What engine came in the 1966 coupe deville?
Exactly what it came with from the factory. Yup, yup. You need to use the same engine that came out of a JXI. The coupe and convertables are 2 totally different cars. The LXI is considered to be the coupe, and they have a Mitsubishi engine in them, while the convertable have a Chrysler engine in it.
I don't know much about cars but a Google search came up with these, http:/wwwzperiodzpartstrainzperiodzcom/ShopByVehicle/CADILLAC/DEVILLE http://www.parts.com/cadillac/1992-cadillac-deville-parts.cfm Or ask this forum, http://www.cadillacforums.com/forums/cadillac-deville-1985-2005-including-1985/185903-92-deville-starter.html
When you put gas in your 1998 ford coupe and now the service engine light came on and it has a little hesitation to it when stopped at red light why is this?
You didn't specify which engine you have. In 1966, Thunderbirds came with a 390 as the standard engine, with an option for a 428. Either way, the firing order should be stamped on the intake manifold in the vicinity of the carburetor. Assuming you've got an original motor, the firing order should be as follows: 1,5,4,2,6,3,7,8.