What is the best spark plug wire for a 1997 Cadillac Deville? Also the best plugs?

The fuse panel is the best place to look for a plug n play ground loop

Under the Exaust manifolds. Hard to get to the ones near the firewall. May have to acces them from beneath the motor.

I would check the fuel pressure. You may have a problem with the fuel pump relay or the one way valve in the pump.

Usually, if you only have 1 cylinder misfiring, you have either a bad spark plug or bad spark plug wire. If you replace the cylinder 6 spark plug and still have a misfire condition, replace your spark plug wires. If replacing the plug and wires doesn't fix the problem, replace the ignition coil.

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I would start by getting spark plugs and spark plug wires. And find out (through part store)what the gap is for your plugs.Then i would replace the cap and rotor and check your air filter. If you have over 60,000 miles i would also change the trans.filter and fluid




Spark plugs
Spark plug wires
Distributer cap
Rotor (if applicable)
Air Filter ?

With your hood open, look for several large and long (probably black) wires. Follow these (ignition) wires to your engine block. Where each wire ends you will find a spark plug.

The following 2001 Cadillac DeVille owners manual should help.

http://pdfcast.org/pdf/2001-cadillac-deville-owner-8217-s-manual

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1997 Cadillac DeVille 4.6 liter DOHC V-8 VIN "Y"




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acdelco 41-950 platinum plug

fuel filter (supposed to be done every 30,000 miles), transmission fluid, coolant, p/s fluid, brake fluid, spark plugs, spark plug wires, check timing belt.. those are things recommended by gm after 100,000 miles

There are no spark plug wires on the 2000-up Northstar engines. They use coil on plug design. First remove the engine service cover.(The Pretty plastic peice that has the Cadillac symbol on it) Then disconnect the coil connector which sits to the right of the coil and should just snap off by hand. Next If you remove the screws that holds the coil pack (8 screws) to the top of the cam covers, you will see 4 black round rubber boots that sit on top of the plugs. Pull the boots free to expose the plugs. The tops of the spark plugs sit directly underneath