Sbouslog

Hi,
I searched all over and couldn't find a solution to this issue. I can accelerate fine and I can turn fine but when I do both my car has issues. I have a 1999 boxter 2.5. It sat for 5 years and I just got it going yesterday. When I turn and hit the gas (the reason you own a boxter) it feels like something is rubbing/jerking. I checked the power steering fluid levels and they are fine. I don't see any spots were the tires are rubbing. Has anyone else had this issue? I can feel it in the steering wheel so I feel like it's coming from the front. With that said, could it be the rear diff? Would a diff act differently when you are on the gas and when you aren't? I feel like that is the most logical issue.

zedcat

Are the tires on it the ones that sat for 5 years? If so that's the first thing I would suspect. Also the alignment specs. How many miles on the suspension- wheel bearings, control arms, etc?

Sbouslog

Just put new tires on it yesterday. Everything in the suspension is stock. The issue only happens when turning AND accelerating though so that kinda makes me think it can't be a front end issue.

particlewave

Turning and accelerating makes me think motor or trans mount...maybe.

Does it happen equally when turning either direction, or is it noticeably worse in one direction?

Sbouslog

Happens turning both directions. How do I check the mounts?

particlewave

You will have to get in there and inspect visually. If they show any signs of cracking or excessive wear, they need to be replaced.

Can you feel the shifter move under hard acceleration? Sometimes you will get this symptom with worn mounts.

zedcat

Some tech articles on motor and trans mounts over at pelican parts site too.

PelicanParts.com

And you don't feel anything on deceleration when turning? Fellow Boxster owners also report that they feel/hear a clunk when they come off the throttle quickly, which can be either engine or trans mount issues. As stated above, would be a good idea to check both engine and trans mounts. The engine mount is pretty straight forward. We've written a nice step-by-step, Replacing Your Motor Mount, and you'll find the replacement part here.

Try and investigate further before you dive into parts purchases but really, these are the main culprits with what you're describing. Keep us updated.

Mark/Pelican Parts

Macster

What all did you do to get the car back on the road after it sat for 5 years?

The diff it unlikely to be at fault.

As others have advised there are the engine/tranny mounts. It is worth while to check these but I don't think these are the problem based on your post.

If the symptoms appear at relatively slow speeds I'm thinking it is the normal inside front tire scrubbing that occurs when the steering is cut sharply in either direction at slow speeds.

But I can on occasion get my Boxster to generate a rapid fire stuttering from the front tires at a higher speed during a real sharp turn. The inside front tire still scrubs it just does so with smaller/more numerous events.

mikes603

Put it on jacks and take the tires off to eliminate it being a rub issue. And then you can see whats going on rather than guessing.