I have a 96 Park Ave. 3800 with 254000 miles. Until today it ran like new. Today it started trying to stall or studder when I give it gas. It seems to run fine on level ground and just holding speed but from a dead stop or giving it gas when it is moving it seems to be missing. I haven't messed with a car in years and am not sure where to start. Help please?

Start with the easy things first and check spark plugs and ignition wires.

O changed the spark plugs and it seem to fix the problem. The plugs looked great. A few days later it came back. It only shudders after it is moving and then only when I try to accelerate. I don;t think the transmission fluid and filter have been changed in over 100K mikes. I am going to do that tomarrow. Any other ideas would greatly be appreciated.

Mike

I had a similar problem with my 95 Roadmaster sedan. The car would shudder on level ground or very slight incline whenever I would accelerate. I was told that my water pump was leaking and the antifreeze was getting on and affecting some electronic part of the ignition system. I realize the two cars are very different, but perhaps this may give you good leads on possible culprits...

Good luck.

I had a similar problem with my 95 Roadmaster sedan. The car would shudder on level ground or very slight incline whenever I would accelerate. I was told that my water pump was leaking and the antifreeze was getting on and affecting some electronic part of the ignition system. I realize the two cars are very different, but perhaps this may give you good leads on possible culprits...Good luck.Water pump leaking on an Optispark & causing misfire is quite common on the LT1 Roadmaster, but this does not apply in the case of a Park Avenue. When you changed the plugs, you lowered the resistance somewhat, but not enough. Change the wires with ACDelco, Belden or MSD. You could have a weak coil also, but that can be determined after the wire change.

Water pump leaking on an Optispark & causing misfire is quite common on the LT1 Roadmaster, but this does not apply in the case of a Park Avenue. When you changed the plugs, you lowered the resistance somewhat, but not enough. Change the wires with ACDelco, Belden or MSD. You could have a weak coil also, but that can be determined after the wire change.


I ohmed out the coils and they were the same. A friend told me it could be my overdrive lockout (?). With 258K on it I don't think I am going to invest much money into it. I will try p[lug wires. Thanks
Also, dude, your on fire "HOT" is way cool.