Re: '97 TJ loss of power at highway speed
 

* under the vehicle hit the cat. conmverter and listen for rattles
there is a good chance yours is bad and choking off exhasut flow at
higher speed
* it can even clog the muffler

Rong Ou wrote:

> Hi y'all,
>
> I have a '97 TJ Sport (4.0L/6 cyl) with 90K on it. Pretty much stock
> except 30" tires. Last weekend while driving on the highway at 60-70
> mph, the engine suddenly lost power and it dropped to 40 mph and
> wouldn't go up. I managed to pull off, popped open the hood, but
> nothing seemed obviously wrong. So I restarted, drove all the way home
> without any problem. I changed oil and spark plugs and wires. Then the
> same deal happened again this week, it dropped from 60 mph to below 40
> mph, so I downshifted and after a few long seconds the engine came
> back. I don't know when it's gonna happen next time but it's pretty
> scary when it does. I also have the "Check Engine" light on, I did the
> on-off-on thing it shows code 12. Mabye I am just imagining it, but
> the engine feels sluggish and seems to be shaking more than usual.
>
> So I am just wondering if any of you have had similar problem with
> your TJ? I'll put in a can of those fuel system cleaners next time I
> fill up. Anything else I should try?
>
> Thanks!
>
> Rong