I have a 1998 Cherokee, 5 speed manual transmission....I can shift, and it seems to stay in gear, but I don't have as much torque as I used to. I am usually in 4th by the time I'm going 30mph and if I have to get on the highway I can't get past 45 or 50mph...I have heard possibly a clutch issue, I have also heard it might be a catalytic converter/exhaust issue. Please help!
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Mar 5, 2011 - Before guessing at transmission problems, check the fluid level (car warmed up, ... that do not show up as PCM codes (like shift A&B solenoid failures, for example). ... 1-2 shift is delayed and harsh, may not shift into OD: Check TPS for ...goes into 3rd gear: Reaction planetary is worn out due to high miles or ...
I had a similar problem for months with my 98 Jeep Grand Cherokee 4.0L. Mine used to take a long time to shift and usually wouldn't shift until speeds got up to about 50mph or so for about a mile and a half then would work good afterwards until I shut it off and allow it to sit for a few hours then I would have a repeat of the same problem. I was about to replace a relay in the tranny when someone suggested that I replace the fluid and filter. I took it to Quick lube shop and had the filter and fluid replaced. Still running like a charm going on five months now.
Cruising rpm even after the OD has engaged has a lot to do with the differential gear ratio and tire size. There will always be a variation between different vehichles due to that alone. To see if the OD is working, at about 50mph, lightly touch the brake pedal. If the rpms increase for a moment then the OD was engaged. (touching the pedal momentarily disengages it...good thing to know when hill climbing!
You sure its the transmission? Wheezing sound is usually the catylitic converter becoming plugged. Also...at 3-5K rpm you are not idling, you are reving the engine...(in that case, trans may be slipping or flairing between shifts, unless the unit is staying in one gear and just delaying shift till you reach that rpm. actual shift point should be close to 2,000rpm) I'd check the cat first.
if this is a 5 speed manual transmission...all you need to do before putting your jeep into reverese is puting it into first gear and then shifting it to reverse to avoid any grinding or problems shifting into reverse...this isn't a problem just a poor jeep design by not installing an extra gear to eliminate this grinding or shifting problem