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'92 cherokee not moving under it's own power


 
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matt the pilot
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Joined: 22 Jun 2007

PostPosted: Wed Sep 12, 2007 9:47 pm    Post subject: '92 cherokee not moving under it's own power Reply with quote

Ok I've got a '92 Cherokee, 4" lift on 33" tires. Once it warms up it doesn't want to go any more. I was told that a sensor has gone bad, however that doesn't make sense to me. Any ideas?
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ThePhantum
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Joined: 23 Jan 2004
Location: I knew it...I'm surrounded by Assholes!

PostPosted: Thu Sep 13, 2007 9:48 am    Post subject: Reply with quote

Define "doesn't want to go anymore"...does it lose power, drop out of gear, not shift gears, etc.

If it only happens after it warms up, it could very likely be a sensor as the ECU ignores the input from certain sensors until it reaches a minimum operating temperature.
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matt the pilot
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Joined: 22 Jun 2007

PostPosted: Thu Sep 13, 2007 4:49 pm    Post subject: Reply with quote

It starts losing power as if it were slipping, and then it gets to the point where it won't move anymore.
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Brad The Best
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Joined: 14 Jan 2007
Location: Kamloops B.C Canada

PostPosted: Thu Sep 13, 2007 8:50 pm    Post subject: Reply with quote

so , when it "looses power" do you mean you can floor it and all it does is bogg down or it hits 5000rpm and you go no wear ?

auto tranny?
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ThePhantum
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PostPosted: Fri Sep 14, 2007 5:01 am    Post subject: Reply with quote

It almost sounds like it's starving for fuel....the first thing I would do is carry a fuel pressure gauge and when it has the problem check pressure at the rail.
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Glowyrm
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Joined: 27 Mar 2007
Location: Long Island NY

PostPosted: Fri Sep 14, 2007 9:01 am    Post subject: Reply with quote

Sound like mine. Idle fine, go to step on gas, no go and some bucking. Turns out that the fuel pump sucked(or not sucking), Check there first. Get a Cheap fuel pressure checker from the Auto part store.
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