L.W.(=?iso-8859-1?Q?=DFill?=) Hughes III

Like whenever you hit a hill? Swap tires again, you'll swear
someone put in an aluminum fly wheel.
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/

Eric wrote:
>
> Nope, this is different. I've ran these tires before (for an entire year --
> just changed them out with a smaller set for a few long road trips I had to
> take). Seems like a loss-of-power issue and is somewhat sporratic..
>
> Eric

Tookie

Just for fun, have the muffler shop check the cat.
If you have a bad O2 sensor, mixture will be off
and cat will overheat and melt. Mine looked like
someone ran a welding torch inside it, nothing but
melted slag. And sensor never threw a code,
bad thing is there is no good way to test them, my
truck at the time, a V6 GMC, had four of them, at
$75.00 each
Tookie - Denham Springs, LA
88YJ, 4" lift, 33" TSLs, Lock-Rights
PosiLock, 4.10s

Tookie

Just for fun, have the muffler shop check the cat.
If you have a bad O2 sensor, mixture will be off
and cat will overheat and melt. Mine looked like
someone ran a welding torch inside it, nothing but
melted slag. And sensor never threw a code,
bad thing is there is no good way to test them, my
truck at the time, a V6 GMC, had four of them, at
$75.00 each
Tookie - Denham Springs, LA
88YJ, 4" lift, 33" TSLs, Lock-Rights
PosiLock, 4.10s

Tookie

Just for fun, have the muffler shop check the cat.
If you have a bad O2 sensor, mixture will be off
and cat will overheat and melt. Mine looked like
someone ran a welding torch inside it, nothing but
melted slag. And sensor never threw a code,
bad thing is there is no good way to test them, my
truck at the time, a V6 GMC, had four of them, at
$75.00 each
Tookie - Denham Springs, LA
88YJ, 4" lift, 33" TSLs, Lock-Rights
PosiLock, 4.10s

Tookie

Just for fun, have the muffler shop check the cat.
If you have a bad O2 sensor, mixture will be off
and cat will overheat and melt. Mine looked like
someone ran a welding torch inside it, nothing but
melted slag. And sensor never threw a code,
bad thing is there is no good way to test them, my
truck at the time, a V6 GMC, had four of them, at
$75.00 each
Tookie - Denham Springs, LA
88YJ, 4" lift, 33" TSLs, Lock-Rights
PosiLock, 4.10s

Dana Rohleder

I replaced my CAT on my 93 YJ 2.5 last year due to a loss of power issue.
The CAT had completely blown apart inside. I replaced everything from the
CAT back. I too am noticing a power loss this spring, but it seems to be
more related to the heavy headwinds we have had lately. When the CAT was
causing problems, when I accelerated, it sounded like my exhaust was being
blown thru a soda straw! I could barely accelerate to get onto an
interstate. However, what I am noticing lately is just a loss of power at
highway speeds and hills, but acceleration seems normal. There is no missing
or hesitation and all gauges look fine. But I only notice it in a headwind.
Yesterday, I turned around 180 degrees and the car ran fine with the wind at
my back. BTW, I run stock size tires.

Dana Rohleder
Port Kent, NY

"I'm honored to shake the hand of a brave Iraqi citizen who had his hand cut
off by Saddam Hussein."
George W. Bush, Washington, D.C., May 25, 2004


"Eric" <gymrat@baileyscorner.com> wrote in message
news:Utyuc.20720$mQ4.20123@fe2.texas.rr.com...
> Ok, I'm losing power AGAIN. Seems almost intermittent. I just put on my
> 31's back on yesterday and thought the switch might have been the problem.
> But even since I've put them on the problem has gotten worse. I'd compare
> it to what happened before I got the cat replaced. Not as severe, but I'm
> having trouble accelerating of holding speed on hills (don't think it's
the
> tire change -- I ran those tires for over a year without this problem)
Any
> thoughts? Would a bad muffler be the culprit? Could the crud from the
bad
> cat have plugged it up somehow? How about the O2 sensor? The only
problems
> I've had recently were the cat, which was HOSED. They replaced everything
> between the manifold and the muffler with new stock parts. Could the new
> cat be bad? I'm not hearing any rattling, but the loss of power is there.
> Also, no dummy lights are popping up. I cleaned the air filter today and
> checked the spark plugs (champion truck plugs which are only 2000 miles
old)
> and they're wearing nicely.
>
> Facts to consider:
>
> 99 TJ SE (2.5L, 5 spd)
> 44k miles
> AirAid Intake
> 4.0L Throttle Body
> 31X10.50R15 A/Ts
> Cat replaced last week
> Muffler probably junk
> Noisy when idling in nuetral with clutch pedal out (think throw-out
> bearing... maybe.. don't know much about clutches)
>
> Thanks guys. I was going to order a Dynomax Cat-back system tomorrow, but
> am going to wait and see what this problem is first in case it's going to
> cost big $$ to fix.
>
> Eric
> 99 TJ SE
>
>

