Under Water now it is off and on? Help

[dwelty]

I have a 91yj. I submergeds it underwater, drained and changed all oils and it runs? Some times it will go all day no problem today it would stop, when I crank it it turns over and that is all. I noticed my catalytic converter was red hot? Also after a few minutes it will start. I let it sit for about 1.5 hours and it fired up and didnt do it again today? Any Ideas.

 

[far_right]

i see that you are in FL? was it in salt water?.... if it was i would try to unload that puppy QUICK

 

[Tug-n-pull]

Loose the cat it is most likely shot and causeing most of the problems. tug

 

[White]

ya, hack that pipe off and hollow it out, most likely the catalist got clogged. hollow it out, and put it back on. some states require it to pass inspection.

 

[dwelty]

i see that you are in FL? was it in salt water?.... if it was i would try to unload that puppy QUICK

It was in fresh water. I had the o2 sensor changed it was acting up. Do you think it could be the cat converter?

 

[exjay33]

If the 02 sensor goes it can take the cat with do to running rich.

 

[marc]

if it is a four cylinder i wouldnt just hack off the cat, you need the back pressure to help build horsepower, trust me I did same thing (hack off the cat) ran for about a month and presto 2 burnt valves, it may have just been my luck, but it has a cat on it now and now problems since. also i would check the IAC and the TPS mor the IAC than the other but both are pretty inexpensive.

 

[jeepin916]

Control Arms

take out the computer and dry it up, spray rubbing alchol in all the electrical connectors.

 

[bryanjeep]

Helped me out when I took the cat off. I felt an increase in power.