Running rough

[ByteMe]

The Viper just started running rough. Here are the symptons/information:
1. Idle does not change hardly at all
2. Car has < 10,000 miles
3. Rough enough to really shake car - if we had cup holders, a cup full to within 1/2" of top would spill

If you have any ideas on this I would appreciate it!

 

[Leonard Knight]

I would check spark plugs, plug wires, and even the coil packs as these sometimes go bad. I had one go bad but it only made a high rpm miss. Does it go away when you give the car some throttle?

 

[ROCKET62]

Plugs / Wires ?

Or you just need some WOT and some miles to blow out some accumulated carbon from not driving that beast !

 

[ByteMe]

Yes, the car runs fine when throttle is applied.

 

[STUGOTS]

Mine did the same exact thing and Chuck T fixed it, it ended up being the IAC might wanna check that.

Also 10k the car should be starting to be broken and since you have a 97 that years has a very very agressive cam so it may acuatlly be normal.

 

[AJT]

Have the battery checked. Maybe at idle amperage is low & when gas is applied the alternator picks up amperage .. I have heard of a lot of things happen to a Viper with a bad battery

Andy

 

[Chuck 98 RT/10]

It doesn't sound like you drive it enough. If you have ever had to recharge the battery then the computer has to learn to drive again. This only takes a day.

Otherwise you need new plugs and wires. Call Tator.

 

[Gerald]

What CHuck said,

It sounds like your battery somehow got very low and it's lost it's memory and is trying to relearn. If it doesn't clear up after a day or so you might want to change batteries..

Gerald

 

[ceieio]

Another indicator - If the exhaust starts heating up (you'll smell it of notice the smoke from the side sill) then it could be wires or plugs. (Raw fuel starts burning in the pipe / cat / muiffler). Saw this on a friends car and it was an open plug wire.

 

[ByteMe]

Re: Running rough - RESOLVED

It wasn't the battery, it was build up in the throttle bodies and a mis-synched throttle cables combination. Thanks to Maltby Motorsports here in Washington for the great detective and fixing work!