Dana Rohleder

I replaced my CAT on my 93 YJ 2.5 last year due to a loss of power issue.
The CAT had completely blown apart inside. I replaced everything from the
CAT back. I too am noticing a power loss this spring, but it seems to be
more related to the heavy headwinds we have had lately. When the CAT was
causing problems, when I accelerated, it sounded like my exhaust was being
blown thru a soda straw! I could barely accelerate to get onto an
interstate. However, what I am noticing lately is just a loss of power at
highway speeds and hills, but acceleration seems normal. There is no missing
or hesitation and all gauges look fine. But I only notice it in a headwind.
Yesterday, I turned around 180 degrees and the car ran fine with the wind at
my back. BTW, I run stock size tires.

Dana Rohleder
Port Kent, NY

"I'm honored to shake the hand of a brave Iraqi citizen who had his hand cut
off by Saddam Hussein."
George W. Bush, Washington, D.C., May 25, 2004


"Eric" <gymrat@baileyscorner.com> wrote in message
news:Utyuc.20720$mQ4.20123@fe2.texas.rr.com...
> Ok, I'm losing power AGAIN. Seems almost intermittent. I just put on my
> 31's back on yesterday and thought the switch might have been the problem.
> But even since I've put them on the problem has gotten worse. I'd compare
> it to what happened before I got the cat replaced. Not as severe, but I'm
> having trouble accelerating of holding speed on hills (don't think it's
the
> tire change -- I ran those tires for over a year without this problem)
Any
> thoughts? Would a bad muffler be the culprit? Could the crud from the
bad
> cat have plugged it up somehow? How about the O2 sensor? The only
problems
> I've had recently were the cat, which was HOSED. They replaced everything
> between the manifold and the muffler with new stock parts. Could the new
> cat be bad? I'm not hearing any rattling, but the loss of power is there.
> Also, no dummy lights are popping up. I cleaned the air filter today and
> checked the spark plugs (champion truck plugs which are only 2000 miles
old)
> and they're wearing nicely.
>
> Facts to consider:
>
> 99 TJ SE (2.5L, 5 spd)
> 44k miles
> AirAid Intake
> 4.0L Throttle Body
> 31X10.50R15 A/Ts
> Cat replaced last week
> Muffler probably junk
> Noisy when idling in nuetral with clutch pedal out (think throw-out
> bearing... maybe.. don't know much about clutches)
>
> Thanks guys. I was going to order a Dynomax Cat-back system tomorrow, but
> am going to wait and see what this problem is first in case it's going to
> cost big $$ to fix.
>
> Eric
> 99 TJ SE
>
>

Dana Rohleder

I replaced my CAT on my 93 YJ 2.5 last year due to a loss of power issue.
The CAT had completely blown apart inside. I replaced everything from the
CAT back. I too am noticing a power loss this spring, but it seems to be
more related to the heavy headwinds we have had lately. When the CAT was
causing problems, when I accelerated, it sounded like my exhaust was being
blown thru a soda straw! I could barely accelerate to get onto an
interstate. However, what I am noticing lately is just a loss of power at
highway speeds and hills, but acceleration seems normal. There is no missing
or hesitation and all gauges look fine. But I only notice it in a headwind.
Yesterday, I turned around 180 degrees and the car ran fine with the wind at
my back. BTW, I run stock size tires.

Dana Rohleder
Port Kent, NY

"I'm honored to shake the hand of a brave Iraqi citizen who had his hand cut
off by Saddam Hussein."
George W. Bush, Washington, D.C., May 25, 2004


