer stroke, the cylinder heads between these engines can be interchanged. The 6.8 is basically the 5.4 block with an extra 2 cylinders in the middle. The heads for this engine resemble the 5.4 heads with provisions for the extra cylinder each.
4R70W - The name designation of the automatic transmission used with the 4.6('94 and up) and newer 3.8(years?) engines. It was also used in all MarkVIIIs and the '96 and up Mustangs. It is similar to the AOD with a wider gear ratio (the W is for wide) and electronic controls.
AOD - Automatic OverDrive - The name designation of the automatic transmission used with the 5.0('89 through '93) and earlier 3.8(years?) engines. This transmission was also used in FOX bodied vehicles
AODE - Automatic OverDrive with Electronic controls- This transmission was not used in any MN12 or FN10. The AODE only came in the following vehicles; 1992-1994 Town Car, Crown Victoria and Grand Marquis and the 1994-1995 Mustang (both the 3.8L v6 and the 5.0L V8)
Trac-Lok - A locking differential. This will allow both wheels to get power and turn at the same rate when going straight, and still allow them to turn at different rates when the car turns a corner. This gives much better traction than an Open Differential. The locking action is accomplished by a spring and two sets of clutches, one set for left and one set for right, these clutches will engage or dissengage to keep both wheels turning the same, or allow one to slip.
Diff. - see Differential
Differential - Directs power to the wheels, can be either open(see Open Diff) or locking(see Trac-Loc)
Open Differential - A non-locking differential. This will allow one wheel to turn while the other does nothing, resulting in a 'one wheel peel' and poor traction.
Open Rear - see Open Differential
Gear Ratio - The ratio of the Ring and Pinion Gears in the rearend. Different Gear Ratios will cause the wheels to turn at different RPMs at any given driveshaft RPM Common Ford gear sizes are 2.73?, 3.08, 3.27, 3.55, 3.73, 4.10, and 4.30. There is a company producing a set of 3.90 gears, I believe it is Motive that is doing this.
Final Drive Ratio - see Gear Ratio
Ring and Pinion Gears - A set of gears designed to work together to transfer the power from the driveshaft to the rear wheels. The Pinion Gear is connected to the driveshaft, and has a small end with helical gear teeth, these engage the Ring Gear which is attached to the differential. Different Gear Ratios will cause the wheels to turn at different RPMs at any given driveshaft RPM
Ring Gear - Large round gear with teeth cut into one side, this gear attaches to the differential.
Pinion Gear - A shaft with a small helical gear cut into one end, the other end bolts to the driveshaft flange
Carrier - The housing that contains the Ring and Pinion Gears and the DIfferential
8.8 gear - The diameter in inches of the ring gear found in V8 and Supercharged MN12/FN10s. It is stronger than the 7.5 inch gear. It is also used in other Ford Vehicles, such as the Mustang, Panther platform cars and in some trucks.
7.5 gear - The diameter in inches of the ring gear found in V6 non-supercharged MN12s.
MN12 - Midsize North America Project #12 - The Chassis designation for all '89 through '97 Thunderbirds and Cougars
FN10 - - The Chassis desigantion for all '93 through '98 MarkVIIIs
FOX - - The Chassis designation for (years?) Mustangs, Thunderbirds, Cougars, and MarkVIIs
SN95 - - The Chassis designation for the '95 through '04 Mustangs
DEW98 - - Ford's latest mid-size, rear-drive chassis which is used for the new Ford Thunderbird, Lincoln LS and Jaguar S-Type and is suspected to be the base of the 2005 Mustang.
Panther - - The Chasis designation for (years?) Crown Vics/Grand Marquies (and TownCars?)
I sorted terms by group instead of alphabetically because I thought it would be easier to see what has been left out this way.
I need help with some of the years, and if you see any errors, correct them, thats the propose of this forum.
Added AODE info from ShadowDragon
Added DEW98 info from n0esc
Last edited by Chlorine; 07-27-2003 at 11:11 PM.