1997 LHS spark plug wire replacement

If it does, it's not a 97. If it's a 97, it does not have coil on plug ignition.

If your engine has spark plug wires, it is definitely not coil on plug.

The "long plastic tubes" are because the spark plugs are deep in the cylinder head.

Twist and pull.

yeah a 97 has the 3 coil pack over on the right hand side valve cover/cyl head.

those tubes are just real long spark plug boots. if you have coil on plug, it should be a 2nd gen LHS......about a 99 or newer i think?

Thanks to aarcuda69062 and rob for the information. I have managed to remove the forwardmost passenger side plug wire. I'll probably replace the plugs this weekend. It could be easier if there were more slack in the wires and fewer competing wiring passing in the vicinity... not to mention the way they are inset into the manifold... What is the cylinder numbering scheme on this 6-cyl engine? I am getting a P0305 engine code...

first cyl on passenger side is #1 cyl on 3.5s. not familiar with the other engines

Thanks to aarcuda69062 and rob for the information. I have managed to remove the forwardmost passenger side plug wire. I'll probably replace the plugs this weekend. It could be easier if there were more slack in the wires and fewer competing wiring passing in the vicinity... not to mention the way they are inset into the manifold... What is the cylinder numbering scheme on this 6-cyl engine? I am getting a P0305 engine code...

Passenger side front to back 1-3-5 Drivers side front to back 2-4-6

You have a leaking lower intake manifold gasket.

You have a miss in cylinder 5 (diagnostic codes can be googled!). When my wife's intrepid had that code, the problem was that the plugs were worn out.

alldata verifies PO305 is miss in #5 cyl.

You mean 'they.'

Not necessary for me to do so.

And since this engine was introduced, I've seen 80-90 instances where it was a leaking lower intake gasket.

Joe: I am well aware that diagnostic ciodes can be googled. I guess I should have said that I know that a P0305 comes back to a "cylinder 5" issue. I am trying to determine what my cylinder numbering is... I have done a limited amount of googling for LHS cylinder numbering without solid result...

How complicated to fix a leaking lower intake gasket?

"How complicated to fix a leaking lower intake gasket?"

not hard but make sure what the problem is though before you go that far. check the plug and wire for any damage or evidence of running lean, rich, burning oil, etc. it may only be a bad plug or wire or it may be deeper in the lower intake, valves piston etc. but start with your plugs and wires first. should be the back cylinder on passenger side.

will do. BTW, would a "miss" suggest against the gasket?

Sorry, most of the time when people post a code they want a translation. aarcuda jumped straight from "what is the code telling me" to "what he's most frequently seen as the cause", and I wanted to pull it back to the actual code translation. Since you're already trying to replace the wires (and plugs?) I'd guess you're already seeing some sort of symptom leading you to believe they need to be replaced.

For the 2nd generation LH cars, it was in the FSM. I'd expect it to be in the 1st as well....

No. You know you've got a miss; there are a million possible causes from bad plugs to a clogged fuel injector to a burned valve to a leaky lower intake manifold gasket to a cracked head to....

Start by completing the job you've already started (plugs and wires) and see if it goes away. Of all the causes I can think of off-hand, that's far and away the easiest and cheapest thing to fix -- especially since you're already doing it! If you've still got it after that, it's time to dig deeper.