Blazin carpet by muffler on 95.

[smccollamjr]

Here's the latest, my local stealership has a part number for muffler heat shield for a '97+. I went to order it but forgot my wallet On my way home I stopped at a used car lot and looked under an '00 XJ. Sure enough, there was a heat shield above the muffler attached to the unibody, but none over the cat.

 

[DDCxj]

My 87 is getting 21/23 16/18 is way low.

Thats not too low. Getting 21/23 actually sounds high to me, I wish I had your Jeep. It depends on the climate your in too though. I'm getting somewhere around 15/18 around here and everyone I've ever asked has been getting about the same. Also, everyone has a different driving style, that can make a big difference.

 

[langer1]

Here's the latest, my local stealership has a part number for muffler heat shield for a '97+. I went to order it but forgot my wallet On my way home I stopped at a used car lot and looked under an '00 XJ. Sure enough, there was a heat shield above the muffler attached to the unibody, but none over the cat.

It's there just in case of a problem like yours. It is a good thing to add if you don't have one.
But when everything's working like it should you don't need it.

 

[4xSanta]

Don't tell no one but that area is my road cooker for truckers chicken etc.

 

[dizzymac]

I think we need to get back to what Langer is saying, THIS IS NOT NORMAL. Adding insulation will help the symptom, not the problem.
I had a MAP sensor issue not to long ago, the floor under my cat and muffler would get so hot that carpet would steam and the heat in those areas was brutal.
I could have added insulation and alleviated the symptom, but the problem was still there, not until I corrected the MAP issue did problem go away.
Adding insulation after the prob. is fixed is OK and may even help cut down on some of the floor pan rust.

 

[jayuu]

on my 93 the heat caused it to rust out and then burn a hole in the carpet. then again it was rearended and the exhaust got bent so the muffler was touching the floorboard. now i run a cherrybomb and the floor barely gets warm.