Transmission - tune up??? help - Jeep Patriot Forums
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post #1 of 3 (permalink) Old 06-17-2019, 05:33 PM Thread Starter
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Transmission - tune up??? help

2014 Jeep Compass 4wd question.

Yesterday I noticed my Jeep was whinning and not shifting while driving the car. Took it to a garage and they told me there is a transmission issue.

Dropped off at the transmission shop and they called today to tell me I need a tune up because they arent sure it is a transmission issue. CVT issues can be resolved with a tune up. They are saying they ran a code and there was a major misfire with the engine.

$400 for a tune up and replacement of the spark plugs and coil#4 and that might not solve the issue.

Does this sound normal?? Looking for some direction if I should moe forward.

Hell i can replace the spark plugs myself and the coil #4.

Any help would be appreciated.

Thank you
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post #2 of 3 (permalink) Old 06-17-2019, 07:48 PM
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Plugs are a cinch, as is the coil pack. There are threads on here if you need them.

There really is no such thing as a transmission tune-up with a CVT. However, your fluid should be changed at 50-60,000 miles (the recommended interval in the owners manual is far too long). Tranny service on a CVT is more expensive than a conventional automatic so if your mechanic is honest that's probably where most of the cost is.

How many miles on your Patriot? I've had two CVTs and one failed at 110,000 -- I'd call that premature. My symptom was a humming bearing. It sounded for all the world like a conventional transmission failing (I've had those fail too, and at less mileage).

The second made it to 270,000 miles before it started slipping. There's no cure for that -- once the belt gets chewed up, its a goner.

Give this thread some time. There's a lot of folks on here more knowledgeable than I. I can only share my experience.

After further review . . . if your Patriot is a 2014, maybe you have a 6-speed automatic. In that case my post is all wrong.
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post #3 of 3 (permalink) Old 06-19-2019, 02:44 PM
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what I think they are saying is that its not a transmission issue, but engine misfire issue
poor performing engine may feel like a transmission issue
not sure what they are doing as part of "Tune UP" oil/spark/filter change?
$400 is high but its shop prices, never know what they are including/charging for
my concern is what was causing the misfire?
if bad coil was the problem may fix the problem
but always the chance something else caused the problem, and bad plug/coil was the result not the cause.
did they give you the codes they pulled?
tune up may help temporarily but may not address cause of misfire and can return
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