really rough idol after wheelin' yesterday

[Gumby]

Hey, nothing wrong with a little kentucky crome right!

The hanger seems to be doing the job quite well for now. Remember, i'm jobless at the moment, so cash is tight.

So what's the deal with that CE code? What's the fix?

The downstream O2 sensor looks at the exhaust gasses. It wants to see the same pattern as the upstream sensor, only to a much smaller level, meaning the cats are cleaning up the air. What your's is seeing is way too much oxygen from the leak. It doesn't match up with the upstream O2 so it throws the code. The fix is to either get your exhaust fixed, which may be a bad gasket at that flange, or it might actually be a cracked flange that an exhaust shop welder can fix in about 30 seconds. Or you can buy a downstream O2 emulator that tricks the ECM into thinking everything is cool all the time. People use them when they eliminate the cat to make the OBDII system think they are there. In your case, that would be a silly option.

 

[concretejungle]

Gumby, you are the man! Thanks a ton. I swear i learned a lot today; learned about catalytic converters and their function, I removed a head after a blown head gasket in my sister's isuzu trooper and found out what a cracked head and a blown head gasket look like.

 

[concretejungle]

CJ,

Your engine compartment is so dirty it takes my breath away. Grab an old toothbrush and some soap and clean that poor engine. Every nook and crannie. Cost $0. Benefit to your cruiser's ego... Pricele$$



-B-

B-, some TLC is in order for her really soon, promise! I have a box of new parts waiting to go on. Now i'll throw in a intake hose and an exhaust gasket and that brings thigns to new wires, iridium plugs, dizzy cap, rotor, valve cover gasket, belts, pcv grommet and hose. At that time i plan on giving it a real good cleaning, hey, i wheel my junk what can i say.

 

[LX_TREME]

CJ,

Your engine compartment is so dirty it takes my breath away. Grab an old toothbrush and some soap and clean that poor engine. Every nook and crannie. Cost $0. Benefit to your cruiser's ego... Pricele$$



-B-

Definetely your FJZ80 cryin right now and need lots of work.....

 

[LX_TREME]

By the way.. How did you get cracked on the tube...???

 

[concretejungle]

By the way.. How did you get cracked on the tube...???

Just it being old and one day tilting the top of the canister back to clean the air filter. Put everything back together and cranked the truck up, noticed a rough idle, inspected the intake tube and saw a huge crack across the bottom. Took it back off, wrapped about 10 layers of ductape around the crack connected it back up and she purred like a kitten.

 

[Gumby]

Have you eliminated the racing tape as a source of your rough idle? Maybe it got wet or hot while wheeling. Carb clean or an unlit propane torch may help you find a vacuum leak through the duct tape.

 

[concretejungle]

Have you eliminated the racing tape as a source of your rough idle? Maybe it got wet or hot while wheeling. Carb clean or an unlit propane torch may help you find a vacuum leak through the duct tape.

Gumby, i did spray some eather (sp?) around it while it was idling and i didn't notice a jump in idle. I had always heard that if it was leaking and you sprayed that stuff around where a vacum leak was, it would rev up.

 

[Gumby]

That's what you would do with carb cleaner or propane as well, but much less chance of explosion than with ether.

 

[concretejungle]

Livin' on the edge!

 

[semlin]

Does a 95 have the clamshell heat shields round the cats? If so I would take a look at the upper cat heat shield and see if it is loose or broken anywhere. After chagning my cats I drove home without attaching the bottom half of the heat shield and it made a horrible noise at low revs that sounded like an idle/exhaust problem not a vibration and had me quite worried. Once the lower heat shield was attached it stopped.

 

[concretejungle]

Update

Installed a new gasket in the exhaust. Pic shows the old one that was pretty badly rusted and corroded beside a new one. Tightened everything back up and checked for leaks. No leaks. Unhooked battery to reset CEL. Still has a slight rough idle but no CEL for now.