On a 1997 Ford Thunderbird : The odometer is in the middle of the speedometer
What engine do you have?
behind and screwed to the speedometer housing
in the gas tank
you will have to have this evac by a a/c tech.
Not to be disrespectful, however you just answered your own question...if it's a V-6, there are 6 spark plugs!
Get under the car
180 km/h
It is a recall. You should take it to a ford dealer. They will take care of it. Here is a link, that shows recalls for The Thunderbird. http://www.dealerrater.com/recalls/Ford/THUNDERBIRD/
I believe the 1988 Ford Thunderbird is OBD I , EEC IV ( there is probably an EEC TEST connection in the engine compartment )
According to my Chilton's Auto Repair Manual : With engine oil filter change : The 1988 Ford Thunderbird engines ( 2.3 / 3.8 / 5.0 ) take : ( 5.0 U.S. quarts )
You can replace the speedometer cable, on your 1988 Ford Ranger, by loosening the cable nut on each end of the cable. The cable will come off and can then be replaced.