Bad H-Pipe?

Black Sun 5.0

Founding Member

Mar 23, 2002

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L.I., N.Y.

Jun 11, 2004

#1

• Jun 11, 2004

• #1

I've had this ongoing overheating thing with my car. Stop and go or idle, everything is great. But hit the highway, and the temp climbs real well. Radiator, water pump, t-stat, etc. have all been ruled out. What about a bad h-pipe? I have one of those BBK pipes with cats. I know the cats are shot, I used to hear them rattling around down there and I no longer pass emissions. Any thoughts out there?

 

green

New Member

Apr 26, 2003

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Jun 11, 2004

#2

• Jun 11, 2004

• #2

maybe the cats are plugged, alot of junk in them. that probally would do that. id take it out and beat the stuff out of them. just get a settl bar about 1 inch round and put the bar up there and beat all the stuff out.

 

1

10HoleLX

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Mar 6, 2004

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Southern California

Jun 11, 2004

#3

• Jun 11, 2004

• #3

One easy way to check for clogged cats is like this.
With engine at operating temp (or close to it) try to feel if there is a major temperature change before and after the cats.
If its super hot before the cats and cooler after, then you have clogged cats.
Worth a try

 

LT1Killa

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Oct 16, 2003

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Jun 11, 2004

#4

• Jun 11, 2004

• #4

Uh... won't you burn the crap outta your hands doin that?

 

88stangmangt

Active Member

Nov 25, 2003

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Stafford,VA

Jun 11, 2004

#5

• Jun 11, 2004

• #5

LT1Killa said:

Uh... won't you burn the crap outta your hands doin that?

Click to expand...

um noooooo.................................. common sense will tell you to use a heat gun to test it out craftsman sells nice one's.

 

5 Liter Mustang

New Member

Aug 17, 2003

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Jun 11, 2004

#6

• Jun 11, 2004

• #6

you dont literally have to hold your hand to the H-pipe.. if you are an inch or so off, you should be able to feel the temp. difference, w/o burning your hand.

I have one of those craftsman laser thermometors though... it does come in handy.

 

R

ratrapp

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Apr 24, 2004

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buena vista,va

Jun 12, 2004

#7

• Jun 12, 2004

• #7

an easier way to tell is remove your two oxygen sensors and drive the car because this will give your exhaust gas a place to exit.it will be crappy sounding but it will tell you if thats the problem without gutting the converters.

 

dvs bullet

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Feb 20, 2004

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Ontario, Canada

Jun 12, 2004

#8

• Jun 12, 2004

• #8

sometimes when yours cat are rattling the material inside can wedge itself sideways in the cat chamber causing a block in the pipe like the others said check the exhaust temp before and after. You should also hear a wheezing sound when you hit the gas

 

Black Sun 5.0

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L.I., N.Y.

Jun 12, 2004

#9

• Jun 12, 2004

• #9

Wheezing sound, eh? We may be onto something here.