Okay, This is a problem i purchased from someone else so here goes what i know. Its a 1992 Jeep Wrangler that was originally a 4 cyl. from what the dealer says on the vin number. It currently has a 6 cyl. engine in it. I got a good deal on the jeep but it is getting poor fuel mileage. Here is what i have done so far.
I have put 40 dollars in gas in this jeep and i have only been able to go about 120 miles before i needed gas again.
The engine is a new rebuilt engine with 400 miles on it. Transmission was rebuilt 8 months ago. All o2 sensors are new, new cap, wires, plugs, and alternator, and starter.
Smells like the catalytic is going bad when im driving down the road i can smell it. I stopped into an exhaust shop and they did a temp test on it and its only 380 degrees F. They said that a bad "cat" is usually over 500 degrees F.
When checking with a circuit meter making sure all the plugs were firing i noticed that the center of the cap on the wire i get an arc of electricity if i get anything metal close to it. "arcing rotor"??? Is that what that would be? never encountered an arcing rotor so not sure.
It idles fine 90 percent of the time with a drop here and there that is rare. When driving the jeep it rarely has loss of power but if it does its only when shifting from one gear to the next like its flooding out or missing. **Also when shifting from each gear and accelerating the check engine light will light up for a moment until i reach a constant rpm level but on acceleration it does light up**
So if you know what i should check next i would appreciate any advice because i dont want to spend 200 bucks on a new "Cat" if thats not the issue.
Please reply to this post to help others with similar problem in future and also send me an email "COPY" "PASTE" to my email on my blackberry. Thanks