The fuel pump relay on your 1991 DeVille is in the relay center underneath the passenger side of the dash, to access, take down the sound barrier under the right side of the dash panel (7mm). The third one from the bottom right relay position is for the fuel pump (be sure to count any vacant positions, you may not have all the accessories). However, if you just want to check if it is good, you can run a fused jumper from the positive battery post to the prime connector. The prime connector is green with a red wire (not connected to anything else), It's located underneath a cover on the firewall a few inches inboard of the right hood hinge. Cadillac Man
Should be on top of the starter
It is located inside of the distributor.
Mounted on top and inside the fuel tank.
firing order for a 1991 cadillac deville
what does elrs means in de cadillac deville 1991
In the tank. You will have to drop the tank to get to it.
yes.
i am trying to find out the codes for a 1991 cadillac deville
The 1991 Cadillac Deville oxygen sensors are located on the firewall and the air cleaner housing. The firewall oxygen sensor will be on the drivers side. The air cleaner oxygen sensor will be on the back of the air cleaner housing.
The cabin air filter on a 1991 Cadillac DeVille is located under and slightly behind the glove compartment. All the air which enters the cabin is filtered through it to remove most contaminants.
Yes
200hp