swampxj86

Hey guys my 2000 xj had no power and a flashing cel. After 10 mins. I shut it down and the back of cat was red hot. Any ideas. Clogged cat?

CCKen

A flashing CEL is trying to tell you that if you don't fix the problem your CAT(s) will nuke. The red hot downstream CAT is turning into a toaster oven...like the flashing CEL is saying.

Get your Code(s) read to find out what causing the problem. Probably raw fuel burning in the CAT.

Not Good!

cliffpenick

Like Ken said you need to get the codes checked to see what has gone bad. I would guess that it is your coil pack dropped a few cylinders and now the fuel injectors are dumping fuel in the exhaust system.

swampxj86

Thanks. Yeah didnt get a chance to grab the codes. Will get them tonight when I get home.

Bustedback

Your catalytic converter is toast. The loss of power is because of the toasted and plugged cat. Now you need to figure out what caused the cat to go into nuclear meltdown before just simply replacing the cat and melting it down too. A flashing CEL mean the catalytic converter is in eminent danger and you should shut the engine off ASAP.

swampxj86

Ok so the codes are cylinder 3 and 4 misfires. Going to start with fuel. Does anyone have a way to check the coil rail?

swampxj86

Ok so update, im pretty sure my heads cracked. The only symptoms are the misfires and cylinder 3 and 4 spark plugs are super clean. So just going to throw a 0630 head on since my buddy has a couple of them laying around.

swampxj86

Ok so my head is cracked. Luckily my buddy has a good 0630 head at his shop I can have so going that route.

extrashaky

You realize it's not a direct swap, right? The exhaust ports are different, so you'll need to swap out your exhaust manifold or use an adapter plate. You'll also need to make brackets to bolt on your coil rail.

Personally, I would just go with a Clearwater head instead, or find a TUPY 0331 in the junk yard if cash is an issue.

swampxj86

Well aware. I have an exhaust of my old 98 and brackets are simple and cheap. With gaskets, head studs, etc. Im only spending $55.00. Compared to a $600 clearwater or alabama head

extrashaky

Well, can't beat that.

swampxj86

Exactly if he didnt have a head I could have I would have bought a clearwater.

tjwalker

Keep in mind that your cat or cats in some configurations may likely be shot after this.

swampxj86

Yeah my cat was clogged so already got a new high flow to replace it.