sqrogg-96-zj
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« on: February 13, 2011, 02:04:58 PM » |
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my jeep zj runs real good except when i go full throttle it has no power what could cause this i just did a full tune up on it anyone help me figure this problem out. its the 4.0 straight 6. 5 speed
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Axle
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« Reply #1 on: February 13, 2011, 02:24:38 PM » |
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I vote converter. no check engine light?
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82 cj-7
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Twisty
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iFab, and you can too!
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« Reply #2 on: February 13, 2011, 03:22:28 PM » |
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I just went through this with a 2.5L YJ. Turned out to be an O2 sensor.
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88 MJ buggy, 4.0/AW4, 203/205, 3 link front/4 link rear on airshocks, 42" Iroks, full hydro
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RustedWrangler
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« Reply #3 on: February 13, 2011, 04:31:58 PM » |
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I'd do the fuel filter first because it's the cheapest and even if that's not the problem at least you have a new fuel filter.
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91 YJ
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Krome
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« Reply #4 on: February 13, 2011, 10:29:07 PM » |
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check spark and fuel, see if its within spec.
Is this vehicle obd2?
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HEYzipupyourfly
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« Reply #5 on: February 13, 2011, 11:29:00 PM » |
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<![CDATA[<a href="http://www.youtube.com/v/fROq-ZxtvnU&rel=1" target="_blank">http://www.youtube.com/v/fROq-ZxtvnU&rel=1</a>]]>
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« Last Edit: February 13, 2011, 11:29:29 PM by HEYzipupyourfly »
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I once read in a bathroom stall, "You can't rush perfection"
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sqrogg-96-zj
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« Reply #6 on: February 14, 2011, 10:29:22 AM » |
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so i have changed my fuel filtter and its still doing it i was also woundering if it could be a vacume line and or fuel pump my trans am did the same thing and it was the fuel pump but my T.A is also carbarated so i didnt think it would be connected.
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jps4jeep
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Average at best
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« Reply #7 on: February 14, 2011, 02:47:32 PM » |
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I say Cat.. How old is it.
Edit:
96 ZJ should be ODB!!, so if it was a o2, it would throw a code.
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« Last Edit: February 14, 2011, 02:48:23 PM by jps4jeep »
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To error is to be human; to error and blame it on someone else, that managerial potential.
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JoGumby
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« Reply #8 on: March 14, 2011, 08:55:26 AM » |
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I agree with Cat problem. Try this....if cruisin on highway is ok BUT on hills you slowdown & as you try to accellerate you still slow down......pretty classic cat problem.
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Posimoto
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« Reply #9 on: March 14, 2011, 09:29:42 AM » |
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Or you could save fuel on the test drive and use a vacuum gauge to rule out the cat or dirty air filter.
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« Last Edit: March 14, 2011, 09:30:06 AM by Posimoto »
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Krome
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« Reply #10 on: March 14, 2011, 11:00:55 PM » |
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I say Cat.. How old is it.
Edit:
96 ZJ should be ODB!!, so if it was a o2, it would throw a code.
sluggish o2 sensors that do not go from closed to open loop in proper time do not always throw codes, mine didnt |
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JP
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« Reply #11 on: April 25, 2011, 04:54:36 PM » |
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Gut the Kitty  Did you noticed if the rest of the exhaust system suffered from rock bash? A few crushes in the exhaust pipe will restrict flow as well. I had a 97 and was losing power over time, gutted the cat and woke it back up. |
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Common sense isn't so common  |
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