On a 1989 Thunderbird, does the VSS have anything to do with the way the transmission functions? My speedometer will sometimes go to around 20, stop, and then jump up to the correst speed. The transmission is also funky. So what does the VSS controll?
2007-01-30 15:51:15 · 4 answers · asked by Anonymous in Cars & Transportation ➔ Maintenance & Repairs
A 1989 Thunderbird is equipped with an AOD transmission, which is ENTIRELY mechanical. There are no electronics involved on this particular transmission. In fact, there isn't even a lock-up torque converter. The VSS is used as an input to the speed control amplifier, and/or electronic instrument cluster on vehicles of that vintage. It wasn't until the early to mid '90's when Ford introduced the AOD-E/4R70W transmission, where electronics were added for better shift scheduling/control/smoothness, and overall efficiency.
2007-01-30 16:01:41 · answer #1 · answered by Anonymous · 1⤊ 1⤋
vss controls speedo, trans shift points, cruise control
if vss is irratic trans will shift funky
you need to check for stored codes,test cruise control, if it works irratically vss could be defective
also check for a broken kickdown cable plastic link at the throttle body
2007-01-30 16:33:41 · answer #2 · answered by Magikmann 4 · 1⤊ 0⤋
nicely the motor vehicle spped sensor in located on the wonderful area of the transmission placed iam unsure what that has do to with the radio , u might desire to get a wiring set up kit for that year and type of motor vehicle which will make issues straight forward on you
2016-11-23 16:08:33 · answer #3 · answered by Anonymous · 0⤊ 0⤋
vss tells trans what to do according to speed(basically).replace vss and should fix prob.
2007-01-30 15:58:40 · answer #4 · answered by JUNKYARD 2 · 1⤊ 0⤋