Question about 1989 Jeep Cherokee

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My 1989 jeep Cherokee loses power going uphill and spits and bucks at low speed until you get to a regulated 45 mph and there is a high pitched whistling sound

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6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

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SOURCE: My 03 Wrangler shakes only at 45 mph

My Death Wobble started immediately after I installed a set of Coil Spring Spacers (to lift 1.75 inches). Turned out, the DW was because while changing the height, I also lowered the CASTER angle in the front end. So, to fix it, I could have purchased a set of eccentric bolts for $50+. Instead I went out and purchased a piece of 1.5 inch flat bar for $10 from OSH. I cut out 4 1.5 inch squares. Then i drilled 7/16 inch holes centerline, but close to one side (in exactly the same place) on all for squares. I then removed the lower control arm bolts, nuts and washers. I installed these square offset washers I made so the front axle would be pushed forward (to increase the Caster angle). The toe setting changed a bit, so I reset them to about 1/8 inch toe in. After driving my Jeep, I noticed there is no more DW. The steering wheel was off center, but after 3 attempts, I have that perfectly centered. I have every intension of having the alignment checked, but not till after I find the new tires I want. If anyone is interested, I can draw out and photograph the cure and send it to you. My e-mail is bb62471(at)yahoo(dot)com.

Posted on Feb 13, 2009

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SOURCE: jeep won't go over 60 mph loss of power

Check for a clogged catalytic conveter or weak fuel pump. Remove the O2 sensor so exhaust can flow out hole and test drive it. If it's better replace the cat or look for kinked or dented section of the exhaust. If it didn't help, have the fuel pressure tested as well as the ignition advance and timing chain.

Posted on Apr 16, 2009

mcgyver468
  • 710 Answers

SOURCE: p0320 jeep cuts off at speeds of 60 mph HELPPPPPPPPPP

TRY TO TIGHTEN THE PCM CONNECTORS UNDER THE HOOD ON THE PASSENGER SIDE FIREWALL. COULD BE A BAD CONNECTION. THERE ARE THREE LARGE WIRE CONNECTORS GOING INTO THE COMPUTER HELD IN PLACE BY THREE BOLTS. YOU'LL NEED A 10 MM. SOCKET AND A RATCHET.HOPE THIS HELPS. GOOD LUCK

Posted on May 02, 2009

  • 6982 Answers

SOURCE: 94 jeep grand cherokee laredo v8 5.2l automatic.

You can check fluid level by removing the rubber plug in the cover. Fluid is full when on level ground, it is just at the edge of the hole (or very close) if you are already getting noises out of there, you can remove the cover and inspect gears for wear or breakage. If you find a large amount of metal debris in the lube it tells you something bad is going on back there. Although rebuildable, it's not a home job...requires exact settings in order to operate properly. You can find good units far cheaper than even a gearset costs in any scrapyard. to match ratio, count the teeth on the ring gear and the pinion gear. the replacement MUST have the exact same number. Before swapping diffs, check all back there to make sure noise is not from somewhere else.

Posted on Jun 20, 2009

  • 1 Answer

SOURCE: jeep 2008 patriot esp light on Malfunction

Check under drivers door sill step. There is a spice I believe the wires are red or pink in color. The splice will be wrapped in black hockey tape looking stuff. Peel the the hockey tape stuff off and you will find that this splice is corroded and not making contact anymore. You can repair this splice and your problems will be fixed. Be sure to use some good heat shrink on your repair to prevent from happening again.

Posted on Oct 13, 2009

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3 Answers

Jeep cherokee loses power going uphill


change the transmission fluid and filter. Make sure the bands are adjusted properly.

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you really need to be more specific .......Moving? sitting still? engine running? what speed? braking? cold? hot? faster you go it gets worse? better? does it follow the speed of the engine? MPH? doe sit change pitch on/off the gas pedal? turning right or left. change pitch?

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Its not the switch or the controller in the instrument cluster. On my jeep there was a panel on the passenger side under the dash board. It helped me find it by turning on the heater and going toward the sound of the blower. On the backside of the panel was a series of little coils that control the different speeds. one of those coils had been broken.

Feb 20, 2010 | 1989 Jeep Cherokee

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This is most likely the throttle position sensor. It sounds odd I know, but the throttle position sensor helps tell the transmission when to shift. This same thing happened to my Jeep. The sensor is located on the intake manifold on the engine and costs around 45 bucks.

To the guy who spent 2300 dollars getting a transmission rebuilt: They saw you coming and you got totally screwed over. I can get a cherokee transmission rebuilt any day of the week in the range of 800 to 1000 dollars. WOW check out your shops and mechanics a little better before you jump into a rip off.

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If fuel filter isn't on the frame near the l/r wheel it's on top of the fuel sending unit on the tank.

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Sounds like low fuel pressure. i.e. fuel pump, fuel pressure regulator, or fuel filter.

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Fuel filter is the main culprit when you lose power going uphill. Going level or downhill means that the engine doesn't have to work all that hard and doesn't demand much fuel, so a partially clogged filter can usually flow enough to allow the car to run smoothly. Going uphill requires signficantly more fuel, and if the filter is clogged up, it won't be able to flow enough fuel. This will bog the car down and cause you to lose speed. Change your fuel filter.

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