Question about 1998 Jeep Cherokee

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89 jeep shifting at high rpm never hits over drive

Was messing around yesterday with my jeep changed fuel filter then woke up and went to store all of a sudden it shifts at high rpm and feels like it never hits od .. i changed trans filter and fluid today and well still shifts really hard and at high rpm please help cant afford major repairs right now with this economy ??

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I have a 89 four door that i was driving down the road and was doing just fine i stopped and filled it up and know its doing the same thing but it almost red lines before it shifts wats goin on

Posted on Sep 28, 2012

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Check to make sure that you somehow did not disconnect or move any linkage that goes from the carburetor (or injection air inlet if you have f/i) to the transmission. on many vehicles this linkage controls internal trans pressure and can influence shift points and application harshness. Your post indicates that you were sleeping when you changed the filter...Don't work on cars unless you are awake!!!
PS: If you have f/i, you would have to be underneath the car...did you somehow cut a wire or catch trans linkage when lifting it?

Posted on Feb 17, 2009

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Posted on Jan 02, 2017

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1 Answer

Good luck fuel pump on my 94 Silverado is not pumping enough pressure at high speeds when I push it to the floor will have shifting problems


Try new fuel filter before going to hassle of fuel pump change. Not sure what shifting problems you are talking of...automatic or manual? Shifting at high speed? You mean high rpm or absolute speed ..+60 mph?

Feb 27, 2015 | Cars & Trucks

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The first thing I have to ask you is When was the last time the transmission was serviced? Transmission fluid and filter change?
A thumbs up would be greatly appreciated if this answer is helpful to you. Have a GREAT DAY and GOD BLESS YOU.

Nov 22, 2014 | 2001 Jeep Grand Cherokee

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Sounds like you have either an igniton switch problem or your alternator is bad. Take it to the nearest auto part store and they will check your alternator and codes for free. Good luck.

May 12, 2014 | Cars & Trucks

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Hey i have a 97 jeep grand chereokee i wen't to the nearest autozone the code came p0740.As im driving the RPM is going to high a low speeds on the highway feel like it down shifting between 3 RPM N...


P0740-TORQUE CONVERTER CLUTCH CONTROL CIRCUIT...

POSSIBLE CAUSES:

RELATED DTC P0750 PRESENT
INTERMITTENT WIRING AND/or CONNECTORS
INCORRECT FLUID LEVEL
INTERNAL TRANSMISSION PROBLEM - TCC OUT OF RANGE
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Further diagnostic with a good scan tool will help, could be all you need is a new solenoid or some electrical repairs. Hope this helps.

Jul 06, 2011 | 1997 Jeep Grand Cherokee

1 Answer

Seems as if the cable is sticking causing the transmition not to shift until high rpm


What model Jeep? This is normally caused by the filter not flowing fluid correctly. A fluid and FILTER change will solve the problem 99% of the time. Do not do the "Trans Flush" at the quick lube. They do not change the filter.

Mar 17, 2011 | Jeep Cherokee Cars & Trucks

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I have a 1999 jeep cherokee that has intermitant transmission problems 1)shifting up it wind out to 2k-3k before shifting 2) at higher speed it feels as if it slips out of overdrive rpm increase but speed...


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3 Answers

High RPM between shifts or at idle after driving/ warm engine


Clean the choke and linkage around the air cleaner again.

You are on the right track.

I will give ALL the intake manifold bolts a 1/6 turn....just to rule out leaky intake manifold gasket.

Check for loose or leaky vacuum hose.

Since you truck is 1987. I will replace all small vacuum hoses.

Change one at at time.

====
Change the fuel filter
====
Test fuel pressure
====
Check the ohm specification on the coil.
====
If the wires are over 3 years old then replace it
Check and clean contacts
====
Make sure the wires are not cross.
====

Do a good carb. cleaning and use Chevron gas for one tank full. Do some high RPM highway ran and see does it improve.

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Could be the cat, They can make some pretty strange noises...Disconnect it and take it for a short ride and see if rpm's are fine (with it removed you probably won't be able to hear the noise though)

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2 Answers

Fuel ECU fuse keeps blowing (30 amp)


Your fuel pump is internally binding and causing the fuse to blow. Change the pump (and filter while you're back there.)

Jun 14, 2009 | 1993 Jeep Wrangler

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