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Transmission or something else? DEALER UPDATE 7/17...HELP

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tacticsman2

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Discussion starter · #1 · (Edited)
Hi Guys,
Just recently finished a 700 mile trip and was noticing on uphill drives and just straight, constant 2100 RPM there is a whine to the engine. My passengers could just barely hear it over the air conditioning being on so I turned it off to listen. My patriot is the 2.4L auto with almost 75,000 miles. I'm thinking it might be a belt or i need a transmission fluid change (would be the first)? I don't like to go on wild goose chases with my dealer because last time they replaced a strut because I complained of squekyness of the suspension. I later investigated myself when the sound came back a year later and found it to be a dry bushing. I'm not very knowledgeable of the patriots mechanical system, it has operated flawless since I bought it in June 2011 and hope this isn't a sign of things to come.
 
#4 ·
I get this quiet whine too, but only when my air conditioning or defrost/defogger has been running for a while. I just had my transmission fluid changed this past February (cost around $350 here in SE Pennsylvania), but this spring and summer the sound is still there when running the AC for a while. The AC works great, the engine isn't over heating, nothing but the quiet compressor sounding whine that is in unison with the normal revving of the engine, so in my opinion there is little to worry about.

With that said it still can't hurt to get the tranny fluid serviced if you have the extra cash to spend.
 
#5 ·
It could also be the alternator or the ODA Pulley. Both of those went out on mine recently and after they were replaced the noise disappeared.

At 75,000 miles I would doubt that it is the tranny fluid and if it was the noise is Much louder than the A/C (personal experience). However, I would not rule it out.
 
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#6 ·
the_jeep_now said:
I'd say CVT fluid needs to be changed. As it gets hot, it's foaming creating that whine.
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yep! been there.

it's common but don't ignore it though. The viscosity in your tranny fluid is shot. Jeep says to change it every 60k miles... so yeah it's time.

I have a great local mechanic I use but this one needs to be done at the dealer. You need to Pony up $300 for the fluid and filter change and you'll be on your way. Shouldn't have to do it again for another 50k+ miles. I know it hurts but $300 in maintenance isn't bad every 50-75k miles if you think about it.
 
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#7 ·
I wonder how many people have done it by themselves before. Shouldnt be that bad. you could probably flush it using a power-drill hose pump and flush it that way. maybe save $100 or so. I can't imagine the fluid is cheap.
 
#9 ·
don't totally negate tires in this.

If you are on original rubber and the tread is nearing or at the wear bars you can get a whine at steady state speeds.

I get it on one certain rotation, tracked that down by actually marking the tires and moving therm around...I have two wheels that when they are both on the front give me a whine at steady state highway speed.

You can check this by using cruise and getting to your rpms and then (if you have the cvt) pull the shifter down, cruise will hold your speed, rpms will rise a bit but, in my case, the whine continues.

My original equipment tires (sra's) are just above the wear bars at 92,000 km.
 
#10 ·
Hey tacticsman2, when you have your Pat serviced are you going to ask them about the sound? It would be interesting to get a real diagnostic on it if you're going to be there.

When I had my transmission serviced I didn't mention the whine, because I was not completely convinced it was related to the transmission. I figured when they drained the old fluid if something looked out of sort, they would tell me, but my dealer said all looked good with the old fluid, he even asked why I had it done, there were only around 31,000ish miles on it at the time. I just told him the pat is an '09, I'm the second owner, and I felt better just making sure it was fresh and maintained.

I also noticed after I turn my AC off, the sound goes away over time, 5-10 minutes or so.
 
Discussion starter · #11 ·
dirtyduke said:
Hey tacticsman2, when you have your Pat serviced are you going to ask them about the sound? It would be interesting to get a real diagnostic on it if you're going to be there.

When I had my transmission serviced I didn't mention the whine, because I was not completely convinced it was related to the transmission. I figured when they drained the old fluid if something looked out of sort, they would tell me, but my dealer said all looked good with the old fluid, he even asked why I had it done, there were only around 31,000ish miles on it at the time. I just told him the pat is an '09, I'm the second owner, and I felt better just making sure it was fresh and maintained.

I also noticed after I turn my AC off, the sound goes away over time, 5-10 minutes or so.
Click to expand...
I was going to have it done when I get the inspection, I don't think they would notice it unless they took it on the highway which I know they won't do for an inspection. I don't think that checking the transmission fluid is standard protocol for a NYS inspection. I also don't want them to speculate too much because of my previous issue with the struts. I am the original owner and I've replaced the tires 5,000 miles ago, since then they were balanced twice (don't ask). I can see credit in the transmission fluid change simply by the maintenance schedule and my friend who also has a CVT Nissan who had similar issues. Appreciate all the feedback guys.
 
#12 ·
Mine wines too at highway speeds when only on gas. I have a 5 SPEED STICK though. Perhaps these wine noises are tires or wind resonating something?

I had a 2010 accent that had a weird noise only when at high speeds and hitting gas. I had Pirelli tires on it and they were new. Well had driven some before noise started after buying them. I had other issues with tires so discount replaced under warranty.

The noises went away.

So I find it interesting that alot of people have wine at high speed and it does not matter if cvt or stick. Perhaps it is tires or some other design characteristic as something wears it resonates?

Thoughts?
 
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Discussion starter · #13 ·
The whine specifically on my jeep occurs when under heavy load, uphill acceleration on highway with air conditioning or very long drives (300+ miles). Turn off the air conditioning and it can be heard more clearly. Once back on level ground cruising at 68-70 mph, the noise isn't there. My daily commute takes me 70 miles round trip and I've never noticed the sound, only during a recent road trip (about 400 miles) did it become present. After the road trip last week, my daily commutes do not replicate the whine.
 
Discussion starter · #14 · (Edited)
Had my scheduled visit to the dealership today for the transmission service package. After scheduling a week in advance and taking the morning off it was in the shop for a half hour then I was called saying my vehicle has the 64R CVT transmission which is a sealed unit and does not require servicing. I showed them the techCONNECT brochure the dealership gave me from Chrysler for the scheduled service intervals and asked why does it show it at 64,000 to replace the auto transmission fluid. The service managers said that didn't pertain to my Patriot model (2011 4wd auto Sport). I've since contacted Jeep through their customer service and I'm now waiting their response (one business day they said). Whats the truth behind the transmission?

Let me also add, there were about 12 cars in for service this morning which is why I suspect they didn't want to get involved if the service could be performed. I was the first scheduled appointment of the day.
 
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tacticsman2
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