During acceleration rpms ramp up and stay. What is cause?
What is your question?
Sometimes during acceleration, my car may shudder. If I reduce my speed and accelerate slower it seems to be ok. But if I need to go faster, say freeway merge, the car will sometimes shudder. A couple of times I've noticed the rpms go up to 4-5000 and stay for a few seconds, at low speed- maybe 25-30 mph, and eventually changes gears, but I've usually slowed down because of the rpm noise. Again slowing down acceleration does help. I don't drive fast or very often and I don't go far. But the rpm sound scares me.
What makes this problem better or worse?
Acceleration may cause shudder. slower acceleration seems to help. Has only happened a couple of times.
How long has your 2009 Jaguar XF had this problem?
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Hello, shuddering can be a result of transmission engagement, torque converter slippage, drive shaft balance or universal joint issues -- among other causes. Since you're speaking of engine speed going high and staying a few seconds, it makes me think transmission is at least part of the conversation.
I'd have this looked at by a skilled technician near you who can give you some advice on what to do going forward.
Use this link to find some shops near you that can help with your concern:
www.repairpal.com/repair-shops
