Serious power loss - JeepForum.com
 
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post #1 of 15 Old 08-31-2007, 03:16 AM Thread Starter
shinigami
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Serious power loss

after hitting a few bumps on the road, i have lost almost all power .
going up hill, with a starting speed of 50, i end up at 30 or 25.
it seems to require more rpm's to maintain a constant speed and wont go above 50
there isnt much unusual noise either and shifts through all gears fine.
will this be a serious rebuild to the transmission or might it be something that i might be able to do with basic tools? i had it rebuilt at the beginning of the year and am still a little wallet sore from it.


Quote:
Originally Posted by jmathis3 View Post
lots of hair pulling, tool throwing, beer drinking, swearing, and eventualy it will start. haha good luck.
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post #2 of 15 Old 08-31-2007, 04:33 AM
rustywrangler
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Honestly it sounds like your cat just took a dump. It clogged the exaust and you lost your high end power.


Congenital Heart Disease is a reality for me, BOTH of my children have it. Please read up and become aware for future generations

Lydia Ann-Acquired 08/05/05 Open Heart surgery 08/10/05
Jacob Patrick-Acquired 01/17/08 Open Heart surgery 02/15/08
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post #3 of 15 Old 08-31-2007, 05:20 AM
EABiker
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x2 on the cat, the bump jarred loose the internal honeycomb and it has blocked your exhaust. You may only need to replace the cat if none of it has found its way back into the muffler. Now is a good time to upgrade to a hi-flow version!
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post #4 of 15 Old 08-31-2007, 06:09 AM
richmond1273
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there is also the possibility of a crack in your exhaust manifold. check just above the collector where the pipes start to combine. it doesn't take much of a crack to lose some power. here is where it seems to a common spot.




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post #5 of 15 Old 08-31-2007, 10:02 AM Thread Starter
shinigami
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how can i see if it is my cat with out removing it?
i could swear it was my trans but that sounds like a better problem than a rebuild

Quote:
Originally Posted by jmathis3 View Post
lots of hair pulling, tool throwing, beer drinking, swearing, and eventualy it will start. haha good luck.
I LOL'd
I.Y.A.A.Y.A.S.
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post #6 of 15 Old 08-31-2007, 10:04 AM
rustywrangler
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Get under your rig and bang a rubber mallet or your fist on the cat. If it rattles it is the culprit. It may also be so clogged that you will not be able to tell unless you take it out. Another option is to disconnect your exaust at the manifold and see how it runs. I know, loud but you would be able to tell if there was restriction still or not.


Congenital Heart Disease is a reality for me, BOTH of my children have it. Please read up and become aware for future generations

Lydia Ann-Acquired 08/05/05 Open Heart surgery 08/10/05
Jacob Patrick-Acquired 01/17/08 Open Heart surgery 02/15/08
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post #7 of 15 Old 08-31-2007, 10:33 AM Thread Starter
shinigami
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taped it and no rattle.
no cracks along the manifold.
gona try unbolting it later.
any other ideas?

Quote:
Originally Posted by jmathis3 View Post
lots of hair pulling, tool throwing, beer drinking, swearing, and eventualy it will start. haha good luck.
I LOL'd
I.Y.A.A.Y.A.S.
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post #8 of 15 Old 08-31-2007, 09:41 PM Thread Starter
shinigami
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gonna remove the cat tonite, if it is dead where should i go to get a good one?

Quote:
Originally Posted by jmathis3 View Post
lots of hair pulling, tool throwing, beer drinking, swearing, and eventualy it will start. haha good luck.
I LOL'd
I.Y.A.A.Y.A.S.
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post #9 of 15 Old 08-31-2007, 10:07 PM
Burnerman
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I got my cat from these guys.http://www.1aauto.com/1A/CatalyticCo...CD00069/378849

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post #10 of 15 Old 08-31-2007, 10:38 PM
SWAMPED
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can a cracked exhaust manifold cause powerloss such as engine surges and idling a little rough??
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post #11 of 15 Old 09-01-2007, 05:40 AM
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Quote:
Originally Posted by SWAMPED
can a cracked exhaust manifold cause powerloss such as engine surges and idling a little rough??

YES


Congenital Heart Disease is a reality for me, BOTH of my children have it. Please read up and become aware for future generations

Lydia Ann-Acquired 08/05/05 Open Heart surgery 08/10/05
Jacob Patrick-Acquired 01/17/08 Open Heart surgery 02/15/08
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post #12 of 15 Old 09-01-2007, 10:46 AM Thread Starter
shinigami
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do i need to weld a cat on or can i clamp and use jb weld?

Quote:
Originally Posted by jmathis3 View Post
lots of hair pulling, tool throwing, beer drinking, swearing, and eventualy it will start. haha good luck.
I LOL'd
I.Y.A.A.Y.A.S.
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post #13 of 15 Old 09-01-2007, 12:06 PM
rustywrangler
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Quote:
Originally Posted by shinigami
do i need to weld a cat on or can i clamp and use jb weld?

My entire exaust was muffler clamped togeather for a few months. NO JB WELD!!!!!!!!!!

Should not be a problem. Only reason I welded it now is because I can weld now


Congenital Heart Disease is a reality for me, BOTH of my children have it. Please read up and become aware for future generations

Lydia Ann-Acquired 08/05/05 Open Heart surgery 08/10/05
Jacob Patrick-Acquired 01/17/08 Open Heart surgery 02/15/08
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post #14 of 15 Old 09-01-2007, 02:18 PM Thread Starter
shinigami
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y no jb weld?
its rated for 600 degres.

Quote:
Originally Posted by jmathis3 View Post
lots of hair pulling, tool throwing, beer drinking, swearing, and eventualy it will start. haha good luck.
I LOL'd
I.Y.A.A.Y.A.S.
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post #15 of 15 Old 09-01-2007, 03:29 PM Thread Starter
shinigami
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how hot does it get? 250 degrees?

Quote:
Originally Posted by jmathis3 View Post
lots of hair pulling, tool throwing, beer drinking, swearing, and eventualy it will start. haha good luck.
I LOL'd
I.Y.A.A.Y.A.S.
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