I've been using my 2010 Jeep Patriot for a daily driver since 2017, and Uber on the weekends for the last 4 months. Its been very reliable and problem free. Just yesterday, my wife and I had to drive from Indianapolis Indiana to Kentucky. This is the longest stint of high speed driving i've done in a LONG time. On the way back, a strange problem started to manifest. I can explain it like this... At any speed over 60, at any throttle level (including coasting), the RPM would climb slowly from ~1800 to 2000 to about 3500 then it would snap back down to the lower range. It wasn't a jerk or a bump.. almost like i was shifting from autostick '5' to D.
On the way back home, i lost power. as in, i could floor it and the jeep would not even move... the engine didn't rev. I understand how the engine works and i know the drive by wire system was simply not opening the throttle to protect the transmission. Upon coming to a stop, it shuddered HORRIBLY, banging and bucking, but not dying. Once I would come to a complete stop, it would sit like nothing was wrong. Taking off again, there was NO power. I basically had to idle slowly to about 10 to 15 mph which at that point it would take off again. I didn't have full power though, just reduced like it was stuck in 3rd. I was able to get home. This whole time, no lights came on indicating a ground failure (i've been down that route and I KNOW how bad the grounds can be for these problems). No extra dash lights was weird. The check engine light was already on, but didn't flash. I had a catalytic converter code that was just stuck in there because i need a new O2 sensor or something.
The next day, it acted the same way. No power, "slipping", acting like it was stuck in 3rd. Then 2 hours later, I tried it again so i could get a video to go with this post and ITS FINE. I pulled the codes and I got P0700 Trans Control Sys Malfunction, and P0777 Pres Ctrl Sol. B Circuit Stuck On. I can guess what this means, but I would like to at least proceed cautiously.
My vehicle has gone from "i'm convinced it needs a transmission to" it might need a fluid change or something. I am considering having the pan dropped and filter change / new fluid via charge pipe but i'm not even sure how to ensure this is done right. I am used to fixing my own stuff, but this CVT + electronic controls worry me because I don't have the proper tools.
I'm worried about wasting money. I also have horrid distrust for any dealership, so just know that no matter what, I will never visit one of those horrible lying money pits.
*other things i am considering
1) Additional ground issues I didn't resolve correctly
2) Possible throttle body sensor issue
3) possible damaged or plugged transmission valves and circuits
Please advise.
TL;DR; CVT was slipping yesterday after a long trip, no power, no revs, no dash lights, no whine. Today its fine again. What should I have done to it to maintain it staying ok?
On the way back home, i lost power. as in, i could floor it and the jeep would not even move... the engine didn't rev. I understand how the engine works and i know the drive by wire system was simply not opening the throttle to protect the transmission. Upon coming to a stop, it shuddered HORRIBLY, banging and bucking, but not dying. Once I would come to a complete stop, it would sit like nothing was wrong. Taking off again, there was NO power. I basically had to idle slowly to about 10 to 15 mph which at that point it would take off again. I didn't have full power though, just reduced like it was stuck in 3rd. I was able to get home. This whole time, no lights came on indicating a ground failure (i've been down that route and I KNOW how bad the grounds can be for these problems). No extra dash lights was weird. The check engine light was already on, but didn't flash. I had a catalytic converter code that was just stuck in there because i need a new O2 sensor or something.
The next day, it acted the same way. No power, "slipping", acting like it was stuck in 3rd. Then 2 hours later, I tried it again so i could get a video to go with this post and ITS FINE. I pulled the codes and I got P0700 Trans Control Sys Malfunction, and P0777 Pres Ctrl Sol. B Circuit Stuck On. I can guess what this means, but I would like to at least proceed cautiously.
My vehicle has gone from "i'm convinced it needs a transmission to" it might need a fluid change or something. I am considering having the pan dropped and filter change / new fluid via charge pipe but i'm not even sure how to ensure this is done right. I am used to fixing my own stuff, but this CVT + electronic controls worry me because I don't have the proper tools.
I'm worried about wasting money. I also have horrid distrust for any dealership, so just know that no matter what, I will never visit one of those horrible lying money pits.
*other things i am considering
1) Additional ground issues I didn't resolve correctly
2) Possible throttle body sensor issue
3) possible damaged or plugged transmission valves and circuits
Please advise.
TL;DR; CVT was slipping yesterday after a long trip, no power, no revs, no dash lights, no whine. Today its fine again. What should I have done to it to maintain it staying ok?
