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post #1 of 10 Old 12-14-2012, 11:45 AM Thread Starter
Rican142
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1997 TJ Wrangler 
 
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Location: Vineland
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Caddy converter

What r the results of a blocked up catalytic converter


64 Ford F-100
89 Jeep Comanche
97 Jeep Wrangler
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post #2 of 10 Old 12-15-2012, 06:32 PM
ftpiercecracker
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1990 MJ Comanche 
 
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Overheating, and very noticeable loss of power, low exhuast pressure
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post #3 of 10 Old 12-15-2012, 08:31 PM Thread Starter
Rican142
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Would it cause sputtering and back firing?

64 Ford F-100
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post #4 of 10 Old 12-16-2012, 02:23 PM
97_4popper
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the times I've had one fail, it just either rattled or lost power and wouldn't rev.

No sputtering or backfiring.

90 MJ 4.0 4X4 5sp LB Pioneer Big Ton.
Truck contains parts from 3 MJs, 2 XJs, 1 TJ and a dishwasher.
http://img.photobucket.com/albums/v1...IMG_0101-2.jpg
Check out comancheclub.com...
My build thread: http://comancheclub.com/forums/viewt...hp?f=7&t=27756
Wifes: 97 TJ 2.5 4X4 5sp 31's stock. . . Slow but; reliable.
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post #5 of 10 Old 12-16-2012, 05:43 PM Thread Starter
Rican142
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Huh, aiight

64 Ford F-100
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post #6 of 10 Old 12-16-2012, 09:03 PM
97_4popper
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If you are sputtering and backfiring, you may have a number of problems.
It sounds like timing. Perhaps timing chain slipped a tooth or is shot.

Are you over on Comancheclub yet?

90 MJ 4.0 4X4 5sp LB Pioneer Big Ton.
Truck contains parts from 3 MJs, 2 XJs, 1 TJ and a dishwasher.
http://img.photobucket.com/albums/v1...IMG_0101-2.jpg
Check out comancheclub.com...
My build thread: http://comancheclub.com/forums/viewt...hp?f=7&t=27756
Wifes: 97 TJ 2.5 4X4 5sp 31's stock. . . Slow but; reliable.
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post #7 of 10 Old 12-16-2012, 10:28 PM Thread Starter
Rican142
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Could be, and yes but for some reason i cant log on

64 Ford F-100
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post #8 of 10 Old 12-17-2012, 06:22 AM
97_4popper
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Join Date: Jan 2005
Location: Guston
Posts: 469
They have a funky activation that has to be done manually by an admin. I'll PM one of them and see if they can help.

90 MJ 4.0 4X4 5sp LB Pioneer Big Ton.
Truck contains parts from 3 MJs, 2 XJs, 1 TJ and a dishwasher.
http://img.photobucket.com/albums/v1...IMG_0101-2.jpg
Check out comancheclub.com...
My build thread: http://comancheclub.com/forums/viewt...hp?f=7&t=27756
Wifes: 97 TJ 2.5 4X4 5sp 31's stock. . . Slow but; reliable.
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post #9 of 10 Old 12-17-2012, 07:57 AM Thread Starter
Rican142
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Join Date: Mar 2012
Location: Vineland
Posts: 1,226
I just recreated one. Its lettin me log on and crud but i didnt get a comformation email

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post #10 of 10 Old 12-25-2012, 08:39 AM
cruiser54
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CRUISER’S VACUUM TEST FOR EXHAUST RESTRICTION

Your vacuum gauge should come with an instruction booklet outlining the procedure. Hook the vacuum gauge up to a source on the intake manifold. Start the engine and note the vacuum reading. Usually 17 to 21 inches of vacuum. Throttle the engine up to 2,000 to 2,500 RPM for 20 seconds or so and the vacuum reading should stabilize to the same reading you got at idle. Let the throttle snap shut. The vacuum reading should shoot up about 5 inches of vacuum higher for a second and then come quickly down to the original reading. If the vacuum reading stays high and comes down slowly with jerky needle movements, you have an exhaust restriction.

If you own a Renix Jeep, you'll want to check this out.

An index to over 30 write-ups can be found in the link below

www.cruiser54.com

My Jeep Technical Photos

http://www.cherokeeforum.com/g/album/1725214
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