"Eric" <gymrat@baileyscorner.com> wrote in message
news:Utyuc.20720$mQ4.20123@fe2.texas.rr.com...
> Ok, I'm losing power AGAIN. Seems almost intermittent. I just put on my
> 31's back on yesterday and thought the switch might have been the problem.
> But even since I've put them on the problem has gotten worse. I'd compare
> it to what happened before I got the cat replaced. Not as severe, but I'm
> having trouble accelerating of holding speed on hills (don't think it's
the
> tire change -- I ran those tires for over a year without this problem)
Any
> thoughts? Would a bad muffler be the culprit? Could the crud from the
bad
> cat have plugged it up somehow? How about the O2 sensor? The only
problems
> I've had recently were the cat, which was HOSED. They replaced everything
> between the manifold and the muffler with new stock parts. Could the new
> cat be bad? I'm not hearing any rattling, but the loss of power is there.
> Also, no dummy lights are popping up. I cleaned the air filter today and
> checked the spark plugs (champion truck plugs which are only 2000 miles
old)
> and they're wearing nicely.
>
> Facts to consider:
>
> 99 TJ SE (2.5L, 5 spd)
> 44k miles
> AirAid Intake
> 4.0L Throttle Body
> 31X10.50R15 A/Ts
> Cat replaced last week
> Muffler probably junk
> Noisy when idling in nuetral with clutch pedal out (think throw-out
> bearing... maybe.. don't know much about clutches)
>
> Thanks guys. I was going to order a Dynomax Cat-back system tomorrow, but
> am going to wait and see what this problem is first in case it's going to
> cost big $$ to fix.
>
> Eric
> 99 TJ SE
>
>

Dana Rohleder

I replaced my CAT on my 93 YJ 2.5 last year due to a loss of power issue.
The CAT had completely blown apart inside. I replaced everything from the
CAT back. I too am noticing a power loss this spring, but it seems to be
more related to the heavy headwinds we have had lately. When the CAT was
causing problems, when I accelerated, it sounded like my exhaust was being
blown thru a soda straw! I could barely accelerate to get onto an
interstate. However, what I am noticing lately is just a loss of power at
highway speeds and hills, but acceleration seems normal. There is no missing
or hesitation and all gauges look fine. But I only notice it in a headwind.
Yesterday, I turned around 180 degrees and the car ran fine with the wind at
my back. BTW, I run stock size tires.

Dana Rohleder
Port Kent, NY

"I'm honored to shake the hand of a brave Iraqi citizen who had his hand cut
off by Saddam Hussein."
George W. Bush, Washington, D.C., May 25, 2004


"Eric" <gymrat@baileyscorner.com> wrote in message
news:Utyuc.20720$mQ4.20123@fe2.texas.rr.com...
> Ok, I'm losing power AGAIN. Seems almost intermittent. I just put on my
> 31's back on yesterday and thought the switch might have been the problem.
> But even since I've put them on the problem has gotten worse. I'd compare
> it to what happened before I got the cat replaced. Not as severe, but I'm
> having trouble accelerating of holding speed on hills (don't think it's
the
> tire change -- I ran those tires for over a year without this problem)
Any
> thoughts? Would a bad muffler be the culprit? Could the crud from the
bad
> cat have plugged it up somehow? How about the O2 sensor? The only
problems
> I've had recently were the cat, which was HOSED. They replaced everything
> between the manifold and the muffler with new stock parts. Could the new
> cat be bad? I'm not hearing any rattling, but the loss of power is there.
> Also, no dummy lights are popping up. I cleaned the air filter today and
> checked the spark plugs (champion truck plugs which are only 2000 miles
old)
> and they're wearing nicely.
>
> Facts to consider:
>
> 99 TJ SE (2.5L, 5 spd)
> 44k miles
> AirAid Intake
> 4.0L Throttle Body
> 31X10.50R15 A/Ts
> Cat replaced last week
> Muffler probably junk
> Noisy when idling in nuetral with clutch pedal out (think throw-out
> bearing... maybe.. don't know much about clutches)
>
> Thanks guys. I was going to order a Dynomax Cat-back system tomorrow, but
> am going to wait and see what this problem is first in case it's going to
> cost big $$ to fix.
>
> Eric
> 99 TJ SE
>
>

Eric

I ordered a new cat-back system yesterday and will have it in by this
weekend. Hopefully that'll fix the problem. If not, I'll take it back to a
shop to have them check it out. Initially the dealer said I needed a new O2
sensor, but that was becuase they thought the threads were seized. They got
it out, but maybe they damaged it in the process...

Eric
99 TJ SE
"Tookie " <tookie_nospam@***.net> wrote in message
news:40bcb478.1262935796@news.east.***.net...
> Just for fun, have the muffler shop check the cat.
> If you have a bad O2 sensor, mixture will be off
> and cat will overheat and melt. Mine looked like
> someone ran a welding torch inside it, nothing but
> melted slag. And sensor never threw a code,
> bad thing is there is no good way to test them, my
> truck at the time, a V6 GMC, had four of them, at
> $75.00 each
> Tookie - Denham Springs, LA
> 88YJ, 4" lift, 33" TSLs, Lock-Rights
> PosiLock, 4.10s